JP2008282275A - Driving support system and driving support device - Google Patents

Abstract

To provide a driving support system for improving a driver's awareness of smooth traffic using a traffic flow simulation result.
A driving support system 100 includes a traffic information acquisition unit C10 that acquires traffic information, a traffic flow simulation unit C11 that executes a traffic flow simulation based on the traffic information acquired by the traffic information acquisition unit C10, and a traffic flow Based on the simulation result of the traffic flow by the simulation means C11, recommended driving content deriving means C12 for deriving recommended driving content for realizing smooth traffic, and driving according to the recommended driving content derived by the recommended driving content deriving means C12 Driving support means E13.
[Selection] Figure 1

Description

  The present invention relates to a driving support system and a driving support device, and more particularly, to a driving support system and a driving support device that can raise a driver's awareness of smooth traffic.

  Conventionally, a static potential field that indicates the influence of an external factor that does not change over time that affects the driving of the vehicle and a dynamic potential that indicates the influence of an external factor that changes over time that affects the driving of the vehicle. 2. Description of the Related Art A traffic flow simulation system that simulates a traffic flow while calculating the direction and magnitude of acceleration when the vehicle is stopped and running based on the field is known (see, for example, Patent Document 1).

This traffic flow simulation system can simulate traffic flow easily and in detail without using a complicated model, and can simulate more realistic traffic flow while reflecting sudden events.
Japanese Patent Laid-Open No. 2004-258889

  However, Patent Document 1 discloses in detail a traffic flow simulation method, but does not disclose a method of using a traffic flow simulation result.

  In view of the above-described points, an object of the present invention is to provide a driving support system and a driving support device that improve a driver's awareness of smooth traffic using a traffic flow simulation result.

  In order to achieve the above-described object, the driving support device according to the first aspect of the present invention is a driving that supports driving according to recommended driving content for realizing smooth traffic derived based on the traffic flow simulation result. It is provided with a support means.

  The second invention is a driving support device according to the first invention, wherein a traffic information acquisition means for acquiring traffic information and a traffic flow simulation based on the traffic information acquired by the traffic information acquisition means are executed. And a recommended driving content deriving unit for deriving a recommended driving content for realizing smooth traffic based on a traffic flow simulation result by the traffic flow simulation unit. .

  Further, the third invention is the driving support device according to the first or second invention, wherein the recommended driving content is driving content to prevent occurrence or extension of traffic jam, driving content to avoid traffic jam, or It is characterized by including driving details that reduce or eliminate traffic congestion.

  The fourth invention is a driving support device according to any one of the first to third inventions, further comprising a contribution display means for displaying a contribution to smooth traffic.

  Further, the fifth invention is a driving support device according to the fourth invention, wherein the degree of coincidence calculation for calculating the degree of coincidence between the recommended driving content derived by the recommended driving content deriving means and the actual driving content. The contribution degree display means displays a contribution degree to smooth traffic based on the coincidence degree calculated by the coincidence degree calculation means.

  Further, the driving support system according to the sixth invention is a traffic information acquisition means for acquiring traffic information, a traffic flow simulation means for executing a traffic flow simulation based on the traffic information acquired by the traffic information acquisition means, Recommended driving content deriving means for deriving recommended driving contents for realizing smooth traffic based on the traffic flow simulation result by the traffic flow simulation means, and driving according to the recommended driving contents derived by the recommended driving content deriving means Driving support means for supporting the vehicle.

  With the above-described means, the present invention can provide a driving support system and a driving support device that improve the driver's awareness of smooth traffic using the traffic flow simulation result.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration example of a driving support system according to the present invention. A driving support system 100 includes a communication center C and a driving support device E. Information is exchanged between the driving support device E and the communication center C via wireless communication using a mobile phone frequency or road-to-vehicle communication using a specific low power wireless frequency.

  FIG. 2 is a block diagram showing a configuration example of the communication center C. The communication center C is installed in a management facility or the like, receives signals from terminals such as vehicle detectors installed on the road, and flows traffic. And the simulation result of the traffic flow is distributed to an unspecified number of driving support devices E or transmitted to a specific driving support device E, and includes a control unit C1, a communication unit C2 and storage unit C3.

  The management facility may be a VICS (Vehicle Information and Communication System) center. In this case, the communication center C considers VICS information including traffic jam information and traffic regulation information in the near future (for example, 30 (After minutes), a traffic flow simulation may be executed, and the traffic flow simulation result together with the VICS information may be distributed to the vehicle support device E mounted on each vehicle.

  The control unit C1 is a computer including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. For example, a traffic information acquisition unit C10, a traffic flow simulation unit C11, While storing a program corresponding to each of the recommended operation content deriving means C12 in the ROM, the CPU is caused to execute processing corresponding to each means.

  The communication unit C2 controls communication between the communication center C and a terminal such as a vehicle detector installed on the road, and communication between the communication center C and the driving support device E installed in each vehicle. For example, a signal from an ETC (Electronic Toll Collection) system installed at a toll booth, a magnetic ticket issuing machine or a magnetic ticket reader, etc. is received via a dedicated communication line. Or, receive signals from the N system (automatic car number reading system) installed in front of points where traffic congestion is likely to occur, such as uphill, zag or tunnel entrance, via a dedicated communication line. .

  In addition, the communication unit C2 mounts various information on each vehicle via VICS-FM broadcasting stations installed in various parts of the country, radio wave beacons or optical beacons installed on roads, or magnetic nails embedded in roads. Distributed to the driving assistance device E.

  The communication unit C2 may transmit specific information to the driving support device E mounted on a specific vehicle via the mobile phone frequency.

  The storage unit C3 is a device for storing information necessary for the communication center C to execute various calculations. For example, the storage unit C3 is a nonvolatile storage medium such as a hard disk or a DVD, and stores each road (each lane). Number of vehicles traveling, vehicle group speed, vehicle group density (indicated by the number of vehicles present in a given section), position of each vehicle (latitude, longitude, altitude), occurrence of accidents, road obstacles A traffic flow database (hereinafter referred to as “traffic flow DB”) in which traffic information such as presence / absence, weather conditions, event date and time, etc. is stored in time series is stored.

  Next, the traffic information acquisition means C10 and traffic flow simulation means C11 that the control unit C1 has will be described.

  The traffic information acquisition means C10 is means for acquiring traffic information. For example, the number of vehicles flowing into the highway or the number of vehicles flowing out from the highway via the communication unit C2, or at a predetermined point Information relating to vehicle traffic is collected in real time, and the collected traffic information is output to the traffic flow simulation means C11 described later.

  The traffic flow simulation means C11 is a means for executing a traffic flow simulation. For example, a micro simulation considering the movement of each vehicle based on the current traffic information collected by the traffic information acquisition means C10 and the vehicle group In combination with a macro simulation that takes into account movements, it simulates traffic flows in the near future and predicts the occurrence, extension, mitigation, or elimination of traffic congestion.

  Further, the traffic flow simulation unit C11 simulates a traffic flow in the near future based on the current traffic information collected by the traffic information acquisition unit C10 and the past traffic information stored in the traffic flow DB in the storage unit C3. It may be.

  The recommended driving content deriving unit C12 is a unit for deriving the recommended driving content for realizing smooth traffic. For example, the recommended driving content deriving unit C12 sequentially obtains traffic flow simulation results by giving the traffic flow simulation unit C11 the vehicle speed as a condition. However, the recommended recommended driving content is optimal for preventing the occurrence and extension of traffic jam at a predetermined point (in this case, the recommended speed, and the speed when the length of the traffic jam expected to occur in the simulation result is minimized. The recommended speed is derived for each predetermined section (for example, every 500 meters).

  Further, the recommended driving content deriving means C12 has an optimal recommended driving content (for example, a recommended lane that travels until reaching the traffic jam section. The recommended lane is a predetermined zone). And the recommended recommended driving content (for example, there is a recommended time zone for passing through the traffic jam section) to avoid the traffic jam that has already occurred. You may do it.

  Also, the recommended driving content deriving means C12 distributes information on the derived recommended driving content to the driving support device E mounted on a vehicle traveling in a predetermined geographical range or a specific vehicle via the communication unit C2. Or individually transmitted to the driving support device E mounted on the vehicle.

  As described above, the communication center C performs a traffic flow simulation while changing conditions such as the speed of the vehicle and the lane in which the vehicle travels, and derives the recommended driving content for realizing smooth traffic. Since the information on the recommended recommended driving content is distributed to the driving support device E mounted on an unspecified number of vehicles or transmitted to the driving support device E mounted on a specific vehicle, Stretching can be prevented, or traffic congestion can be eased or eliminated.

  FIG. 3 is a block diagram illustrating a configuration example of the driving support device E. The driving support device E is an in-vehicle device that receives information from the communication center C and supports driving of each vehicle based on the received information. For example, the control unit E1, the communication unit E2, the storage unit E3, the vehicle speed sensor E4, the positioning unit E5, the display unit E6, the voice output unit E7, and the operation control unit E8.

  The control unit E1, like the control unit C1 in the communication center C, is a computer including a CPU, a RAM, a ROM, and the like. For example, a driving support unit E13, a coincidence degree calculation unit E14, and a contribution degree display unit E15 described later. While storing the corresponding program in the ROM, the CPU is caused to execute processing corresponding to each means.

  The communication unit E2 is a device for controlling communication between the driving support device E and the communication center C. For example, a road through a magnetic nail embedded in a road or a transceiver installed on the side of the road Communication between the driving support device E and the communication center C is controlled by inter-vehicle communication.

  Further, the communication unit E2 may control communication between the driving support device E and the communication center C by wireless communication using a mobile phone frequency.

  Similar to the storage unit C3 in the communication center C, the storage unit E3 is a device for storing information necessary for the driving support device E to execute various calculations. For example, a nonvolatile storage medium such as a hard disk or a DVD The map information DB is stored.

  The vehicle speed sensor E4 is a sensor for detecting the traveling speed of the vehicle. For example, an MR (Magnetic Resistance) element reads a change in a magnetic field caused by a magnet attached to each wheel and rotating together with each wheel as a magnetic resistance. The rotational speed of the wheel and the speed of the vehicle are detected by taking out as a pulse signal proportional to the rotational speed.

  The positioning unit E5 is a device for measuring the position of the vehicle. For example, a GPS (Global Positioning System) receiver receives a GPS signal output from a GPS satellite via a GPS antenna, and the vehicle is based on the received signal. Measure the position. The measurement of the vehicle position by the positioning unit E5 may be any method such as single positioning or relative positioning (including interference positioning), but preferably relative positioning with high accuracy is used.

  At this time, the vehicle position may be corrected based on outputs from various sensors such as a steering angle sensor and a gyro sensor, and various information received via a beacon receiver or an FM multiplex receiver.

  The display unit E6 is a device for displaying various types of information. For example, the display unit E6 is a liquid crystal display, a projector, a HUD (Head-Up Display), or the like, and displays various types of information according to control signals output from the control unit E1. To display.

  The audio output unit E7 is a device for outputting various types of information as audio. For example, the audio output unit E7 is an in-vehicle speaker or the like, and outputs various types of information as audio according to a control signal output from the control unit E1.

  The driving control unit E8 is a device for automatically controlling the running state of the vehicle. For example, the driving control unit E8 is an accelerator control device, a brake control device, a shift position control device, a steering control device, or the like, and the control unit E1 outputs Limit the acceleration of the vehicle according to the control signal to be controlled, decelerate the vehicle by automatic control of the brake and shift position, or keep the distance between the vehicle and the preceding vehicle measured by the millimeter wave radar at a predetermined distance .

  Next, various units included in the control unit E1 will be described.

  The driving support means E13 is a means for supporting the driving of the vehicle equipped with the driving support device E. For example, the driving support information according to the information regarding the recommended driving content received from the communication center C via the communication unit E2. Is displayed on the display unit E6, the voice output unit E7 is output as a voice, or the driving control unit E8 is controlled according to the received driving support information, such as an accelerator, a brake, or a shift position. Supporting the realization of the driving content indicated by the information related to the recommended driving content.

  Here, the “driving support information” is information necessary for the driving support device E to support driving, for example, a recommended speed, a recommended lane, or a recommended route (for example, an instruction to leave a highway or a high speed Text information, image information, or voice guidance information, etc.) is included, and the accelerator and brakes are automatically controlled to realize the recommended driving content. Control amount etc. are included.

  For example, in order to realize the recommended speed, the driving support means E13 outputs a voice guidance such as “If you travel at 80 km / h, the time required to pass the traffic will be reduced for 30 minutes”, the current speed ( Even if the vehicle travels at a speed of 80 km / h or more, it is notified in an easy-to-understand manner that traffic congestion will eventually be extended, and the driver is encouraged to travel at a speed of 80 km / h.

  In addition, the driving support information may be information on a resting place or a resting time that is presented in order to avoid a traffic jam that occurs in the forward direction of the vehicle or to prevent a traffic jam in the forward direction of the vehicle. Good. This is because the number of vehicles passing through a predetermined point in a predetermined time zone is reduced by encouraging a break.

  The coincidence degree calculation means E14 is a means for calculating the coincidence degree between the recommended operation content and the actual operation content. For example, the recommended operation content received from the communication center C via the communication unit E2 is recommended. The average speed difference is calculated by continuously comparing the speed and the traveling speed of the vehicle detected by the vehicle speed sensor E4.

  In this case, the output (average speed difference) of the coincidence calculation means E14 is the average value (km / h) of the difference between the recommended speed updated every unit time (for example, 1 minute) and the actual traveling speed. It may be a value (%) obtained by dividing the average value by the recommended speed.

  Further, the coincidence calculation means E14 travels the vehicle derived from the recommended lane, which is the recommended driving content received from the communication center C via the communication unit E2, the map information DB of the storage unit E3, and the measurement result of the positioning unit E5. The deviation from the recommended lane is calculated by continuously comparing the tracks.

  In this case, the output (deviation) of the coincidence calculation means E14 is a value (%) obtained by dividing the distance that did not travel in the recommended lane by the distance traveled in the recommended lane.

  Note that the degree-of-match calculation means E14 may acquire the travel locus of the vehicle based on the communication with the magnetic nail and the output of the steering angle sensor.

  Also, the coincidence calculation means E14 feeds back the calculated coincidence (including the average speed difference or the deviation) to the communication center C so that the communication center C can execute a more detailed traffic flow simulation. Good.

  In this case, the communication center C re-executes the traffic flow simulation based on information fed back from the driving support device E mounted on a plurality of vehicles (including the degree of coincidence, average speed, etc.), and relates to the recommended driving content. The information is updated and redistributed or retransmitted to the driving support device E.

  The contribution degree display means E15 is a means for displaying the contribution degree to the realization of smooth traffic. For example, the degree of coincidence calculated by the coincidence degree calculation means E14 is displayed on the display unit E6.

  The contribution level display means E15 displays the information (including the degree of coincidence, average speed, etc.) on the degree of coincidence calculated by the degree of coincidence calculating means E14 graphically on the display unit E6 using a bar graph, a pie chart or the like. Alternatively, based on the information about the degree of coincidence calculated by the degree of coincidence calculation means E14, the effect of shortening the traffic distance by implementing recommended driving, the effect of shortening the driving time, the effect of reducing carbon dioxide emissions, or the fuel The saving effect and the like may be calculated, and the calculated various effects may be displayed on the display unit E6.

  As described above, since the driving support device E quantitatively displays the desired effect obtained by the implementation of the recommended driving on the display unit E6, the driver's awareness for realizing smooth traffic is increased, or the driver's satisfaction is achieved. Or increase awareness of driving manners and safe driving.

  Next, a driving assistance image that the driving assistance system 100 displays on the display unit E6 of the driving assistance device E will be described with reference to FIG. FIG. 4 is a diagram illustrating a configuration example of a driving support image displayed on the display unit E6, and the driving support image is an illustration image used for schematically explaining a situation that causes a traffic jam.

  First, FIG. 4A will be described. FIG. 4A is a driving support image showing a mechanism of traffic jam occurrence in the zigzag portion Z of the road, and traffic jam occurs in the zag zone Z as the vehicle passing through the zag zone Z and approaching the uphill decelerates. Represents the situation.

  The communication center C acquires traffic information from the N system or ETC system installed upstream (near) the zag portion Z by the traffic information acquisition unit C10, and the traffic flow simulation unit C11 performs the traffic flow simulation. When the occurrence of traffic jam in the zag portion Z is predicted, a notification signal for notifying the traffic jam prediction is delivered to the driving support device E mounted on the vehicle approaching the zag portion Z.

  The driving support device E that has received the notification signal causes the driving support means E13 to display the driving support image of FIG. 4A on the display unit E6, and also passes through the zag unit Z together with an alarm sound from the audio output unit E7. After that, the vehicle is decelerated on the uphill, and the traffic jam generation mechanism that the deceleration is linked to the following vehicle is voice-guided.

  Further, the communication center C calculates the recommended recommended driving content (for example, the recommended inter-vehicle distance and the recommended speed) to prevent the occurrence of traffic congestion in the zag portion Z by the recommended driving content deriving means C12. The information regarding the recommended driving content is distributed to the driving support device E mounted on the vehicle approaching the zigzag Z.

  The driving support device E that has received the information related to the recommended driving content displays, for example, the recommended inter-vehicle distance and the recommended speed on the display unit E6 by the driving support means E13 to call the driver's attention. The vehicle is caused to enter the zag portion Z while maintaining a predetermined traveling speed, and the influence of the vehicle that decelerates at the zag portion Z is not linked to the following vehicle.

  Note that the driving assistance device E may output a voice guidance such as “Be careful about deceleration on the next uphill” by the driving assistance means E13 before the vehicle approaches the uphill. A voice guidance such as “Please do not decelerate” may be output when the vehicle approaches an uphill.

  Next, FIG. 4B will be described. FIG. 4B is a driving support image showing the mechanism of congestion extension by formation of a vehicle group. Congestion is caused by a vehicle that frequently repeats rapid acceleration, rapid deceleration, or lane change, or a vehicle that travels at low speed in an overtaking lane. Represents the situation of stretching.

  The communication center C acquires traffic information from the N system and the ETC system by the traffic information acquisition means C10, and the traffic flow simulation means C11 simulates the traffic flow. Since overtaking will become more difficult as the density of the vehicle group increases, it is predicted that congestion will be extended by vehicles that frequently repeat rapid acceleration, rapid deceleration, or lane change, or vehicles that travel in the overtaking lane at low speed When it does, the notification signal which notifies the traffic congestion prediction to the driving assistance apparatus E mounted in each vehicle which forms those vehicle groups is delivered.

  The driving assistance apparatus E that has received the notification signal causes the driving assistance means E13 to display the driving assistance image of FIG. 4B on the display unit E6, and from the voice output unit E7 together with an alarm sound, sudden acceleration and sudden deceleration. Alternatively, a voice guidance is provided for a mechanism for extending a traffic jam in which the density of a vehicle group increases due to a vehicle that frequently changes lanes or a vehicle that travels at a low speed in an overtaking lane.

  In addition, the communication center C is optimal for preventing the extension of traffic congestion by a vehicle that frequently repeats rapid acceleration, sudden deceleration, or lane change, or a vehicle that travels in a passing lane at a low speed by the recommended operation content deriving unit C12. Calculate recommended driving details (for example, recommended inter-vehicle distance, recommended speed, and recommended lane), and distribute the calculated recommended driving details to the driving support device E mounted on each vehicle forming a plurality of vehicle groups. To do.

  The driving support device E that has received the recommended driving content displays the recommended inter-vehicle distance, the recommended speed, and the recommended lane on the display unit E6 by the driving support means E13, for example, to alert the driver. Prompt to drive the recommended lane at the recommended speed, and increase the number of vehicles that frequently repeat rapid acceleration, rapid deceleration or lane change, or vehicles that travel in the overtaking lane at a low speed, the congestion will be extended. To prevent.

  The communication center C is a driving support device mounted on a vehicle in which rapid acceleration, rapid deceleration, or lane change is repeated a predetermined number of times or more during a predetermined period, or a vehicle that travels in an overtaking lane at a speed lower than a predetermined speed for a predetermined period or longer. A voice guidance such as “Please drive at a constant speed” or “Please drive in the driving lane” may be output to E.

  In this case, the communication center C delivers various conditions (period, number of times, speed, etc.), and each of the driving support apparatuses E receives the various conditions received and the number of times of rapid acceleration, sudden deceleration or lane change by the own vehicle. Alternatively, it is determined whether or not to output the voice guidance from the voice output unit E7 based on the traveling speed of the own vehicle.

  Finally, FIG. 4C will be described. FIG. 4C is a diagram illustrating a mechanism of occurrence of traffic congestion due to a road obstacle H, and illustrates a situation in which traffic congestion occurs due to a large number of vehicles changing lanes immediately before the road obstacle H.

  The communication center C obtains traffic information from the N system or the ETC system by the traffic information obtaining means C10, and the traffic flow simulation means C11 performs a traffic flow simulation. Since a large number of vehicles change lanes immediately before the road obstacle H, approaching H, when the occurrence of traffic congestion due to the road obstacle H is predicted, the vehicle is mounted on each vehicle forming the vehicle group. A notification signal for notifying the traffic congestion prediction to the driving support device E is distributed.

  The driving assistance device E that has received the notification signal causes the driving assistance means E13 to display the driving assistance image in FIG. 4C on the display unit E6, and from the voice output unit E7, along with an alarm sound, Immediately before, voice guidance is given to the mechanism of the occurrence of traffic jams caused by a number of vehicles changing lanes.

  Further, the communication center C uses the recommended driving content deriving means C12 to recommend the recommended driving content (for example, the recommended inter-vehicle distance) to prevent the occurrence of traffic congestion due to a large number of vehicles that execute lane changes immediately before the obstacle H on the road. , The recommended speed and the recommended lane), and the calculated recommended driving content is distributed to the driving support device E mounted on each vehicle in the vehicle group.

  The driving assistance device E that has received the recommended driving content causes the driving assistance means E13 to display the recommended inter-vehicle distance, the recommended speed, and the recommended lane on the display unit E6, for example, to call the driver's attention and thereby recommend the inter-vehicle distance. In addition, by prompting the driver to drive the recommended lane at the recommended speed and executing the lane change in advance, it is possible to prevent a large number of vehicles from causing traffic congestion by changing the lane immediately before the obstacle H on the road.

  Note that the communication center C provides a driving assistance device E mounted on a vehicle traveling in the traveling lane so that a smooth lane change can be performed without reducing the average speed of the vehicle group sufficiently before the road obstacle H. Please change the lane to the overtaking lane ”and output a voice guidance such as“ Increase the inter-vehicle distance ”to the driving support device E installed in the vehicle traveling in the overtaking lane. May be.

  With the above configuration, the driving support system 100 knows the driving content that prevents the occurrence or extension of the traffic jam, the driving content that avoids the traffic jam, or the driving content that reduces or eliminates the traffic jam and the reason for recommending the driving content. Since it is easily communicated to the driver, the driver's awareness of the smooth traffic can be improved.

  FIG. 5 is a block diagram illustrating a configuration example of the driving support apparatus according to the present invention. In the driving support apparatus F, the control unit F1 includes a traffic information acquisition unit F10, a traffic flow simulation unit F11, and a recommended driving content derivation unit F12. Although it differs from the driving assistance apparatus E (refer FIG. 3) in the point provided, it is common with the driving assistance apparatus E in another point.

  With this configuration, the driving support device F can derive the recommended driving contents without using the communication center C while collecting various traffic information independently. Even when information cannot be exchanged, it is possible to improve the driver's consciousness about the realization of smooth traffic while preventing the occurrence or extension of traffic jams, or easing or eliminating traffic jams.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the driving support system 100 causes the coincidence degree calculation means E14 to calculate the degree of coincidence between the recommended driving content and the actual driving content of the own vehicle, and the contribution degree display means E15 determines the degree of the own vehicle. While displaying the degree of coincidence on the display unit E6, the driver's awareness for smooth traffic is improved, but information on the degree of coincidence of other vehicles is acquired from the communication center C, the average degree of coincidence of other vehicles, the maximum of other vehicles The display unit E6 displays the degree of coincidence, the degree of coincidence ranking of the own vehicle, the effect of shortening the congestion distance as a whole including the own vehicle and other vehicles, the effect of shortening the driving time, the effect of reducing carbon dioxide, or the effect of saving fuel. You may make it display.

  This is to further improve the driver's awareness of smooth traffic by displaying information on the degree of coincidence of other vehicles.

  Further, in the above-described embodiment, the driving support system 100 schematically explains a situation in which a traffic jam occurs while adopting an illustration image as a driving support image. However, the actual number of vehicles traveling in the zag portion Z, the vehicle group The situation that causes traffic congestion quantitatively and in detail may be described using an image including the actual density of the vehicle, the actual number of vehicles forming the vehicle group, the position on the map on which the vehicle group is formed, and the like. .

It is a block diagram which shows the structural example of the driving assistance system which concerns on this invention. It is a block diagram which shows the structural example of a communication center. It is a block diagram (the 1) which shows the example of composition of a driving support device. It is a figure which shows the structural example of a driving assistance image. It is a block diagram (the 2) which shows the structural example of a driving assistance device.

Explanation of symbols

100 Driving support system C Communication center C1, E1, F1 Control unit C2, E2, F2 Communication unit C3, E3, F3 Storage unit C10, F10 Traffic information acquisition means C11, F11 Traffic flow simulation means C12, F12 Recommended operation content derivation means E, F Driving support device E4, F4 Vehicle speed sensor E5, F5 Positioning unit E6, F6 Display unit E7, F7 Audio output unit E8, F8 Driving control unit E13, F13 Driving support unit E14, F14 Matching degree calculation unit E15, F15 Contribution Degree display means H Obstacle on the road Z Zag

Claims (6)

Comprising driving support means for supporting driving along recommended driving contents for realizing smooth traffic derived based on the simulation result of traffic flow;
A driving support device characterized by that. Traffic information acquisition means for acquiring traffic information;
Traffic flow simulation means for executing traffic flow simulation based on the traffic information acquired by the traffic information acquisition means;
Recommended driving content deriving means for deriving recommended driving content for realizing smooth traffic based on the traffic flow simulation result by the traffic flow simulation means;
The driving support device according to claim 1, further comprising: The recommended driving content includes driving content for preventing occurrence or extension of traffic jams, driving content for avoiding traffic jams, or driving content for reducing or eliminating traffic jams,
The driving assistance apparatus according to claim 1 or 2, wherein A contribution display means for displaying a contribution to smooth traffic;
The driving support device according to any one of claims 1 to 3, wherein A degree of coincidence calculating means for calculating a degree of coincidence between the recommended driving content derived by the recommended driving content deriving unit and the actual driving content;
The contribution display means displays a contribution to smooth traffic based on the coincidence calculated by the coincidence calculation means;
The driving support device according to claim 4, wherein Traffic information acquisition means for acquiring traffic information;
Traffic flow simulation means for executing traffic flow simulation based on the traffic information acquired by the traffic information acquisition means;
Recommended driving content deriving means for deriving recommended driving content for realizing smooth traffic based on the traffic flow simulation result by the traffic flow simulation means;
Driving support means for supporting driving along the recommended driving content derived by the recommended driving content deriving means;
A driving support system comprising:

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