JP2013257667A - Traffic control system and information provision method for traffic control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic control system for achieving a service for providing traffic information whose added value is high and the information provision method of the traffic control system.SOLUTION: A traffic control system includes: probe information acquisition means; travel history creation means; traffic information creation means; and information provision means. The probe information acquisition means acquires probe information from an individual vehicle. The travel history creation means creates travel history information showing the travel history of an individual vehicle on the basis of the probe information acquired by the probe information acquisition means. The traffic information creation means creates traffic information showing a traffic situation on a road on the basis of control information relating to traffic control including information to be acquired from equipment installed at a road side and the travel history information of an individual vehicle created by the travel history creation means. The information provision means provides the traffic information created by the traffic information creation means.

Description

  Embodiments described herein relate generally to a traffic control system and a traffic management system information providing method.

  In some conventional traffic control systems, a central processing unit processes information related to traffic and creates provided information based on a measurement result of a vehicle detector which is a sensor installed on a roadside. In addition, there is a system in which a vehicle is regarded as a probe (probe), and probe information such as the position, speed, acceleration and deceleration of each vehicle is collected, and a failure of the vehicle is detected using the collected probe information. At present, a system composed of devices installed on the road side obtains information that captures the traffic situation of the route in a macro manner. At present, a system for collecting probe information from a vehicle obtains supplementary information such as a failure of a device in each vehicle.

JP 2010-061435 A

  In view of the circumstances as described above, it is an object of the present invention to provide a traffic control system and a traffic control system information providing method capable of realizing a service that provides high-value-added traffic information.

  According to the embodiment, the traffic control system includes probe information acquisition means, travel history creation means, traffic information creation means, and information provision means. The probe information acquisition means acquires probe information from each vehicle. The travel history creation means creates travel history information indicating the travel history of each vehicle based on the probe information acquired by the probe information acquisition means. The traffic information creation means generates traffic information indicating traffic conditions on the road based on control information related to traffic control including information acquired from equipment installed on the roadside and travel history information of individual vehicles created by the travel history creation means. create. The information providing means provides the traffic information created by the traffic information creating means.

FIG. 1 is a block diagram schematically showing an example of the overall configuration of the traffic control system according to the present embodiment. FIG. 2 is a block diagram schematically showing a configuration example of the traffic control system according to the first embodiment. FIG. 3 is a block diagram schematically showing a configuration example of the traffic control system according to the second embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
The traffic control system according to the present embodiment is a system that determines a traffic situation such as a traffic jam situation on a road and provides information indicating the traffic situation such as a traffic jam. The traffic control system creates detailed information indicating traffic conditions such as traffic jams based on information collected from devices such as vehicle detectors installed on the roadside and information collected from each vehicle. In addition, the traffic control system provides a service for displaying information indicating traffic conditions such as traffic jams created on a bulletin board installed on a road or distributing the information to an on-vehicle device of each vehicle.

FIG. 1 is a block diagram illustrating a hardware configuration example of a traffic control system according to the first and second embodiments.
The traffic control system according to the present embodiment includes a probe information collection system 1, a vehicle detector 3A, an anemometer 3B, a monitoring camera 3C, an emergency telephone 3D, a central processing unit 5, a control unit 7, a character information board 9A, and graphic information. It is configured by hardware such as a board 9B, a required time display board 9C, and an information distribution device 9D.

  The vehicle detector 3A, the wind direction anemometer 3B, the monitoring camera 3C, and the emergency telephone 3D are devices for collecting information indicating traffic conditions or weather conditions on the road, and are collectively referred to as collection system terminals (roadside devices). Shall. The vehicle detector 3 </ b> A detects information such as traffic on the road, speed, vehicle density, and time occupancy, and supplies the detected information to the central processing unit 5. The wind direction anemometer 3 </ b> B measures the wind direction and wind speed as weather information on the road, and supplies information indicating the measured wind direction and wind speed to the central processing unit 5. The monitoring camera 3C captures a road image and supplies the captured image to the traffic control device as a road monitoring image. The emergency telephone 3D is for a person such as a driver of a vehicle or a person in the vicinity of the road to report information such as an emergency situation by voice and to perform a voice call with a staff member of the control device.

  Further, the character information board 9A, the graphic information board 9B, the required time display board 9C, and the information distribution device 9D are various devices for providing various traffic information to the vehicle users on the road. It shall generically be referred to as a system terminal (information providing device). The character information board 9A is a display device for providing traffic information as characters to vehicles traveling on the road. The graphic information board 9B is a display device for providing traffic information as a graphic to a vehicle traveling on a road. The required time display board 9 </ b> C is a display device for providing an estimated required time to reach a main destination for a vehicle traveling on a road. The information distribution device 9D is a device for distributing traffic information to the vehicle-mounted device mounted on the vehicle. For example, the information distribution device 9D may distribute the traffic information to the vehicle-mounted device by wireless communication according to a predetermined standard, or may transmit the traffic information by radio waves for radio broadcasting.

  The probe information collection system 1 regards the vehicle as a probe (probe) and receives information from various detection devices mounted on the vehicle (for example, time-series position information data, velocity data, acceleration / deceleration data, etc.) Information) as probe information. For example, as the probe information, longitude information, latitude information, altitude information is included as time-series vehicle information that can be obtained by a vehicle-mounted device (on-vehicle portable communication terminal) mounted on each vehicle using a detection system such as GPS. , Position accuracy, speed information, travel direction, acceleration / deceleration information (acceleration in X, Y, and Z directions) and the like may be included. Further, the probe information may include ID information for identifying the vehicle, date and time information, communication mode, or travel mode information.

  Even if the probe information collection system 1 collects probe information from an in-vehicle device (an in-vehicle mobile communication terminal or a mobile communication terminal possessed by a passenger) on which a dedicated data collection server is mounted in each vehicle. good. For example, the vehicle-mounted device may transmit probe information to the data collection server at a predetermined time interval via a wireless communication network, or the probe information is held in a memory in the vehicle-mounted device and installed on the roadside. The probe information held in the memory may be transmitted by road-to-vehicle communication with the roadside infrastructure. Moreover, although the vehicle-mounted device is assumed to be a vehicle-mounted terminal of a car navigation system, the vehicle-mounted device may be a mobile communication terminal having a GPS function such as a smartphone possessed by a vehicle user.

  Further, in the traffic control system according to the present embodiment, the probe information collection system 1 transmits the probe information collected from each vehicle to the central processing unit 5 provided in a traffic control center or the like. The probe information collection system 1 may also transmit the probe information collected from each vehicle to the control device 7 provided in the control room of the traffic control center.

  The central processing unit 5 performs various types of information processing on various pieces of information obtained from the collection system terminal. The central processing unit 5 is a central device of the traffic control system and is installed in a control center or the like. For example, the central processing unit 5 has an information processing function for determining traffic jam information such as a traffic jam distance, a traffic jam location, and a traffic jam situation, and calculating a required time in consideration of the traffic jam. The central processing unit 5 creates control information related to traffic control in consideration of information input by the controller from the control device 7 in addition to traffic jam information and required time information. Also, many events occur on the road, and the information to be provided differs depending on the location where the information is provided. For this reason, the central processing unit 5 creates necessary information according to the information provision position (installation position of the provision system terminal), and transmits the information provided by each provision system terminal.

In the configuration example shown in FIG. 1, the central processing unit 5 includes a control unit 11, a memory 12, input interfaces (I / F) 14, 15, 16, and an output I / F 17.
The control unit 11 controls the entire central processing unit 5 and performs information processing. The control unit 11 includes a processor such as a CPU, a working memory such as a RAM for temporarily storing work data, a non-volatile memory such as a ROM for storing programs and control data, and various interfaces. Composed. The control unit 11 implements various processing functions by the processor executing programs stored in the internal non-volatile memory or the memory 12. The memory 12 stores various data or various program data for realizing a processing function by the control unit 11.

  The input I / Fs 14, 15, and 16 are interfaces for inputting information. The input I / F 14 is an interface for inputting information from the probe information collection system 1. The input I / F 14 is applied according to the information acquisition method from the probe information collection system 1. For example, if the probe information collection system 1 is configured to store probe information collected from each vehicle in a dedicated data collection server, the input I / F 14 performs data communication with the data collection server of the probe information collection system 1. What is necessary is just to comprise with an interface. Further, in the operation mode in which probe information acquired from the vehicle-mounted device of each vehicle is directly taken into the central processing unit 5 by road-to-vehicle communication or the like, the input I / F 14 is road-side communication that performs road-to-vehicle communication with the vehicle-mounted device. What is necessary is just to comprise with the interface which inputs data from an apparatus.

The input I / F 15 is an interface for inputting information from a collection system terminal such as a vehicle detector 3A or an anemometer 3B as a collection system terminal. For example, the input I / F 15 inputs traffic information detected by the vehicle detector 3A (traffic volume, average speed, occupation rate, large vehicle mixing rate, etc.). The input I / F 16 is an interface for inputting information from the control device 7. For example, the input I / F 16 inputs information such as construction schedule information, accident information, or system setting information input by the controller in the control device 7.
The output I / F 17 is an interface that outputs information to be provided to the providing terminal. The output I / F 17 outputs the traffic information created by the control unit 11 to be presented to the vehicle or the vehicle user to the providing terminal. The control unit 11 transmits information (traffic information such as traffic jam information) in a format that can be provided (displayed) by each providing system terminal to each providing system terminal through the output I / F 17. For example, under the control of the control unit 11, the output I / F 17 outputs information indicating traffic conditions to the character information board 9A as display character information, and information indicating traffic conditions to the graphic information board 9B. It is output as graphic information for display, the required time to the main destination is output as display information to the required time display board 9C, and information for distribution to each vehicle-mounted device is output to the information distribution device 9D. Output.

  The control device 7 is a facility for the controller to perform traffic control, monitoring of traffic conditions on the road, and traffic control according to the traffic conditions. For example, the control device 7 is a facility composed of various devices including a control device, a display device, an operation device, and the like, and is installed in a traffic control room of a traffic control center in which a controller is resident. The control device 7 presents information indicating the traffic situation to the controller using a display device or the like, and accepts information input from the controller.

In the configuration example illustrated in FIG. 1, the control device 7 includes a control unit 21, a memory 22, an operation unit 24, a display unit 23, an input I / F 25, a voice response unit 26, and an output I / F 27.
The control unit 21 is a device that controls the entire control device 7. The control unit 21 includes a processor such as a CPU, a working memory such as a RAM for temporarily storing work data, a nonvolatile memory such as a ROM for storing programs and control data, and various interfaces. Composed. The control unit 21 implements various processing functions by the processor executing programs stored in the internal nonvolatile memory or the memory 22. The memory 22 stores various data or various program data for the control unit 21 to realize a processing function.

  The operation unit 24 is an operation device for inputting information that should be manually input by a controller, such as information on an accident, information such as a construction schedule, or system setting information. The display unit 23 is a display device for displaying collected information such as traffic conditions or monitoring video to the controller.

  The input I / F 25 is an interface for inputting information from the collection system terminal. In the example illustrated in FIG. 1, the input I / F 25 inputs a monitoring image captured by the monitoring camera 3C from the monitoring camera 3C. The voice response unit 26 is configured to allow the controller to make a call with the emergency telephone 3D as one of the collection-system terminals. The output I / F 27 is an interface for transmitting information to the central processing unit 5. The output I / F 27 outputs information such as accident information, construction schedule information, or system setting information, which is manually input by the controller through the operation unit 24, to the central processing unit 5.

Next, the traffic control system according to the first embodiment will be described.
FIG. 2 is a block diagram illustrating a configuration example for realizing the traffic control system according to the first embodiment.
In the configuration example shown in FIG. 2, the traffic control system includes a probe information collection system 1, a vehicle sensor 3A as a collection system terminal, a central processing unit 5, a control system 7, and a presentation system terminal.

  In the configuration example shown in FIG. 2, the central processing unit 5 includes a roadside information collection function 31, a roadside information management function 32, a roadside information DB 33, as functions realized when the processor of the control unit 11 executes a program. Input information acquisition function 34, control information management function 35, probe information acquisition function 41, probe information management function 42, probe information DB 43, travel history information creation function 44, travel history information DB 45, traffic information creation function 51, congestion information creation function 52, provided information creation function 53, information providing function 54, and the like.

  In the traffic control system according to the first embodiment, the central processing unit 5 includes roadside information (for example, traffic volume, average speed) collected by a collection system terminal (roadside equipment) such as the vehicle detector 3A installed on the roadside. , Density, etc.) and probe information collected from each vehicle's on-board device as an individual vehicle, and various processing functions for creating traffic information including high value-added information It is what you have. Each function (component) shown in FIG. 2 may be provided in one central processing unit 5 as shown in FIG. 2, or may be provided in a plurality of processing devices capable of mutual communication. good.

  In the configuration example shown in FIG. 2, in the traffic control system according to the first embodiment, the vehicle detector 3A as a collection system terminal (roadside device) installed on the roadside indicates the traffic situation at the observation point on the road. Information is measured as roadside information. For example, the vehicle detector 3A is configured such as a traffic volume that is a passing traffic volume per unit time, an average speed per unit time, a time occupation rate per unit time (a value corresponding to a density) at an observation point on the road. Information is measured as roadside information.

  The central processing unit 5 acquires information (roadside information) measured by a roadside device such as the vehicle detector 3 </ b> A by the roadside information collecting function 31. The roadside information collection function 31 functions as information acquisition means (first information acquisition means) for acquiring roadside information from roadside equipment such as a vehicle detector installed on the roadside. The roadside information collection function 31 is a function realized by the control unit 11 controlling the input I / F 15.

  The roadside information management function 32 stores the roadside information acquired from the roadside equipment by the roadside information collection function 31 in the roadside information DB 33. The roadside information management function 32 functions as information management means for accumulating roadside information acquired by the roadside information collection function 31 in the roadside information DB 33 and reading information stored in the roadside information DB 33. The roadside information management function 32 is a processing function realized by the control unit 11 executing a program. The roadside information DB 33 is a database that stores roadside information managed by the roadside information management function 32. The roadside information DB is configured by a storage area provided in the memory 12, for example.

  Further, the controller monitors the road condition by the control device 7 and also supplies traffic information (for example, accident information, construction schedule information, or system management information) to be manually input by the operation unit 24 of the control device 7. input. The control device 7 supplies input information (input control information) input by the controller via the operation unit 24 to the central processing unit 5 via a dedicated communication line or the like. The central processing unit 5 acquires the input control information from the control device 7 by the input information acquisition function 34. The input information acquisition function 34 functions as information input means for acquiring information (accident information, construction schedule information, system management information, etc.) input by the controller using the operation unit 24 of the control device 7. The input information acquisition function 34 is a function realized by the control unit 11 controlling the input I / F 16.

  The control information management function 35 includes information registered in the roadside information DB 33 managed by the roadside information management function 32 (information collected from roadside devices such as vehicle detectors) and information acquired by the input information acquisition function 34 (control). Information inputted from the device 7) is integrated and managed as traffic control information. That is, the control information management function 35 manages traffic control information based on information obtained from roadside devices and control devices. For example, the control information management function 35 uses information (such as traffic volume, average speed, occupancy (density), etc.) measured by the vehicle detector 3A as information input by the controller to the control device 7 (information such as traffic volume, average speed, occupation rate (density)). Traffic control information is generated by adding information such as accident information, construction information, and system information.

  Further, the central processing unit 5 has a probe information acquisition function 41 that probes each vehicle and acquires probe information such as position information and speed information of each vehicle. The probe information acquisition function 41 acquires probe information of each vehicle from the probe information collection system 1. The probe information acquisition function 41 is realized by the control unit 11 controlling the input I / F 14 as a communication interface according to the configuration of the probe information collection system 1. For example, if the probe information collection system 1 is configured to collect probe information from each vehicle on a dedicated server, the probe information acquisition function 41 acquires the probe information of each vehicle from the dedicated server of the probe information collection system 1. good. In the probe information collection system 1, if the vehicle-mounted device of each vehicle (or the mobile terminal possessed by the vehicle occupant) outputs probe information by wireless communication for mobile phones, the probe information acquisition function 41 is a mobile phone. You may make it acquire the probe information of each vehicle by radio | wireless communication. In addition, when the ITS on-board device mounted on the vehicle is in a form of road-to-vehicle communication with the road-side communication device as the road-side infrastructure, the probe information acquisition function 41 is transmitted from the ITS on-vehicle device that performs road-to-vehicle communication with the road-side communication device. Probe information may be acquired.

  The probe information may be any information that can be detected or measured by a sensor mounted on each vehicle. For example, each vehicle detects the current position of the vehicle by a GPS function provided in the vehicle-mounted device. In this case, the probe information acquisition function 41 acquires time-series latitude information and longitude information measured by the vehicle-mounted device of each vehicle as the position information of the vehicle from each vehicle as probe information. The probe information may include information such as vehicle ID information, vehicle-mounted device ID information, communication mode, travel mode, date / time, speed information, acceleration information, travel direction, altitude, position accuracy, and lane information. .

  The probe information management function 42 is a function for managing probe information acquired from the probe information collection system by the probe information acquisition function 41. The probe information DB 43 is a database that stores probe information managed by the probe information management function 42. The probe information DB 43 is configured by a storage area provided in the memory 12, for example.

  The probe information management function 42 performs predetermined information processing on the acquired probe information, accumulates the probe information acquired by the probe information acquisition function 41 in the probe information DB 43, and reads information stored in the probe information DB 43. Function as an information management means. The probe information management function 42 is a processing function realized by the control unit 11 executing a program. For example, the probe information management function 42 performs preprocessing such as missing measurement processing on the probe information acquired by the probe information acquisition function 41 and accumulates it in the probe information DB 43. Here, the probe information management function 42 performs processes such as an abnormal value filtering process (a process for eliminating abnormal values) and an alternative data allocation process at the time of missing as pre-processing.

  The travel history information creation function 44 uses the probe information managed by the probe information management function 42 to create information related to vehicle travel and information related to vehicle traffic flow as travel history information.

  For example, the travel history information creation function 44 identifies the travel history of the vehicle based on time-series position information (latitude information and longitude information) included in the probe information, and creates travel history information. The travel history information creation function 44 uses information on the longitude and latitude of each passing time that the vehicle has traveled based on the time-series latitude information and longitude information included in the probe information as information on the travel history of each vehicle. The specified travel locus (travel history) is computerized.

  The travel history information creation function 44 may create travel history information in conjunction with time-series position information and map information. As a result, as the travel history information, a road that has passed can be identified with high accuracy, and easy-to-understand information can be created in cooperation with the map information. Further, when the probe information does not include speed information and acceleration information, the travel history information creation function 44 uses the vehicle time-series position information (time-lapse travel history information) to determine the travel distance of the vehicle per unit time, and The speed change may be calculated. That is, the travel history information creation function 44 can create speed and acceleration information of each vehicle from time-series position information included in probe information acquired from each vehicle.

  If the accuracy of the position information (for example, latitude and longitude information) included in the probe information is high, the travel history information creation function 44 specifies the lane in which each vehicle is traveling from the position information included in the probe information. You may do it. When the travel lane can be identified from the probe information, the travel history information creation function 44 can also identify information related to the lane change of the vehicle from the time-series position information (information indicating the travel lane).

  With the travel history information created by the travel history information creation function 44 as described above, the travel history of each vehicle can be specified. For example, where and how much each vehicle has stopped, the travel speed of each vehicle, or In addition, it becomes possible to grasp the driving situation such as the interval between stopping and driving of individual vehicles in a traffic jam. The travel history information DB 45 stores the travel history information of each vehicle created by the travel history information creation function 44. The travel history information creation function 44 supplies travel history information created from the probe information to the traffic information creation function 51 and accumulates it in the travel history information DB 45.

  In the traffic information creation function 51, traffic for grasping the traffic situation of the road based on the control information managed by the control information management function 35 and the travel history information of each vehicle created by the travel history information creation function 44. Create information. For example, in contrast to control information as macro traffic information such as traffic status information (for example, information indicating the degree of traffic congestion) for each section managed by the control information management function 35, the lane of each vehicle indicated by the travel history information Combine vehicle unit traffic information (travel history information) such as unit speed or acceleration / deceleration status of each vehicle (for example, frequent acceleration / deceleration, sudden acceleration, sudden deceleration, etc.) To create detailed traffic information. That is, the traffic information creation function 51 creates traffic information that combines macro traffic information (control information) and traffic information (travel history information) for each vehicle. Thereby, the traffic information creation function 51 can create, for example, traffic information in which travel history information of a vehicle that actually travels is added to traffic information (control information) at a certain time in a certain section.

  The traffic jam information creating function 52 creates information on traffic jam conditions (traffic jam information) based on the traffic information taking into account the travel history information created by the traffic information creating function 51. The control information (control information managed by the control information management function) created from information acquired from roadside devices and control devices, for example, divides the target route into certain sections, and the traffic congestion status (for example, average speed) for each section. Based on information such as congestion, congestion, and non-congestion levels). On the other hand, the traffic information created by the traffic information creation function 51 is detailed traffic information in consideration of travel history information of each vehicle.

  For example, the traffic information created by the traffic information creation function 51 may include the speed for each lane obtained from the travel history information or the average speed for each lane obtained from the travel history information of a plurality of vehicles. In this case, the traffic jam information creation function 52 can acquire not only the control information from the traffic information creation function 51 but also information such as the speed for each vehicle lane or the average speed for each lane of a plurality of vehicles. Thereby, the traffic jam information creation function 52 can determine the traffic situation (traffic jam situation) for each lane based on the speed for each lane of each vehicle or the average speed for each lane of a plurality of vehicles. As a method for determining the traffic situation by the traffic information creating function 52, a method for setting a threshold for the average speed and determining the traffic situation by comparing with the threshold can be considered. For example, as exemplified in the following (a1) to (a3), a method of determining the traffic congestion state of each lane using a threshold value is conceivable.

Average speed> 40km / h ・ ・ ・ No traffic jam (free flow)
20 km / h <average speed ≦ 40 km / h... Congestion Average speed ≦ 20 km / h.

  The traffic information created by the traffic information creation function 51 may include information indicating the acceleration / deceleration status of the vehicle obtained from the travel history information. In this case, the traffic jam information creation function 52 can acquire not only control information but also information indicating the acceleration / deceleration status of each vehicle from the traffic information creation function 51. As a result, the traffic jam information creation function 52 creates traffic jam information in which additional information (information indicating the traffic jam status) is added based on the acceleration / deceleration status of each vehicle. be able to. The traffic jam information creation function 52 can create additional information related to traffic jams based on the acceleration / deceleration status of each vehicle according to the following criteria (b1) to (b5), for example.

(B1) When frequent acceleration / deceleration occurs ... Congestion with dense waves (b2) When deceleration vehicle propagates upstream over time ... Congestion extension situation (b3) Deceleration vehicle is time If the vehicle is propagating downstream, the traffic jam elimination status (b4) If the same low speed continues ... Traffic jam due to low speed driving (b5) If there are many parked vehicles ... Stop level Traffic jam.
The traffic jam information creating function 52 that created the traffic jam information as described above supplies the created traffic jam information to the provision information creating function 53.

  The provision information creation function 53 creates information to be provided to the vehicle user. The provided information creation function 53 creates information to be provided based on control information managed by the control information management function 35, traffic information created by the traffic information creation function 51, traffic information created by the traffic information creation function 52, and the like. To do. For example, as the information to be provided, the following information (c1) to (c5) can be considered.

(C1) Congestion situation in each section Information indicating the congestion in each section is information included in the control information managed by the control information management function 35, for example. For this reason, the provision information creation function 53 creates provision information indicating the traffic congestion status of each section based on the control information acquired from the control information management function 35.

(C2) Congestion situation for each lane in each section Information indicating the traffic congestion for each lane is information that can be created from information indicating the driving lane of each vehicle and the average speed for each lane, for example. Is information that can be created by the traffic jam information creating function 52 using traffic information that takes into account the travel history of each vehicle. For this reason, the provision information creation function 53 creates provision information indicating a traffic jam situation for each lane based on the traffic jam information created by the traffic jam information creation function 52.

(C3) Additional information such as traffic congestion extension, cancellation status, and density information in each section Additional information indicating the detailed status of traffic congestion is information that can be created from information indicating the acceleration / deceleration status of each vehicle. This is information that can be created by the traffic jam information creating function 52 using traffic information that takes into account the travel history including the acceleration / deceleration status of each vehicle created by the information creating function 51. For this reason, the provision information creation function 53 creates information including additional information indicating the detailed situation of the traffic jam as the provision information based on the traffic jam information created by the traffic jam information creation function 52.

(C4) Travel Required Time in Each Section The travel required time in each section is information that can be calculated by, for example, average speed as macro information included in control information managed by the control information management function 35. For this reason, the provision information creation function 53 creates provision information indicating the required travel time in each section based on the control information acquired from the control information management function 35.

(C5) Travel time for each lane in each section (calculated based on average speed for each lane)
The travel time for each lane is, for example, information that can be created from information indicating the travel lane of each vehicle and the average speed for each lane, and traffic information that takes into account the travel history of each vehicle created by the traffic information creation function 51 This is information that can be created by the traffic jam information creating function 52. For this reason, the provision information creation function 53 creates provision information indicating the required travel time for each lane based on the traffic jam information created by the traffic jam information creation function 52.

  The provision information creation function 53 that created the provision information as described above supplies the created provision information to the information provision function 54.

  The information provision function 54 is a function for outputting the provision information created by the provision information creation function 53 to each information provision device 9. The information providing function 54 is realized by the control unit 11 controlling the output I / F 17 as a communication interface according to a communication method with each information providing device. The information providing function 54 converts the provided information into a data format corresponding to each information providing device, and transmits the provided information to each information providing device by a communication method capable of communicating with each information providing device. For example, the information providing function 54 may be configured according to the form of the information providing device 9, such as traffic jam information to which additional information indicating detailed traffic jam conditions such as a traffic jam situation, a traffic jam extension tendency, or a cancellation tendency for each lane is added. Distribute the information provided.

  When providing information to the character information board 9A (graphic information board 9B) connected to the central processing unit 5 through a dedicated line, the information providing function 54 can display the provided information on the character information board 9A (graphic information board 9B). Is converted into display data and transmitted to the character information board 9A (graphic information board 9B). Further, the information providing function 54 may provide information via a wide-area communication network such as the Internet, or may be a vehicle-mounted device or a vehicle via a mobile phone communication network, road-to-vehicle communication, dedicated radio broadcast, or the like. Information may be provided to the mobile terminal of the user. The information providing function 54 may provide information to an information terminal provided in a specific parking area or the like.

  As described above, in the traffic control system according to the first embodiment, not only the information collected from roadside equipment and the control information (macro traffic information) generated by the input control information input by the controller, but also each vehicle In consideration of traffic information (traffic information for each vehicle) collected as probe information from the vehicle, detailed traffic information and detailed traffic information are created, and the detailed traffic information and detailed traffic status are shown. Provide information. Thus, according to the traffic control system according to the first embodiment, detailed traffic information that cannot be provided only by control information (macro traffic information) generated from information collected from roadside equipment and input information of the controller, or It is possible to provide detailed traffic information (for example, detailed information on traffic conditions for each lane, extension and cancellation of traffic in a section, etc.).

Next, a traffic control system according to the second embodiment will be described.
FIG. 3 is a block diagram illustrating a configuration example for realizing the traffic control system according to the second embodiment.
The traffic control system according to the second embodiment of the configuration example shown in FIG. 3 is realized by the hardware configuration shown in FIG. 1, and is used as the probe information collection system 1 and the collection system terminal (roadside device) 3. It has a vehicle sensor 3A, a central processing unit 5, a control unit 7, and a providing system terminal (information providing device) 9.

  In the configuration example shown in FIG. 3, the central processing unit 5 includes a roadside information collection function 31, a roadside information management function 32, a roadside information DB 33, as functions realized when the processor of the control unit 11 executes a program. Input information acquisition function 34, control information management function 35, probe information acquisition function 41, probe information management function 42, probe information DB 43, travel history information creation function 44, travel history information DB 45, traffic information creation function 51, provision information creation function 53, an information providing function 54, a traffic information prediction function 61, a traffic simulation function 62, and a traffic jam prediction function 63.

  The traffic control system according to the second embodiment creates information such as future traffic conditions and future traffic jam forecasts and provides the information to the user. In the traffic control system according to the second embodiment, the central processing unit 5 includes roadside information (for example, traffic volume, average speed) collected by a collection system terminal (roadside equipment) such as the vehicle detector 3A installed on the roadside. , Information such as density) and probe information collected from the vehicle-mounted device of each vehicle, information such as future traffic conditions and future traffic congestion forecasts is created. Each function (component) shown in FIG. 2 may be provided in one central processing unit 5 as shown in FIG. 2, or may be provided in a plurality of processing devices capable of mutual communication. good.

  3, the roadside information collection function 31, the roadside information management function 32, the roadside information DB 33, the input information acquisition function 34, the control information management function 35, the probe information acquisition function 41, the probe information management function 42, The probe information DB 43, the travel history information creation function 44, the travel history information DB 45, the traffic information creation function 51, the provision information creation function 53, and the information provision function 54 are configured in the traffic control system according to the first embodiment shown in FIG. Roadside information collection function 31, roadside information management function 32, roadside information DB33, input information acquisition function 34, control information management function 35, probe information acquisition function 41, probe information management function 42, probe information DB43, travel history Information creation function 44, travel history information DB 45, traffic information creation function 51, provision information creation function 53 It can be realized by having the same function as called information providing function 54.

  For this reason, the roadside information collection function 31, roadside information management function 32, roadside information DB33, input information acquisition function 34, control information management function 35, probe information acquisition function 41, probe information management function 42, and probe information DB43 shown in FIG. Detailed description of the travel history information creation function 44, the travel history information DB 45, the traffic information creation function 51, the provision information creation function 53, and the information provision function 54 will be omitted.

  However, in the configuration example shown in FIG. 3, the traffic jam information creation function 52 shown in FIG. 2 described in the first embodiment is replaced with a traffic jam prediction function 63, and the traffic information creation function 51 is created. The traffic information is also supplied to the traffic information prediction function 61 and the traffic simulation function 62. The traffic control system according to the second embodiment may have a configuration in which a traffic information prediction function 61, a traffic simulation function 62, and a traffic jam prediction function 63 are added to the configuration shown in FIG. According to such a configuration, the central processing unit 5 can provide not only current traffic information and traffic jam information but also future traffic forecast information and traffic jam forecast information.

  The traffic information prediction function 61 is a function for predicting future traffic information based on the traffic information created by the traffic information creation function 51. The traffic information prediction function 61 has a function of predicting a traffic volume as traffic information. For example, the traffic information prediction function 61 includes information on the traffic volume of the target route such as the on-ramp traffic volume and the most upstream traffic volume of the target route, the traffic volume at the location where the vehicle flows into the target route, and the off-ramp traffic volume and target. A function and target that obtains traffic information from the traffic information created by the traffic information creation function, such as the traffic volume of the most downstream of the main line, from the target route, and predicts the traffic flowing into the target route. You may make it estimate the traffic flow out of a route.

  As a method for the traffic information prediction function 61 to predict the traffic volume, past traffic information or the like is stored as accumulated data in the memory 12 (or a memory of an external device capable of communication), and the autoregressive model is used using the accumulated data. A method of predicting traffic using a statistical model such as the above, or a past day's traffic fluctuation pattern is accumulated in the memory 12 (or a memory of an external device capable of communication), and past similar days A similar day search method that predicts traffic volume based on the search results can be used.

  The traffic information prediction function 61 supplies traffic information prediction values such as the estimated traffic volume values to the traffic simulation function 62. The traffic simulation function 62 simulates and predicts the future traffic situation of the target route based on the predicted value of traffic information and the traffic information created by the traffic information creation function 51. The traffic simulation function 62 can apply various traffic flow simulation methods with respect to the traffic simulation.

  For example, it is assumed that the traffic simulation function 62 performs a traffic flow simulation of the relevant route for n hours in the future from the time of calculation. Here, when the simulation prediction is performed using the micro traffic flow simulation that simulates the behavior of each vehicle, the traffic simulation function 62 predicts the future traffic situation for each route based on the behavior prediction of each vehicle. Is possible.

  For example, it is assumed that the traffic information creation function 51 has acquired accident information such as an accident occurrence location, an accident occurrence situation (lane closure, etc.) as control information due to the occurrence of an accident. When it is detected from the acquired accident information that a lane closure due to an accident has occurred (that is, when the lane closure information is input), the traffic simulation function 62 shows how the traffic congestion will be extended as the future road traffic situation. The traffic congestion situation, such as whether or not to resolve, is predicted by simulation. Further, in this case, the traffic simulation function 62 is configured so that when the congestion is extended, the traffic simulation function 62 indicates whether the vehicle is in a dense state where acceleration / deceleration is repeated and propagates in the congestion range or is traveling at a low speed in general. Additional information indicating a detailed situation may be predicted by a traffic flow simulation.

  The traffic simulation function 62 supplies traffic information indicating the future traffic situation predicted by the traffic flow simulation to the traffic jam prediction function 63. The traffic jam prediction function 63 predicts a future traffic jam situation based on the predicted value of the traffic information obtained by the traffic simulation function 62 by simulation for each vehicle. However, the traffic jam prediction function 63 uses the same method as the traffic jam information creation function 52 described in the embodiment of the younger brother 1 except that the information to be used is traffic information indicating the future road traffic situation. Traffic jam forecast information). For this reason, here, detailed description of a method for creating traffic jam information (traffic jam prediction information) by the traffic jam prediction function 63 is omitted.

  As described above, in the traffic control system according to the second embodiment, not only the information collected from the roadside equipment and the control information (macro traffic information) generated by the input control information input by the controller, but also each vehicle In consideration of traffic information (traffic information for each vehicle) collected as probe information from the vehicle, detailed traffic information is predicted, and information (congestion prediction information) indicating detailed traffic congestion status based on the predicted traffic information is created. Provide detailed traffic information forecast value and detailed traffic jam forecast information.

  Thus, according to the traffic control system according to the second embodiment, detailed traffic information that cannot be provided only by control information (macro traffic information) generated from information collected from roadside equipment and input information of the controller. Predicted values or detailed traffic jam forecast information (for example, detailed information such as traffic jam status forecasts, traffic jam extension forecasts, and cancellation forecasts for each lane) can be provided.

  According to this embodiment, the traffic control system includes a probe related to control information based on macro information detected by equipment installed on the roadside and input information input by the controller, and traveling of each vehicle collected from individual vehicles. Detailed traffic information such as detailed traffic information provided to the user by fusing information (information on a vehicle unit) is created. This makes it possible to provide detailed traffic information with high added value that has been difficult to provide using only the equipment installed on the roadside or the probe information collected from each vehicle (for example, traffic congestion in each lane, state of congestion) Traffic congestion prediction, etc.), and the information provided to the user can be advanced to improve the service.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Probe information collection system, 3 ... Roadside apparatus (collection system terminal), 5 ... Central processing unit, 7 ... Control apparatus, 9 ... Information provision apparatus (providing system terminal), 11 ... Control part, 12 ... Memory, 14, DESCRIPTION OF SYMBOLS 15, 16 ... Input interface, 17 ... Output interface, 21 ... Control part, 22 ... Memory, 23 ... Display part, 24 ... Operation part, 26 ... Voice response part, 31 ... Roadside information collection function, 32 ... Roadside information management function 33 ... Roadside information DB, 34 ... Input information acquisition function, 35 ... Control information management function, 41 ... Probe information acquisition function, 42 ... Probe information management function, 43 ... Probe information DB, 44 ... Travel history information creation function, 45 ... travel history information DB, 51 ... traffic information creation function, 52 ... congestion information creation function, 53 ... provided information creation function, 54 ... information provision function, 61 ... traffic information prediction function, 62 ... traffic Simulation function, 63 ... congestion prediction function.

Claims (11)

In a traffic control system that controls traffic on roads,
Probe information acquisition means for acquiring probe information from individual vehicles;
Travel history creation means for creating travel history information indicating the travel history of individual vehicles based on the probe information acquired by the probe information acquisition means;
Traffic information indicating traffic conditions on the road based on control information related to traffic control created based on information acquired from equipment installed on the roadside and travel history information of individual vehicles created by the travel history creating means Traffic information creation means to create;
Information providing means for providing traffic information created by the traffic information creating means;
Having a traffic control system. Furthermore, roadside information acquisition means for acquiring roadside information indicating a result of detecting a vehicle by a device installed on the roadside,
Control information management means for creating control information related to traffic control based on the information acquired by the roadside information acquisition means,
The traffic information creation means creates traffic information related to traffic conditions on the road based on the control information created by the control information management means and information related to the travel history of each vehicle created by the travel history creation means.
The traffic control system according to claim 1. Furthermore, it has an input information acquisition means for acquiring information input by the controller,
The control information management means creates control information based on the information acquired by the roadside information acquisition means and the information acquired by the input information acquisition means.
The traffic control system according to claim 2. Congestion information creation means for creating traffic information indicating the traffic jam situation by vehicles on the road based on traffic information created by the traffic information creation means,
The traffic control system according to any one of claims 1 to 3. The traffic information creating means creates travel history information indicating a travel lane of each vehicle as the traffic information,
The traffic jam information creating means creates traffic jam information including information indicating a traffic jam situation for each lane based on the travel history information.
The traffic control system according to claim 4. The traffic information creating means creates travel history information including information indicating the acceleration / deceleration status of each vehicle as information on the traffic status,
Based on the travel history information, the traffic jam information creating means generates traffic jam information including any one additional information of a traffic jam extension status, a traffic jam resolution prediction, or a frequency status of acceleration / deceleration of each vehicle in a traffic jam section. create,
The traffic control system according to any one of claims 4 and 5. Furthermore, it has traffic information prediction means for predicting traffic conditions on future roads based on the traffic information created by the traffic information creation means,
The traffic control system according to any one of claims 1 to 6. The traffic information prediction function predicts the traffic volume flowing into the road and the traffic volume flowing out from the road based on the travel history information, and predicts the future traffic volume on the road.
The traffic control system according to claim 7. Further, simulating means for simulating the behavior of each vehicle based on the traffic information created by the traffic information creating means and the traffic situation predicted by the traffic situation predicting means;
A traffic jam prediction means for predicting a future traffic jam situation based on the behavior of the vehicle simulated by the simulation means,
The traffic control system according to claim 7. The simulation means further simulates the behavior of the vehicle in a state in which the lane is closed when information indicating lane closure is input as the control information.
Predicting a traffic jam situation associated with closing of the lane based on the behavior of the vehicle simulated by the simulating means;
The traffic control system according to claim 9. A traffic control system information providing method for traffic control on a road,
Obtain probe information from individual vehicles,
Create travel history information that shows the travel history of each vehicle based on the probe information acquired from each vehicle,
Create traffic information indicating traffic conditions on the road based on control information on traffic control including information acquired from equipment installed on the roadside and travel history information of the created individual vehicles,
Providing the created traffic information,
Information providing method of traffic control system.

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