JP2023128184A - Traffic control system, traffic control method, program - Google Patents

Abstract

To provide a traffic control system, traffic control method, and program capable of readily performing traffic control even in a case where it is hard to perform traffic control using traffic lights.SOLUTION: A traffic control system includes first acquisition means 31 that acquires vehicle information which is wirelessly transmitted from a communication unit existent in each of at least one vehicle that is at a halt in a lane within a predetermined range from a predetermined traffic regulation point and which includes information concerning at least one of a position, advancing direction, and halt period of a vehicle concerned, estimation means 32 that estimates a halt situation of the vehicle in at least one lane out of a lane identical to the lane where traffic regulation is imposed at a traffic regulation point, an opposite lane, and a cross lane on the basis of the vehicle information, signal generation means 33 that generates signal information, which is needed to perform traffic control on a vehicle in at least one lane, on the basis of the halt situation, and first transmission means 34 that wirelessly transmits the signal information to the communication unit in each vehicle.SELECTED DRAWING: Figure 4

Description

The present invention relates to a traffic control system, a traffic control method, and a program.

In order to smooth vehicle traffic, traffic control is performed using, for example, traffic lights installed at intersections or along roads. In addition, on roads where traffic lights are not installed, if traffic in one lane is restricted (prohibited) due to vehicle breakdown, accident, road construction, etc. (if alternate traffic is carried out on one side), for example, in the alternate traffic section, Traffic control of vehicles entering the alternate traffic section is carried out by temporarily installing traffic lights and deploying guides at both ends of the (traffic regulation point).

For example, in the technology described in Patent Document 1, when traffic is carried out alternately on one side due to road construction, two-position traffic lights temporarily installed at both ends of the road construction section (traffic restriction point) are used to It is designed to control vehicles entering the area.

Japanese Patent Application Publication No. 9-231497

Conventional technology requires traffic lights to be temporarily installed at both ends of a traffic restriction point, which may increase equipment costs. Furthermore, for example, if a guide is provided, not only is the cost of the guide required, but also it may become difficult to perform smooth traffic control due to the guide's mistakes or the like. Furthermore, when a vehicle breakdown or accident occurs, it may be difficult for the driver of the disabled vehicle or the accident vehicle to perform traffic control while dealing with the breakdown or accident. Furthermore, even if traffic lights are installed at intersections or along roads, if the traffic lights lose their functionality due to, for example, a power outage, it becomes difficult to control traffic using the traffic lights.

The present invention has been made in view of the above problems, and provides a traffic control system, a traffic control method, and a program that can easily perform traffic control even when it is difficult to perform traffic control using traffic lights. The purpose is to

In order to solve the above problems, the present invention first provides a traffic control system that performs traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point, A first acquisition means for acquiring vehicle information that is wirelessly transmitted from a communication device present in each vehicle and includes information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle. and estimating means for estimating the stopping status of the at least one vehicle in at least one of the same lane, the oncoming lane, and the intersecting lane as the lane whose traffic is restricted at the traffic restriction point, based on the acquired vehicle information. and a signal generating means for generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane based on the estimated stopping situation; A traffic control system is provided (invention 1), comprising: first transmitting means for wirelessly transmitting signal information to each communication device of the at least one vehicle.

According to this invention (Invention 1), based on the stopping status of a vehicle stopped in at least one of the same lane, the oncoming lane, and the intersecting lane as the lane whose traffic is restricted at a traffic restriction point, the same lane is stopped. , signal information for controlling vehicle traffic in at least one of the oncoming lane and the intersecting lane (for example, allowing the vehicle to proceed at a traffic restriction point) is generated, and the generated signal indicates that the vehicle is stopped. The signal is transmitted wirelessly to the vehicle's communication device, so the driver of the stopped vehicle can direct the vehicle to pass through a traffic restriction point (for example, an alternating traffic zone, a road construction zone, etc.) according to the signal information received by the communication device. It becomes possible to drive. This allows for cases where it is difficult to use traffic lights to control traffic, such as when traffic lights lose their functionality due to a power outage, or when a vehicle breaks down or an accident occurs on a road where no traffic lights are installed. However, traffic control for vehicles stopped on each lane can be easily performed. Furthermore, according to this invention (Invention 1), there is no need to install a large traffic signal with a light emitting device that emits light that can reach a long distance, and there is no need to deploy a traffic signal, thereby reducing the cost of the traffic signal and the need for traffic lights. Costs related to arrangement etc. can be reduced.

The invention (invention 1) may further include a second transmitting means that wirelessly transmits notification information for notifying that the traffic restriction point is established when predetermined information is input (invention 2).

According to this invention (invention 2), it becomes possible to recognize that a traffic restriction is being implemented in a communication device of a vehicle existing on a lane within a predetermined range from a traffic restriction point. Thereby, it is possible to alert the driver of the vehicle, for example, to slow down or stop the vehicle as the vehicle approaches the traffic restriction point. Further, if the vehicle is configured to be able to drive automatically, it becomes possible to control the vehicle to decelerate or stop in response to the vehicle's approach to a traffic restriction point.

In the invention (invention 2), the notification information may include information regarding the traffic regulation point (invention 3).

According to this invention (invention 3), it becomes possible to easily recognize a traffic restriction point in a communication device of a vehicle existing on a lane within a predetermined range from a traffic restriction point.

In the above invention (invention 3), the information regarding the traffic restriction point may include at least one of the latitude, longitude, and altitude of the traffic restriction point (invention 4).

According to this invention (Invention 4), in the communication device of a vehicle existing on a lane within a predetermined range from a traffic restriction point, at least one of the latitude, longitude, and altitude of the traffic restriction point can be easily recognized. It becomes possible.

In the above inventions (Inventions 1 to 4), the estimating means calculates the number and/or period of stoppage of vehicles in at least one of the same lane, oncoming lane, and intersecting lane based on the stoppage status of the vehicles. The signal generating means is configured to estimate the progress of the vehicle on any one of the lanes, when the stopped state of the vehicle in any one of the same lane, oncoming lane, and intersecting lane satisfies a predetermined condition. Signal information may be generated to permit (Invention 5).

Here, the vehicle stop period may be determined, for example, by calculating the difference between the current time and the vehicle information acquisition date and time (acquisition time), or by measuring the time that has passed since the vehicle information acquisition date and time. It may be requested by

According to this invention (Invention 5), for example, when the number and/or period of stopping of vehicles in any one of the same lane, oncoming lane, and intersecting lane satisfies predetermined conditions, Traffic control can be performed so that vehicles on one lane pass through a traffic restriction point with priority over vehicles on other lanes.

In the above invention (invention 5), the predetermined condition includes that the number of vehicles stopped on any of the lanes is greater or less than the number of vehicles stopped on the other lanes. (Invention 6).

According to this invention (Invention 6), for example, the number of vehicles stopped in any one of the same lane, the opposite lane, and the intersecting lane is greater than the number of vehicles stopped in the other lane. Alternatively, if the number of lanes is small, traffic control can be performed so that vehicles on one of the lanes pass through the traffic regulation point with priority over vehicles on other lanes.

In the above inventions (Inventions 5 and 6), the predetermined condition may include that a vehicle with the longest stop period among the at least one vehicle is stopped on any of the lanes (Invention 7). ).

According to this invention (Invention 7), for example, if a vehicle stopped in any one of the same lane, the opposite lane, and the intersecting lane has the longest period of stop, the vehicle in any of the lanes stops. Traffic can be controlled so that vehicles pass through traffic restriction points with priority over vehicles in other lanes.

In the above inventions (inventions 5 to 7), the predetermined condition is such that the average stopping period of vehicles stopped on any of the lanes is longer than the average stopping period of vehicles stopping on the other lanes. It may also be long (Invention 8).

According to this invention (Invention 8), for example, the average stopping period of a vehicle stopped in any one of the same lane, the oncoming lane, and the intersecting lane is equal to the average stopping period of a vehicle stopped in the other lane. If the time period is longer than the specified period, traffic control can be performed so that vehicles on one of the lanes pass through the traffic restriction point with priority over vehicles on other lanes.

In the above inventions (inventions 5 to 8), when a vehicle stopped in at least one of the same lane, the opposite lane, and the intersecting lane passes the traffic restriction point, communication corresponding to the passing vehicle is provided. a second acquisition means for acquiring passage information wirelessly transmitted from the device, and the estimating means reduces the number of vehicles in the lane where the passing vehicle was stopped in response to the acquisition of the passage information. (Invention 9).

According to this invention (Invention 9), the method for controlling the traffic of at least one lane based on the number of stopped vehicles (vehicle stopping status) that is reduced according to the number of vehicles that have passed through a traffic regulation point. It becomes possible to generate signal information.

In the above inventions (Inventions 1 to 9), the signal generation means may generate signal information to switch the lane in which the vehicle is allowed to proceed at every predetermined timing (Invention 10).

According to this invention (invention 10), for example, among the same lane, oncoming lane, and intersecting lane, it becomes possible to switch the lane in which the vehicle is allowed to proceed at the traffic restriction point at every predetermined timing.

In the invention (invention 10), the predetermined timing may be a timing when all vehicles stopped on the lane in which travel is permitted have passed the traffic restriction point (invention 11).

According to this invention (Invention 11), every time all vehicles stopped on lanes in which vehicles are permitted to proceed pass a traffic restriction point, the lane in which vehicles are permitted to proceed at the traffic restriction point is switched. becomes possible.

In the invention (invention 10), the predetermined timing may be a timing when a predetermined number of vehicles among the vehicles stopped on the lane in which they are allowed to proceed have passed the traffic restriction point (invention 12).

According to this invention (Invention 12), each time a predetermined number of vehicles stopped on a lane where vehicles are permitted to proceed passes a traffic restriction point, a lane in which vehicles are permitted to proceed at the traffic restriction point is changed. It becomes possible to switch.

In the above inventions (Inventions 10 to 12), the predetermined timing is a timing at which a predetermined period of time has elapsed since the vehicle on any one of the same lane, the oncoming lane, and the intersecting lane was permitted to proceed. (Invention 13).

According to this invention (Invention 13), it is possible to switch the lane in which the vehicle is allowed to proceed at the traffic restriction point every time a predetermined time elapses after the vehicle is allowed to proceed in any lane. Become.

In the above inventions (Inventions 1 to 13), at least one of the first acquisition means and the first transmission means communicates with a communication device present in each of the at least one vehicle by a wireless communication standard. Cognitive wireless communication that can be switched and communicated may be performed (invention 14).

According to this invention (Invention 14), it is possible to improve the utilization efficiency of the wireless communication band with the communication device present in each vehicle, and it is possible to expand the range of communication with the communication device. become.

In the above inventions (Inventions 1 to 14), the traffic control system may be installed in a vehicle stopped at the traffic regulation point (Invention 15).

According to this invention (invention 15), traffic control can be performed for vehicles stopped on each lane among vehicles stopped at a traffic restriction point.

In the above inventions (Inventions 1 to 14), the traffic control system may be provided at a position near the traffic regulation point (Invention 16).

According to this invention (Invention 16), traffic control for vehicles stopped on each lane is performed at a position near a traffic restriction point (for example, on a road shoulder around a vehicle stopped at a traffic restriction point). be able to.

Second, the present invention is a traffic control method in which a computer performs traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point, the computer controlling the at least one vehicle. acquiring vehicle information wirelessly transmitted from a communication device present in each vehicle, the vehicle information including information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle; and the acquired vehicle estimating a stopping situation of the at least one vehicle in at least one of the same lane, an oncoming lane, and an intersecting lane as the lane whose traffic is restricted at the traffic restriction point based on the information; and the estimated stopping situation. generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane based on the above; A traffic control method is provided, which performs the steps of wirelessly transmitting data to each of the communication devices (invention 17).

Thirdly, the present invention provides a program for causing a computer to perform traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point, the program causing the computer to perform traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point. A function for acquiring vehicle information wirelessly transmitted from a communication device present in each of the two vehicles, including information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle; a function of estimating a stoppage status of the at least one vehicle in at least one of the same lane, the oncoming lane, and the intersecting lane as the lane whose traffic is restricted at the traffic restriction point based on vehicle information; and the estimated stoppage. a function of generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane based on the situation; A program for realizing a function of wirelessly transmitting data to each communication device of a vehicle is provided (Invention 18).

According to the traffic control system, traffic control method, and program of the present invention, traffic control can be easily performed even when it is difficult to perform traffic control using traffic lights.

1 is a diagram schematically showing the basic configuration of a traffic control system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a traffic control device. FIG. 2 is a block diagram showing the configuration of a communication device. FIG. 2 is a functional block diagram for explaining functions that play a major role in the traffic control system. It is a figure which shows the example of a structure of same lane data, oncoming lane data, and intersecting lane data. It is a figure showing an example of composition of notification information. It is a flow chart which shows an example of processing of a traffic control device. 3 is a flowchart illustrating an example of processing of a communication device. FIG. 2 is a diagram illustrating an example of division of functions between a traffic control device and a traffic control server for each function of the traffic control system.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, this embodiment is an example, and the present invention is not limited thereto.

(1) Basic configuration of traffic control system FIG. 1 is a diagram schematically showing the basic configuration of a traffic control system according to an embodiment of the present invention. In addition, in this embodiment, as shown in FIG. 1, on a road where no traffic lights are installed, the first vehicle A is stopped on the lane L1 due to a breakdown or an accident, so the traffic in the lane L1 is restricted ( As an example, a case will be explained in which the traffic is prohibited (prohibited), and as a result, one-way traffic is carried out alternately.

In the traffic control system according to the present embodiment, the traffic control device 10 provided in the first vehicle A controls traffic lanes within a predetermined range from a predetermined traffic regulation point (in this embodiment, the stopping position of the first vehicle A). Traffic control is performed for at least one second vehicle B that is stopped on L1, L2, and L3. Specifically, the traffic control device 10 receives vehicle information wirelessly transmitted from a communication device 20 present in each of at least one second vehicle B, and includes vehicle information such as the position, traveling direction, and direction of the corresponding second vehicle B. The vehicle is configured to obtain vehicle information including information regarding at least one of the stop periods. In addition, based on the acquired vehicle information, the traffic control device 10 also controls a lane where traffic is restricted by one-way alternating traffic (in this case, lane L1), and at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. It is configured to estimate the stopping situation of at least one second vehicle B in the lane. Furthermore, the traffic control device 10 provides signal information for performing traffic control of at least one second vehicle B in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 based on the estimated stop situation. is configured to generate. Furthermore, the traffic control device 10 is configured to wirelessly transmit the generated signal information to the communication device 20 of each of the at least one second vehicle B.

The first vehicle A and/or the at least one second vehicle B may be, for example, a vehicle operated by a driver or a self-driving vehicle.

The traffic control device 10 may be a device (for example, a car navigation system) that can be mounted on the first vehicle A. Moreover, the traffic control device 10 may be a control device for controlling automatic driving of the first vehicle A, for example, when the first vehicle A is an automatic driving vehicle. Furthermore, the traffic control device 10 is, for example, a mobile terminal, a smartphone, a PDA (Personal Digital Assistant), a personal computer, a television receiver with a two-way communication function (including a so-called multi-function smart television), etc. The device may be carried and operated by a user (including the driver) riding in the first vehicle A, as in the example shown in FIG.

The communication device 20 may be a device (for example, a car navigation system) that can be mounted on the second vehicle B. Moreover, the communication device 20 may be a control device for controlling automatic driving of the second vehicle B, for example, when the second vehicle B is an automatic driving vehicle. Furthermore, like the traffic control device 10, the communication device 20 may be a device carried and operated by a user (including the driver) riding in the second vehicle B.

Note that each of the traffic control device 10 and the communication device 20 may be the same device or may be different devices. Further, each communication device 20 of at least one second vehicle B may be the same device. Furthermore, the communication devices 20 of some of the at least one second vehicles B may be different devices from the communication devices 20 of other second vehicles B.

(2) Configuration of traffic control device The configuration of the traffic control device 10 will be described with reference to FIG. 2. FIG. 2 is a block diagram showing the internal configuration of the traffic control device 10. As shown in FIG. 2, the traffic control device 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage device 14, and a display processing section 15. , a display section 16, an input section 17, a position measuring device 18, and a communication interface section 19, and a bus 10a for transmitting control signals or data signals between each section. In addition, in this embodiment, the case where the traffic control device 10 is provided with the storage device 14, the display processing part 15, the display part 16, and the input part 17 is demonstrated as an example, but the storage device 14, the display processing part 15, at least one of the display section 16 and the input section 17 may not be provided in the traffic control device 10.

When power is applied to the traffic control device 10, the CPU 11 loads various programs stored in the ROM 12 or the storage device 14 into the RAM 13 and executes them. In this embodiment, the CPU 11 reads out and executes a program stored in the ROM 12 or the storage device 14, thereby controlling the first acquisition means 31, estimation means 32, signal generation means 33, first transmission means 34, and The functions of the second transmitting means 35 and the second acquiring means 36 (shown in FIG. 4) are realized.

The storage device 14 is, for example, a non-volatile storage device such as a flash memory, a solid state drive (SSD), a magnetic storage device (for example, a hard disk drive (HDD), a floppy disk (registered trademark), a magnetic tape, etc.), or an optical disk. It may be a volatile storage device such as a RAM, and stores programs executed by the CPU 11 and data referenced by the CPU 11. The storage device 14 also stores same lane data, oncoming lane data, and intersecting lane data (shown in FIG. 5), which will be described later, and notification information (shown in FIG. 6).

The display processing unit 15 displays display data given from the CPU 11 on the display unit 16. The display unit 16 is, for example, an LCD (Liquid Crystal Display) monitor including thin film transistors arranged pixel by pixel in a matrix, and displays data on the display screen by driving the thin film transistors based on display data. indicate.

When the traffic control device 10 is a button input type device, the input unit 17 includes a button group including a plurality of instruction input buttons such as a direction instruction button and a decision button for accepting user operation input, and a numeric keypad, etc. It includes a button group including a plurality of instruction input buttons, and includes an interface circuit for recognizing the press (operation) input of each button and outputting it to the CPU 11.

When the traffic control device 10 is a touch panel input type device, the input unit 17 mainly receives touch panel type input by touching the display screen with a fingertip or a pen. The touch panel input method may be a known method such as a capacitive method.

Further, when the traffic control device 10 is a device capable of voice input, the input unit 17 may be configured to include a microphone for voice input, or may be configured to include a voice input via an external microphone. An interface circuit for outputting data to the CPU 11 may be provided. Furthermore, when the traffic control device 10 is a device capable of inputting moving images and/or still images, the input unit 17 may be configured to include a digital camera or a digital video camera for inputting images. , an interface circuit for receiving image data captured by an external digital camera or digital video camera and outputting it to the CPU 11 may be provided.

The position measuring device 18 is a device that measures the position (for example, at least one of latitude, longitude, and altitude) of the traffic control device 10 using a position measuring technique such as GPS (Global Positioning System). The position measuring device 18 may measure the position of the traffic control device 10 every time a predetermined period of time (for example, 1 second, etc.) elapses.

The communication interface unit 19 includes an interface circuit for performing wireless communication with other devices (for example, each communication device 20 of at least one second vehicle B).

(3) Configuration of communication device The configuration of the communication device 20 will be described with reference to FIG. 3. FIG. 3 is a block diagram showing the internal configuration of the communication device 20. As shown in FIG. As shown in FIG. 3, the communication device 20 includes a CPU 21, a ROM 22, a RAM 23, a storage device 24, a display processing section 25, a display section 26, an input section 27, a position measuring device 28, and a communication interface. A bus 20a is provided for transmitting control signals or data signals between the respective sections. In addition, in this embodiment, the case where the communication device 20 is provided with the storage device 24, the display processing section 25, the display section 26, and the input section 27 is described as an example, but the storage device 24, the display processing section 25 , the display section 26, and the input section 27 may not be provided in the communication device 20.

When power is applied to the communication device 20, the CPU 21 loads various programs stored in the ROM 22 or the storage device 24 into the RAM 23 and executes them.

The storage device 24 may be a nonvolatile storage device such as a flash memory, an SSD, a magnetic storage device (for example, an HDD, a floppy disk (registered trademark), a magnetic tape, etc.), an optical disk, or a volatile storage device such as a RAM. It may be a physical storage device, and stores programs executed by the CPU 21 and data referenced by the CPU 21.

The position measuring device 28 is a device that measures the position (for example, at least one of latitude, longitude, and altitude) of the communication device 20 using a position measuring technique such as GPS. The position measuring device 28 may measure the position of the communication device 20 every time a predetermined period of time (eg, 1 second, etc.) elapses.

The communication interface unit 29 includes an interface circuit for performing wireless communication with another device (for example, the traffic control device 10 of the first vehicle A).

The details of other units in the communication device 20 (here, the display processing unit 25, the display unit 26, and the input unit 27) may be the same as those in the traffic control device 10.

(4) Overview of each function in the traffic control system The functions realized by the traffic control system of this embodiment will be explained with reference to FIG. 4. FIG. 4 is a functional block diagram for explaining functions that play a major role in the traffic control system of this embodiment. In the functional block diagram of FIG. 4, the first acquisition means 31, the estimation means 32, the signal generation means 33, and the first transmission means 34 correspond to the main components of the traffic control system of the present invention. Although the other means (second transmitting means 35 and second acquiring means 36) are not necessarily essential, they are constituent elements for making the present invention even more preferable.

The first acquisition means 31 is vehicle information that is wirelessly transmitted from the communication device 20 present in each of the at least one second vehicle B, and includes at least one of the position, traveling direction, and stop period of the corresponding second vehicle B. It has a function to acquire vehicle information including information regarding one vehicle.

The functions of the first acquisition means 31 are realized, for example, as follows. First, each time the position of the communication device 20 is measured by the position measuring device 28 while the second vehicle B is running or stopped, the CPU 21 of the communication device 20 of each of the at least one second vehicle B executes the CPU 21 of the communication device 20 of the at least one second vehicle B. Information regarding the location of is stored in the storage device 24. Further, in the present embodiment, the CPU 21 of the communication device 20 receives notification information, which will be described later, from the traffic control device 10 of the first vehicle A via the communication interface unit 29, and then the CPU 21 of the communication device 20 receives notification information when the second vehicle B is at a traffic restriction point (the If it is determined that the second vehicle A has arrived and stopped (for example, the position of the second vehicle B measured by the position measuring device 28 is within a predetermined range (for example, several meters to several tens of meters) from the traffic restriction point) The identification information (communication device ID) of the communication device 20 and the vehicle information of the corresponding second vehicle B (in this embodiment Then, the information (including the position, traveling direction, and stop period of the corresponding second vehicle B) is transmitted to the traffic control device 10 of the first vehicle A via the communication interface unit 29.

Here, the position of the second vehicle B may be, for example, the latest position of the second vehicle B measured by the position measuring device 28 (that is, the stopping position of the second vehicle B), or the position of the second vehicle The information may be information representing the transition of the position of the second vehicle B within a predetermined period until the second vehicle B stops (that is, the movement route within the predetermined period until the second vehicle B stops). Further, the traveling direction of the second vehicle B is the moving direction of the second vehicle B during a predetermined period (for example, 10 seconds, etc.) immediately before the second vehicle B arrives at the traffic restriction point (the position of the second vehicle changes). direction) may also be used. Note that the traveling direction of the second vehicle B may be expressed using any one of 4 directions, 8 directions, 16 directions, and 32 directions, for example. Furthermore, the stop period of the second vehicle B may be the elapsed period after the second vehicle B starts stopping within a predetermined range (for example, a range of several meters to several tens of meters) from the traffic restriction point. . Note that the vehicle information of the second vehicle B includes information indicating that the second vehicle B is within a predetermined range (for example, several meters) from the traffic regulation point, together with or instead of the stop period of the second vehicle B. It may also include the arrival time when arriving within a range of several tens of meters).

In addition, in this embodiment, the case where the stop period of the second vehicle B is included in the vehicle information is described as an example, but the stop period of the second vehicle B does not need to be included in the vehicle information. . In this case, the CPU 11 of the traffic control device 10 may determine the stop period of the second vehicle B based on the date and time when vehicle information was acquired from the second vehicle B (“vehicle information acquisition date and time” to be described later). Specifically, the CPU 11 of the traffic control device 10 calculates the stop period of the corresponding second vehicle B by calculating the difference between the current time and the vehicle information acquisition date and time (acquisition time). Alternatively, the stop period of the corresponding second vehicle B may be determined by measuring the time that has passed since the acquisition date and time of the vehicle information.

On the other hand, when the CPU 11 of the traffic control device 10 of the first vehicle A receives (acquires) vehicle information from each of the at least one second vehicle B via the communication interface section 19, the CPU 11 of the traffic control device 10 of the first vehicle A acquires at least one vehicle information based on the received vehicle information. The lane in which each of the one second vehicles B is stopped is determined. Specifically, the CPU 11 of the traffic control device 10 selects, for example, a second vehicle B whose traveling direction included in the vehicle information is the same as the traveling direction of the first vehicle A, out of at least one second vehicle B. may be determined to be the second vehicle B, which is stopped in the same lane L1 as the first vehicle A. Here, the traveling direction of the first vehicle A is, similarly to the second vehicle B, the traveling direction of the first vehicle A during a predetermined period (for example, 10 seconds, etc.) immediately before the first vehicle A arrives at the traffic restriction point. (The direction in which the position of the first vehicle measured by the position measuring device 28 changes) may be information. Note that the traveling direction of the first vehicle A may be expressed using the same orientation as the traveling direction of the second vehicle B, for example, among 4 directions, 8 directions, 16 directions, and 32 directions. Further, the CPU 11 of the traffic control device 10 selects a second vehicle B whose traveling direction included in the vehicle information is opposite to the traveling direction of the first vehicle A, out of at least one second vehicle B, to the first vehicle A. It may be determined that the second vehicle B is stopped in the oncoming lane L2. Further, the CPU 11 of the traffic control device 10 selects a second vehicle B whose traveling direction included in the vehicle information is neither the same direction nor the opposite direction as the traveling direction of the first vehicle A, among the at least one second vehicle B. It may be determined that the second vehicle B is stopped in the intersecting lane L3 of the first vehicle A.

In the above example, the CPU 11 of the traffic control device 10 determines the lane in which the second vehicle B exists by comparing the traveling direction of the second vehicle B and the traveling direction of the first vehicle A. . Here, for example, if the first vehicle A is not present at the traffic restriction point, or if the first vehicle A spins, it stops at the traffic restriction point facing in a direction different from the original direction of travel. When it is difficult to determine the lane in which the second vehicle B exists by comparing it with the traveling direction of the first vehicle A, the CPU 11 of the traffic control device 10, for example, The lane in which the second vehicle B is present may be determined by associating each traveling direction of the second vehicle B with one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. Further, the CPU 11 of the traffic control device 10 may, for example, use an arbitrarily selected second vehicle B out of the at least one second vehicle B instead of the first vehicle A to control the progress of the selected second vehicle B. By comparing the direction with the traveling directions of other second vehicles B, the lane in which each second vehicle B exists may be determined.

Note that, when the vehicle information includes a travel route within a predetermined period until the second vehicle B stops, the CPU 11 of the traffic control device 10 performs a process based on the travel route until the second vehicle B stops. , the lane in which each of the at least one second vehicle B is stopped may be determined. Specifically, the CPU 11 of the traffic control device 10 determines, for example, that among at least one second vehicle B, the travel route included in the vehicle information is the travel route of the first vehicle A (measured by the position measuring device 18). A second vehicle B that is in the same direction as the first vehicle A (temporal change in position) may be determined as a second vehicle B that is stopped in the same lane L1 as the first vehicle A. Further, the CPU 11 of the traffic control device 10 selects a second vehicle B, whose travel route included in the vehicle information is in the opposite direction to the travel route of the first vehicle A, out of the at least one second vehicle B, from the first vehicle A. It may be determined that the second vehicle B is stopped in the oncoming lane L2. Furthermore, the CPU 11 of the traffic control device 10 selects a second vehicle B, of the at least one second vehicle B, whose travel route included in the vehicle information is neither in the same direction nor in the opposite direction to the travel route of the first vehicle A. It may be determined that the second vehicle B is stopped in the intersecting lane L3 of the first vehicle A.

Further, when the CPU 11 of the traffic control device 10 determines the lane in which each of the at least one second vehicle B is stopped, the CPU 11 stores vehicle information of each of the at least one second vehicle B in the same lane as shown in FIG. Among the data, oncoming lane data, and intersecting lane data, the lane data corresponding to the lane in which it is determined that the second vehicle B is stopped is stored. Here, each of the same lane data, oncoming lane data, and intersecting lane data includes vehicle information (vehicle position, traveling direction, and stop period (or , arrival time)) and the acquisition date and time of the vehicle information are described in a state in which they are associated with each other. Here, the vehicle information acquisition date and time may be information representing the date and time when the CPU 11 of the traffic control device 10 acquires the vehicle information from the communication device 20. That is, the CPU 11 of the traffic control device 10 stores the vehicle information of the second vehicle determined to be stopped in the same lane L1 among the at least one second vehicle B in the same lane data, and Vehicle information of a second vehicle determined to be stopped in the oncoming lane L2 among the vehicles B is stored in oncoming lane data, and vehicle information of a second vehicle determined to be stopped in the intersecting lane L3 among at least one second vehicle B is determined to be stopped in the intersecting lane L3. The vehicle information of the second vehicle is stored in intersecting lane data.

In this way, the CPU 11 of the traffic control device 10 receives (acquires) vehicle information wirelessly transmitted from the communication device 20 present in each of the at least one second vehicle B.

Based on the acquired vehicle information, the estimating means 32 determines whether at least one second vehicle B is in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 as the lane where traffic is restricted at the traffic restriction point. Equipped with a function to estimate stoppage status. Here, the estimating means 32 determines the number and/or stopping period of the second vehicles B that are stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 as the stopping status of the second vehicles B. It may be estimated. Note that the stop period of the second vehicle B may be determined, for example, by calculating the difference between the current time and the acquisition date and time of the vehicle information (acquisition time), or by calculating the time that has passed since the acquisition date and time of the vehicle information. It may also be determined by measurement.

The function of the estimating means 32 is realized, for example, as follows. Based on the function of the first acquisition means 31, the CPU 11 of the traffic control device 10 stores the vehicle information of each of the at least one second vehicle B in any of the same lane data, oncoming lane data, and intersecting lane data. Then, access each of the same lane data, oncoming lane data, and intersecting lane data to measure the number of stored vehicle information (i.e., the number of second vehicles B stopped on the corresponding lane). It's okay. Thereby, the CPU 11 of the traffic control device 10 can estimate the stopping status of the second vehicles B (the number of stopped second vehicles B) in each of the same lane L1, the oncoming lane L2, and the intersecting lane L3. I can do it.

The CPU 11 of the traffic control device 10 may also access each of the same lane data, oncoming lane data, and intersecting lane data to obtain the corresponding stop period of the second vehicle B for each stored vehicle information. good. In this case, the CPU 11 may determine the stop period of the corresponding second vehicle B by calculating the difference between the current time and the acquisition date and time of the vehicle information (acquisition time), or the acquisition date and time of the vehicle information. The corresponding stop period of the second vehicle B may be determined by measuring the elapsed time from the time. As a result, the CPU 11 of the traffic control device 10 determines the stopping status of the second vehicle B in each of the same lane L1, the oncoming lane L2, and the intersecting lane L3 (the stopping period of each stopped second vehicle B). It can be estimated.

In the example described above, the estimating means 32 calculates the number and/or period of stoppage of the second vehicles B that are stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. Although this is assumed as a situation, the present invention is not limited to this case. For example, the estimating means 32 calculates the order from the head of the stopped vehicle convoy of the second vehicle B stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3, and the stoppage of the second vehicle B. The period may be estimated as the stopping situation of the second vehicle B. In this case, the CPU 11 of the traffic control device 10 accesses each of the same lane data, oncoming lane data, and intersecting lane data, and determines whether the corresponding second vehicle B is at the head of the stopped vehicle line for each stored vehicle information. You can also ask for the order starting from. Here, the CPU 11 assigns, for example, a number (order) starting from 1 in the order in which the vehicle position included in the vehicle information is closest to the position of the traffic control device 10 (which may be measured by the position measuring device 18). It may be allocated to two vehicles B. Further, the CPU 11 may, for example, assign a number (order) starting from 1 to the corresponding second vehicle B in the order of the oldest arrival time included in the vehicle information (that is, the order of arrival at the traffic regulation point). .

The signal generation means 33 generates signal information for performing traffic control of at least one second vehicle B in at least one lane among the same lane L1, the oncoming lane L2, and the intersecting lane L3, based on the estimated stopping situation. It has the function to

In addition, the signal generating means 33 generates a second vehicle B on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 when the stopped state of the second vehicle B satisfies a predetermined condition. Signal information may be generated to allow the two vehicles B to proceed. As a result, for example, when the number of second vehicles B that are stopped in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 satisfies a predetermined condition, the second vehicle B on any of the lanes Traffic control can be performed so that the second vehicle B passes through the traffic restriction point with priority over the second vehicle B on the other lane.

Here, the predetermined condition may include that the number of second vehicles B stopped on any lane is greater or less than the number of second vehicles B stopped on the other lane. . As a result, for example, the number of second vehicles B that are stopped in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 is greater than the number of second vehicles B that are stopped on the other lane. traffic control can be performed so that the second vehicle B on one of the lanes passes through the traffic restriction point with priority over the second vehicle B on the other lane.

Further, the predetermined condition may include that the second vehicle B, which has the longest stop period among at least one second vehicle B, is stopped on any lane. As a result, for example, if the second vehicle B stopped in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 has the longest stopping period, the second vehicle B on any of the lanes Traffic control can be performed so that vehicle B passes through the traffic restriction point with priority over second vehicle B on another lane.

Furthermore, the predetermined condition may include that the average stopping period of the second vehicle B stopped on any lane is longer than the average stopping period of the second vehicle B stopping on the other lane. good. As a result, for example, the average stopping period of the second vehicle B that is stopped in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 is the same as that of the second vehicle B that is stopped on the other lane. When the stop period is longer than the average stop period, traffic control can be performed so that the second vehicle B on any of the lanes passes through the traffic regulation point with priority over the second vehicle B on the other lanes.

Furthermore, the signal generation means 33 may generate signal information so as to switch the lane in which the second vehicle B is allowed to proceed at every predetermined timing. Thereby, for example, it becomes possible to switch at predetermined timing the lane in which the second vehicle B is allowed to proceed at the traffic restriction point among the same lane L1, the oncoming lane L2, and the intersecting lane L3.

Here, the predetermined timing may be the timing when all the second vehicles B stopped on the lane in which travel is permitted have passed the traffic restriction point. As a result, every time all the second vehicles B that are stopped on the lane where the second vehicle B is permitted to proceed pass the traffic restriction point, the lane in which the second vehicle B is permitted to proceed at the traffic restriction point is created. It becomes possible to switch.

Further, the predetermined timing may be a timing when a predetermined number of second vehicles B among the second vehicles B stopped on the lane in which travel is permitted has passed a traffic restriction point. As a result, every time a predetermined number of second vehicles B that are stopped on the lane where the second vehicle B is permitted to proceed pass the traffic restriction point, the second vehicle B is permitted to proceed at the traffic restriction point. It will be possible to switch lanes.

Further, the predetermined timing may be a timing at which a predetermined time has elapsed after the second vehicle B was allowed to proceed on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. This makes it possible to switch the lane in which the second vehicle B is allowed to proceed at the traffic restriction point every time a predetermined period of time elapses after the second vehicle B is allowed to proceed in any lane. .

The function of the signal generation means 33 is realized, for example, as follows. Note that, here, the signal generating means 33 is configured to detect a stop condition of the second vehicle B in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 when the stopped state of the second vehicle B satisfies a predetermined condition. A case will be described as an example in which signal information is generated to allow the second vehicle B to proceed on the line.

For example, if the predetermined condition includes that the number of second vehicles B stopped on any lane is greater or less than the number of second vehicles B stopped on other lanes, , the CPU 11 of the traffic control device 10 extracts lane data (for example, oncoming lane data) with the largest or smallest number of stored vehicle information among the same lane data, oncoming lane data, and intersecting lane data. Then, the CPU 11 of the traffic control device 10 transmits signal information (for example, a green light) to permit the second vehicle B to proceed, which corresponds to the vehicle information stored in the extracted lane data (here, oncoming lane data). (information indicating that there is) is generated. For example, the CPU 11 of the traffic control device 10 allows the second vehicle B to proceed based on the identification information (communication device ID) of all the communication devices 20 in the extracted lane data (here, oncoming lane data). The generated signal information (for example, information indicating that the light is green) is associated with the green light. Further, the CPU 11 of the traffic control device 10 sends a signal to stop the movement of the second vehicle B corresponding to the vehicle information stored in the unextracted lane data (here, same lane data and intersecting lane data). Generate information (for example, information indicating a red light). For example, the CPU 11 of the traffic control device 10 identifies the second vehicle traffic light information (for example, information indicating a red light) generated to stop the progress of the traffic light. Note that the signal information may be composed of audio data or image data.

As a result, the number of second vehicles B that are stopped on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 is greater than the number of second vehicles B that are stopped on the other lane. If the number of stopped vehicles on any lane is the longest (that is, when the line of stopped vehicles on any lane is the longest), in order to alleviate the congestion on that lane, the second vehicle It will be possible to give priority to traffic. On the other hand, the number of second vehicles B stopped on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 is smaller than the number of second vehicles B stopped on the other lane. (in other words, when the line of stopped vehicles on either lane is the shortest), in order to quickly resolve the congestion on that lane, the second vehicle on that lane is It becomes possible to give priority to B and allow it to pass.

Further, for example, if the predetermined condition includes that the second vehicle B having the longest stopping period among at least one second vehicle B is stopped on any lane, the traffic control device 10 The CPU 11 extracts lane data (for example, oncoming lane data) that includes vehicle information with the longest stopping period (or longest elapsed time from arrival time) from among the same lane data, oncoming lane data, and intersecting lane data. do. Then, the CPU 11 of the traffic control device 10 transmits signal information (for example, a green light) to permit the second vehicle B to proceed, which corresponds to the vehicle information stored in the extracted lane data (here, oncoming lane data). information indicating that there is) may also be generated. Further, the CPU 11 of the traffic control device 10 sends a signal to stop the movement of the second vehicle B corresponding to the vehicle information stored in the unextracted lane data (here, same lane data and intersecting lane data). Information (for example, information indicating a red light) may be generated.

Furthermore, for example, the predetermined condition may be that the average stopping period of the second vehicle B stopped on any lane is longer than the average stopping period of the second vehicle B stopping on the other lane. If included, the CPU 11 of the traffic control device 10 calculates the average period of stop periods of all stored vehicle information for each of the same lane data, oncoming lane data, and intersecting lane data. Then, the CPU 11 of the traffic control device 10 determines that among the same lane data, oncoming lane data, and intersecting lane data, the average period of stop periods of all stored vehicle information is the longest (or the elapsed time from the arrival time Extract lane data (for example, oncoming lane data) with the longest average. Then, the CPU 11 of the traffic control device 10 transmits signal information (for example, a green light) to permit the second vehicle B to proceed, which corresponds to the vehicle information stored in the extracted lane data (here, oncoming lane data). information indicating that there is) may also be generated. Further, the CPU 11 of the traffic control device 10 sends a signal to stop the movement of the second vehicle B corresponding to the vehicle information stored in the unextracted lane data (here, same lane data and intersecting lane data). Information (for example, information indicating a red light) may be generated.

Next, a case will be described in which signal information is generated to switch the lane in which the second vehicle B is allowed to proceed at every predetermined timing.

For example, if the predetermined timing is the timing when all the second vehicles B stopped on the lane in which they are allowed to proceed have passed a traffic restriction point, the CPU 11 of the traffic control device 10 The number of passage information received (acquired) from the second vehicle B based on the function of the second acquisition means 36 (i.e., the number of second vehicles B that have passed through the traffic restriction point) corresponds to the lane in which travel is permitted. Every time the number of vehicle information stored in the lane data (for example, oncoming lane data) reaches the number (that is, the number of second vehicles B that are stopped on the lane that is allowed to proceed (for example, oncoming lane L2)) Alternatively, signal information may be generated to permit the second vehicle B to proceed in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. Further, the CPU 11 of the traffic control device 10 is configured to reduce the number of second vehicles B in the lane where the second vehicle B that passed the traffic restriction point was stopped, based on the function of the estimation means 32 described later. If all the vehicle information stored in the lane data (for example, oncoming lane data) corresponding to the lane in which proceeding is permitted is deleted from the lane data, the same lane L1, the oncoming lane The signal information may be generated so as to permit the second vehicle B to proceed in either lane L2 or intersecting lane L3.

Further, for example, if the predetermined timing is the timing when a predetermined number (for example, 10) of the second vehicles B stopped on the lane in which they are allowed to proceed have passed a traffic restriction point. , the CPU 11 of the traffic control device 10 calculates the number of passage information received (acquired) from the second vehicles B based on the function of the second acquisition means 36 (described later) (i.e., the number of second vehicles B that have passed through the traffic regulation point). ) may reach a predetermined number, signal information may be generated to permit the second vehicle B to proceed in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3.

Furthermore, for example, at a predetermined timing, a predetermined time (for example, 30 seconds) has elapsed since the second vehicle B was allowed to proceed on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. In the case of the timing, the CPU 11 of the traffic control device 10 generates the elapsed time from the time when the signal information is generated every time it generates the signal information to permit the second vehicle B to proceed on any lane. Measure. Then, when the elapsed time reaches a predetermined time, the CPU 11 of the traffic control device 10 allows the second vehicle B to proceed in any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. Signal information may also be generated.

Note that, as a function of the signal generation means 33, the CPU 11 of the traffic control device 10 detects the head of the stopped vehicle convoy of the second vehicle B that is stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. signal information for performing traffic control of at least one second vehicle B in at least one lane among the same lane L1, the oncoming lane L2, and the intersecting lane L3, based on the order from may be generated. Here, it is generally expected that the closer the position of the second vehicle B is to the end of the stopped vehicle convoy, the longer it will take for the second vehicle B to pass the traffic restriction point. Even if the stop period of vehicle B becomes somewhat longer, it is thought that the dissatisfaction of the passengers of the second vehicle B can be suppressed. On the other hand, it is expected that the closer the position of the second vehicle B is to the head of the stopped vehicle convoy, the shorter the period until the second vehicle B passes the traffic restriction point. If it becomes somewhat longer, it is thought that the dissatisfaction of the passengers of the second vehicle B will increase. Therefore, the CPU 11 of the traffic control device 10 determines the order from the head of the stopped vehicle convoy of the second vehicle B stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3, and Based on the stop period of the vehicle B, signal information may be generated to permit the second vehicle B to proceed on any one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. For example, the CPU 11 accesses each of the same lane data, oncoming lane data, and intersecting lane data, and determines which of the at least one second vehicle B is closer to the head of the stopped vehicle convoy and has a longer stopped period. Vehicle information corresponding to the second vehicle B is extracted. Then, the CPU 11 identifies lane data (for example, oncoming lane data) including the extracted vehicle information, and selects a second vehicle B corresponding to the vehicle information stored in the identified lane data (here, oncoming lane data). Traffic light information (for example, information indicating that the traffic light is green) may be generated to allow the vehicle to proceed.

The first transmitting means 34 has a function of wirelessly transmitting the generated signal information to each communication device 20 of at least one second vehicle B.

The functions of the first transmitting means 34 are realized, for example, as follows. The CPU 11 of the traffic control device 10 transmits signal information to each of the communication devices 20 whose identification information (communication device ID) is stored in any of the same lane data, oncoming lane data, and intersecting lane data. It is transmitted via the communication interface section 19 in a state in which identification information (communication device ID) is associated with it.

On the other hand, when the CPU 21 of each communication device 20 of at least one second vehicle B receives signal information associated with its own identification information (communication device ID) via the communication interface unit 29, the CPU 21 of the communication device 20 of each of the at least one second vehicle B The information may be displayed on the display section 26, for example. Thereby, the driver of the second vehicle B can easily determine whether or not the vehicle can proceed through the traffic restriction point. Further, when the second vehicle B is an automatically driven vehicle, whether or not the second vehicle B is caused to proceed may be controlled depending on the content of the signal information received by the communication device 20.

The second transmitting means 35 has a function of wirelessly transmitting notification information for notifying that a traffic restriction point is provided when predetermined information is input. This makes it possible for the communication device 20 of the second vehicle B, which is present on the lane within a predetermined range from the traffic restriction point, to recognize that the traffic restriction is being implemented. Thereby, the driver of the second vehicle B can be alerted to, for example, decelerating or stopping the second vehicle B in response to the approach of the second vehicle B to the traffic restriction point. In addition, if the second vehicle B is configured to be able to drive automatically, the second vehicle B may be controlled to decelerate or stop in response to the approach of the second vehicle B to the traffic restriction point. becomes possible.

Here, the notification information may include information regarding traffic restriction points. This makes it possible for the communication device 20 of the second vehicle B, which is present on the lane within a predetermined range from the traffic restriction point in one-way alternate traffic, to easily recognize the traffic restriction point.

Further, the information regarding the traffic restriction point may include at least one of the latitude, longitude, and altitude of the traffic restriction point. This makes it possible for the communication device 20 of the second vehicle B, which is present on the lane within a predetermined range from the traffic restriction point, to easily recognize at least one of the latitude, longitude, and altitude of the traffic restriction point. .

The functions of the second transmitting means 35 are realized, for example, as follows. For example, when the first vehicle A is stopped at a traffic regulation point, when predetermined information is input using the input unit 17, the CPU 11 of the traffic control device 10 generates the notification information shown in FIG. 6, for example. do. Then, the CPU 11 of the traffic control device 10 broadcasts (transmits) the generated notification information via the communication interface unit 19. Here, the notification information is information in which identification information of the traffic control device 10 (traffic control device ID) and a traffic control point (latitude, longitude, and altitude) are associated with each other. When predetermined information is input using the input unit 17, the CPU 11 of the traffic control device 10 instructs the position measuring device 18 to measure the position, and calculates the position of the traffic control device 10 measured by the position measuring device 18. Information (latitude, longitude, and altitude) may be stored in the traffic restriction point of the notification information. Further, the notification information may include other information (for example, the reason for traffic restriction, notification date and time, etc.). For example, when the traffic restriction reason is included in the notification information, the CPU 11 of the traffic control device 10 transmits the traffic restriction reason input using the input unit 17 (e.g., vehicle failure, accident, disaster, road construction, falling rock, Obstacles, etc.) may be stored as the traffic restriction reason in the notification information, or for example, the traffic restriction reason selected from the plurality of traffic restriction reasons displayed on the display unit 16 etc. using the input unit 17 may be notified. The information may be stored in the reason for traffic restriction. Note that the notification information may be composed of audio data or image data.

When the second vehicle B, which is stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3, passes through a traffic restriction point, the second acquisition means 36 is configured to acquire information on the passing second vehicle B. It has a function of acquiring passage information wirelessly transmitted from the corresponding communication device 20.

The functions of the second acquisition means 36 are realized, for example, as follows. First, when the CPU 21 of each communication device 20 of at least one second vehicle B determines that the second vehicle B has passed a traffic restriction point, the CPU 21 generates passage information including identification information (communication device ID) of the communication device 20. is generated and the passage information is transmitted to the traffic control device 10 via the communication interface section 29. Here, the CPU 21 of the communication device 20 determines that the distance between the position of the communication device 20 measured by the position measuring device 28 and the traffic regulation point included in the notification information received from the traffic control device 10 is a predetermined value (for example, , 5 m) or less, it may be determined that the second vehicle B has passed through the traffic restriction point.

On the other hand, when the CPU 11 of the traffic control device 10 receives (acquires) the passage information from the communication device 20 via the communication interface unit 19, it may store the received passage information in the RAM 13, for example. In this way, the CPU 11 of the traffic control device 10 can acquire passage information wirelessly transmitted from the communication device 20 corresponding to the second vehicle B that has passed through the traffic restriction point.

Here, the estimating means 32 may reduce the number of second vehicles B in the lane where the second vehicle B that passed the traffic restriction point was stopped, in response to the acquisition of the passing information. As a result, a signal for controlling traffic in at least one lane is generated based on the number of stopped vehicles (stopping status of second vehicles B), which is reduced according to the number of second vehicles B that have passed through the traffic regulation point. It becomes possible to generate information.

The function of the estimating means 32 in this case is realized, for example, as follows. When the CPU 11 of the traffic control device 10 acquires the passage information based on the function of the second acquisition means 36, the CPU 11 identifies the communication device 20 included in the passage information among the same lane data, oncoming lane data, and intersecting lane data. Extract lane data that stores information (communication device ID). Then, the CPU 11 of the traffic control device 10 extracts the identification information (communication device ID) of the communication device 20 included in the passage information, and the vehicle information and acquisition date and time corresponding to the identification information (communication device ID). The extracted lane data is updated by deleting the extracted lane data. This makes it possible to reduce by one the number of second vehicles B in the lane where the second vehicle B, which has passed through the traffic restriction point, was stopped.

In addition, in this embodiment, at least one of the first acquisition means 31, the first transmission means 34, the second transmission means 35, and the second acquisition means 36 communicates with each other in at least one second vehicle B. Cognitive wireless communication may be performed with the device 20 by switching the wireless communication standard. This makes it possible to improve the utilization efficiency of the wireless communication band between the traffic control device 10 and the communication device 20 present in each second vehicle B, and to increase the communication range with the communication device 20. It becomes possible to expand.

Here, cognitive wireless communication is a technology for switching the wireless method to be used by selecting the optimal communication method according to the situation from among a plurality of communication methods. Communication methods used in cognitive wireless communication include, for example, LPWA (Low Power Wide Area) (920MHz), IEEE. 802.11n (2.4GHz), IEEE. 802.11ac (5.6GHz), IEEE. Examples include communication methods that do not require a license, such as 802.11ad (60 GHz).

In this case, the CPU 11 of the traffic control device 10 and the CPU 21 of each of the communication devices 20 of at least one second vehicle B may decide the communication method depending on the amount of information transmitted and received from each other. For example, a lower frequency communication method may be used as the amount of information to be transmitted and received is smaller, and a higher frequency communication method may be used as the amount of information to be transmitted and received is larger.

(5) Flow of main processing of the traffic control system of this embodiment Next, an example of the flow of main processing performed by the traffic control system of this embodiment will be explained with reference to the flowcharts of FIGS. 7 and 8. do.

First, an example of the processing of the traffic control device 10 will be described with reference to FIG. For example, when the first vehicle A is stopped at a traffic regulation point, the CPU 11 of the traffic control device 10 present in the first vehicle A receives notification information when predetermined information is input using the input unit 17. generate. Then, the CPU 11 of the traffic control device 10 broadcasts (transmits) the generated notification information via the communication interface unit 19 (step S100).

On the other hand, after receiving the notification information from the traffic control device 10 of the first vehicle A via the communication interface section 29, the CPU 21 of each communication device 20 of at least one second vehicle B controls the traffic control of the second vehicle B. If it is determined that the second vehicle B has arrived and stopped at a point (the stopping position of the first vehicle A) (for example, the position of the second vehicle B measured by the position measuring device 28 is within a predetermined range (for example, several meters) from the traffic restriction point) ... within a range of several tens of meters) for a predetermined period of time (for example, 5 minutes, etc.)), the identification information (communication device ID) of the communication device 20 and the corresponding vehicle information ( In this embodiment, the information (including the position, traveling direction, and stop period of the corresponding second vehicle B) is transmitted to the traffic control device 10 of the first vehicle A via the communication interface unit 29.

Next, when the CPU 11 of the traffic control device 10 receives (acquires) the vehicle information from each of the at least one second vehicle B via the communication interface unit 19 (step S102: YES), the CPU 11 receives the vehicle information based on the acquired vehicle information. , the stopping situation of at least one second vehicle B in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 as the lane where traffic is restricted by one-sided traffic is estimated (step S104). Note that if the CPU 11 of the traffic control device 10 has not received (acquired) vehicle information (step S102: NO), it may proceed to the process of step S106, which will be described later.

When the second vehicle B that is stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3 passes through a traffic restriction point, the CPU 11 of the traffic control device 10 controls the CPU 11 of the traffic control device 10 to detect the passing second vehicle B when the second vehicle B is stopped in at least one of the same lane L1, the oncoming lane L2, and the intersecting lane L3. When the passage information wirelessly transmitted from the communication device 20 corresponding to the traffic restriction point is acquired (step S106: YES), the lane in which the second vehicle B, which passed through the traffic restriction point, was stopped is determined according to the acquisition of the passage information. The lane data is updated to reduce the number of second vehicles B in (step S108). Specifically, when the CPU 11 of the traffic control device 10 acquires the passing information, the CPU 11 selects the identification information ( The lane data that stores the communication device ID) is extracted. Then, the CPU 11 of the traffic control device 10 extracts the identification information (communication device ID) of the communication device 20 included in the passage information, and the vehicle information and acquisition date and time corresponding to the identification information (communication device ID). The extracted lane data is updated by deleting the extracted lane data. Note that when the CPU 11 of the traffic control device 10 has not acquired the passing information (step S106: NO), the CPU 11 may proceed to the process of step S110, which will be described later.

After step S108, the CPU 11 of the traffic control device 10 determines the timing for generating signal information (for example, the timing when a predetermined number or all of the second vehicles B on any lane have passed a traffic restriction point, and/or It is determined whether or not a predetermined period of time has elapsed since the second vehicle B was allowed to proceed on any lane (step S110). Then, when the CPU 11 of the traffic control device 10 determines that it is the timing to generate signal information (step S110: YES), the CPU 11 of the traffic control device 10 uses the same Signal information for performing traffic control of at least one second vehicle B in at least one of lane L1, oncoming lane L2, and intersecting lane L3 is generated (step S112). Next, the CPU 11 of the traffic control device 10 wirelessly transmits the generated signal information to each communication device 20 of the at least one second vehicle B (step S114). Furthermore, when the CPU 11 of the traffic control device 10 determines that it is not the timing to generate signal information (step S110: NO), the CPU 11 may proceed to the process of step S114.

After step S114, the CPU 11 of the traffic control device 10 may proceed to the process of step S100.

Next, an example of processing of the communication device 20 will be described with reference to FIG. The CPU 21 of each communication device 20 of at least one second vehicle B receives the notification information from the traffic control device 10 of the first vehicle A via the communication interface unit 29 (step S200: YES), and If it is determined that the second vehicle B has arrived at and stopped at a traffic restriction point (the stopping position of the first vehicle A) (for example, if the position of the second vehicle B measured by the position measuring device 28 is within a predetermined range from the traffic restriction point (for example, , within a range of several meters to several tens of meters) for a predetermined period of time (for example, 5 minutes, etc.) (step S202: YES), the identification information of the communication device 20 (communication device ID) and the corresponding The vehicle information of the second vehicle B (in this embodiment, including the position, traveling direction, and stop period of the corresponding second vehicle B) is sent to the traffic control device 10 of the first vehicle A via the communication interface unit 29. (step S204). Note that the CPU 21 of the communication device 20 may continue to perform the process of step S200 when the notification information is not acquired (step S200: NO). Moreover, when the CPU 21 of the communication device 20 determines that the second vehicle B has not arrived at the traffic restriction point and has not stopped (step S202: NO), the CPU 21 may continue to perform the process of step S202.

After step S204, the CPU 21 of the communication device 20 determines whether the signal information has been acquired from the traffic control device 10 via the communication interface unit 29 (step S206). Upon acquiring the signal information (step S206: YES), the CPU 21 of the communication device 20 may display the acquired signal information on the display unit 26, for example, or automatically drive the second vehicle B based on the acquired signal information. Control may also be performed. Note that the CPU 21 of the communication device 20 may continue to perform the process of step S206 when the signal information is not acquired (step S206: NO).

After acquiring the signal information, if the CPU 21 of the communication device 20 determines that the corresponding second vehicle B has passed the traffic restriction point (step S208: YES), it generates passing information and transmits it to the traffic control device 10. (Step S210). Then, the CPU 21 of the communication device 20 may proceed to the process of step S200. Note that when the CPU 21 of the communication device 20 determines that the corresponding second vehicle B has not passed through the traffic restriction point (step S208: NO), the process may proceed to step S206.

As described above, according to the traffic control system, traffic control method, and program of the present embodiment, at least one lane among the lane L1, the oncoming lane L2, and the intersecting lane L3 that is the same lane as the lane where traffic is restricted by one-way alternate traffic. traffic control of the second vehicle B in at least one lane among the same lane L1, the oncoming lane L2, and the intersecting lane L3 (for example, to control the progress of the second vehicle B at a traffic restriction point) The driver of the stopped second vehicle B is able to communicate with the driver of the stopped second vehicle B. According to the signal information received by the communication device 20, the second vehicle B can be driven to pass through a traffic restriction point (for example, an alternate traffic section, a road construction section, etc.). This allows for cases where it is difficult to use traffic lights to control traffic, such as when traffic lights lose their functionality due to a power outage, or when a vehicle breaks down or an accident occurs on a road where no traffic lights are installed. Even in this case, traffic control of the second vehicle B stopped on each lane can be easily performed. Furthermore, according to the traffic control system, traffic control method, and program of the present embodiment, there is no need to temporarily install traffic lights or deploy guides, so costs related to the cost of traffic lights and the arrangement of guides are eliminated. can be reduced.

Note that the program of the present invention may be stored in a computer-readable storage medium. The storage medium in which this program is recorded may be the ROM 12, RAM 13, or storage device 14 of the traffic control device 10 shown in FIG. 2, or the ROM 22, RAM 23, or storage device 24 of the communication device 20 shown in FIG. Good too. Further, the storage medium may be, for example, a CD-ROM or the like that can be read by being inserted into a program reading device such as a CD-ROM drive. Furthermore, the storage medium may be a magnetic tape, a cassette tape, a flexible disk, an MO/MD/DVD, or a semiconductor memory.

The embodiments described above are described to facilitate understanding of the present invention, and are not described to limit the present invention. Therefore, each element disclosed in the above embodiments is intended to include all design changes and equivalents that fall within the technical scope of the present invention.

For example, in the embodiment described above, the case where the first vehicle A is stopped on the lane L1 due to a breakdown or an accident, and the passage of the lane L1 is restricted (prohibited) is described as an example, but the present invention is not limited to this case. For example, the first vehicle A may be a construction vehicle disposed in a road construction section, a vehicle disposed to create an alternate traffic section, or a vehicle A that is unable to move due to falling rocks, obstacles, etc. It may also be a vehicle that is blocked.

Further, in the embodiment described above, the case where the traffic control device 10 is provided in the first vehicle A is described as an example, but the present invention is not limited to this case. For example, the traffic control device 10 may be provided at a position near a traffic restriction point (for example, within 10 meters from the traffic restriction point). As a result, the second vehicle B stopped on each lane L1, L2, L3 at a position near the traffic restriction point (for example, on the road shoulder around the first vehicle A stopped at the traffic restriction point) traffic control.

Furthermore, in the embodiment described above, the case where the CPU 21 of the communication device 20 transmits vehicle information after receiving notification information from the traffic control device 10 has been described as an example, but the present invention is not limited to this case. For example, even if the CPU 21 of the communication device 20 has not received the notification information, the CPU 21 of the communication device 20 may acquire information regarding the current position measured by the position measuring device 28 or obtain predetermined information using the input unit 27. Vehicle information may be transmitted to the traffic control device 10 when it is determined by input or the like that the communication device 20 (that is, the corresponding second vehicle B) has arrived at the traffic restriction point and has stopped.

Furthermore, in the above-described embodiment, as shown in FIG. 1, the case where a traffic restriction point exists near a T-junction intersection has been described as an example; The present invention can be applied even when there is a traffic restriction point near such as.

Furthermore, in the above-described embodiment, the case where traffic control is performed using the traffic control device 10 on a road where no traffic lights are installed is described as an example; ), it is also possible to perform traffic control using the traffic control device 10. This makes it possible to easily perform traffic control even if, for example, a traffic signal loses its function due to a power outage or the like. In this case, the CPU 11 of the traffic control device 10, as a function of the estimation means 32, distinguishes between a lane extending in a predetermined direction and an oncoming lane of the lane (a lane whose traveling direction differs by approximately 180 degrees from the traveling direction of the lane). , within the first lane group that is a lane group that includes lanes whose traffic is restricted at a predetermined traffic restriction point (for example, in front of an intersection) based on the acquired vehicle information. The stopping situation of the second vehicle B in the lane of It may be estimated. Further, as a function of the signal generation means 33, the CPU 11 of the traffic control device 10 determines whether the second vehicle B is in a lane in either the first lane group or the second lane group based on the estimated stopping situation. Performs traffic control (for example, allowing the second vehicle B stopped on the lane in the first lane group to proceed, and stopping the progress of the second vehicle B on the lane in the second lane group, etc.) You may also generate signal information for. Here, the difference (angle) in the traveling direction between a lane included in a lane group and the opposite lane of the lane may be, for example, ±180°, or within a predetermined error range from ±180°. It may be a value within. Further, the number of each of the first lane group and the second lane group may be one or more than one. Here, if a plurality of first lane groups exist, the CPU 11 of the traffic control device 10, as a function of the signal generation means 33, selects one of the plurality of first lane groups. Only the second vehicle B that is stopped on the lane is allowed to proceed, and the second vehicle B on the lane in the other first lane group and the second vehicle B on the lane in the second lane group are allowed to proceed. Signal information may be generated to stop the process.

Furthermore, in the embodiment described above, each function of the first acquisition means 31, the estimation means 32, the signal generation means 33, the first transmission means 34, the second transmission means 35, and the second acquisition means 36 is performed by the traffic control device 10. Although the present invention is configured to achieve this, the present invention is not limited to this configuration. For example, a computer or the like (for example, a general-purpose personal computer, a server, etc.) that is communicably connected to the traffic control device 10 via a communication network such as the Internet or a LAN can perform at least one of the above-mentioned means 31 to 36. It is also possible to adopt a configuration that realizes the functions of Further, each function in the functional block diagram shown in FIG. 4 is an example of the traffic control device 10 and a computer communicably connected to the traffic control device 10, as shown in FIGS. 9(a) and 9(b). It may be arbitrarily divided between a certain traffic control server.

The traffic control system, traffic control method, and program of the present invention as described above can be suitably used for traffic control services for vehicles, and therefore have extremely large industrial applicability.

10...Traffic control device 20...Communication device 31...First acquisition means 32...Estimation means 33...Signal generation means 34...First transmission means 35...Second transmission means 36...Second acquisition means A...First vehicle B...First 2 vehicles L1...Same lane L2...Oncoming lane L3...Cross lane

Claims (18)

A traffic control system that performs traffic control for at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point,
first acquiring vehicle information wirelessly transmitted from a communication device present in each of the at least one vehicle, the vehicle information including information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle; acquisition means,
Estimating means for estimating the stopping status of the at least one vehicle in at least one of the same lane, the oncoming lane, and the intersecting lane as the traffic restricted lane at the traffic restriction point, based on the acquired vehicle information;
a signal generating means for generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane, based on the estimated stopping situation;
first transmitting means for wirelessly transmitting the generated signal information to each communication device of the at least one vehicle;
A traffic control system equipped with The traffic control system according to claim 1, further comprising a second transmitting means that wirelessly transmits notification information for notifying that the traffic restriction point is provided when predetermined information is input. The traffic control system according to claim 2, wherein the notification information includes information regarding the traffic restriction point. The traffic control system according to claim 3, wherein the information regarding the traffic regulation point includes at least one of latitude, longitude, and altitude of the traffic regulation point. The estimating means estimates the number and/or stopping period of vehicles stopped in at least one of the same lane, oncoming lane, and intersecting lane as the stopping status of the vehicles;
The signal generating means is configured to permit the vehicle to proceed on any one of the same lane, oncoming lane, and intersecting lane when the stopped state of the vehicle in any one of the lanes satisfies a predetermined condition. The traffic control system according to any one of claims 1 to 4, wherein the traffic control system generates signal information. The traffic control according to claim 5, wherein the predetermined condition includes that the number of vehicles stopped on any of the lanes is greater or less than the number of vehicles stopped on the other lanes. system. The traffic control system according to claim 5 or 6, wherein the predetermined condition includes that a vehicle having the longest stop period among the at least one vehicle is stopped on any of the lanes. The predetermined condition includes that the average stopping period of vehicles stopped on any of the lanes is longer than the average stopping period of vehicles stopping on the other lanes. The traffic control system described in any of the above. When a vehicle stopped in at least one of the same lane, the oncoming lane, and the intersecting lane passes through the traffic restriction point, passing information wirelessly transmitted from a communication device corresponding to the passing vehicle is acquired. comprising a second acquisition means;
The traffic control system according to any one of claims 5 to 8, wherein the estimating means reduces the number of vehicles in a lane where a passing vehicle was stopped in response to the acquisition of the passing information. The traffic control system according to any one of claims 1 to 9, wherein the signal generation means generates signal information at predetermined timings so as to switch a lane in which a vehicle is allowed to proceed. 11. The traffic control system according to claim 10, wherein the predetermined timing is a timing when all vehicles stopped on a lane in which travel is permitted have passed the traffic restriction point. 11. The traffic control system according to claim 10, wherein the predetermined timing is a timing at which a predetermined number of vehicles among vehicles stopped on a lane in which travel is permitted has passed the traffic regulation point. According to any one of claims 10 to 12, the predetermined timing is a timing when a predetermined time has elapsed after a vehicle on any one of the same lane, the oncoming lane, and the intersecting lane is permitted to proceed. traffic control system. At least one of the first acquisition means and the first transmission means performs cognitive wireless communication with a communication device present in each of the at least one vehicle by switching a wireless communication standard. The traffic control system according to any one of claims 1 to 13. The traffic control system according to any one of claims 1 to 14, wherein the traffic control system is installed in a vehicle stopped at the traffic regulation point. The traffic control system according to any one of claims 1 to 14, wherein the traffic control system is provided at a position near the traffic regulation point. A traffic control method in which a computer performs traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point, the method comprising:
The computer,
acquiring vehicle information wirelessly transmitted from a communication device present in each of the at least one vehicle, the vehicle information including information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle; ,
estimating the stopping status of the at least one vehicle in at least one of the same lane, the oncoming lane, and the intersecting lane as the traffic restricted lane at the traffic restriction point, based on the acquired vehicle information;
Generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane based on the estimated stopping situation;
wirelessly transmitting the generated signal information to a communication device of each of the at least one vehicle;
A traffic control method that performs each step of A program for causing a computer to perform traffic control on at least one vehicle stopped on a lane within a predetermined range from a predetermined traffic regulation point,
to the computer;
a function of acquiring vehicle information wirelessly transmitted from a communication device present in each of the at least one vehicle, the vehicle information including information regarding at least one of the position, traveling direction, and stop period of the corresponding vehicle; ,
A function of estimating the stopping status of the at least one vehicle in at least one of the same lane, the oncoming lane, and the intersecting lane as the traffic restricted lane at the traffic restriction point, based on the acquired vehicle information;
A function of generating signal information for performing traffic control of the at least one vehicle in at least one of the same lane, oncoming lane, and intersecting lane based on the estimated stopping situation;
a function of wirelessly transmitting the generated signal information to each communication device of the at least one vehicle;
A program to make this happen.

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