JP2002269683A - Running support road system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a running support road system capable of avoiding the reduction of safety caused by a driver of an AHS(Advanced Cruise-Assist Highway System) vehicle putting too much confidence in running support service provided by the running support road system and paying excessive attention to the system under a traffic situation in which AHS vehicles and non-AHS vehicles are mixed and traffic is comparatively congested. SOLUTION: The running support road system is provided with a traffic situation detection means capable of deciding a degree of congestion of traffic on a road and a providing information control means capable of changing the contents of service provided by the system based on an output of the traffic situation detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving support road system for supporting safe driving of an automobile, and more particularly, to a driving support road system.
The present invention relates to a driving support road system that does not hinder traffic safety in a traffic situation in which AHS vehicles and non-AHS vehicles coexist, and a method for providing the information.

[0002]

2. Description of the Related Art Driving support road systems (AHS: Advanc)
The ed Cruise-assist Highway System) uses advanced communication and information technology to transfer information about vehicle travel between vehicles and information infrastructure equipment installed on the roadside to reduce traffic accidents and reduce traffic accidents. This is a system that facilitates traffic. In the vicinity of the road, various sensors and an information processing device for processing information obtained from the sensors are installed, and the behavior of the vehicle traveling on the surrounding road and the road surface condition are grasped by these sensors. The situation on the road obtained by the information processing device is transmitted in real time to the in-vehicle processing device mounted on the vehicle via the road-to-vehicle communication device. The in-vehicle processor is
Based on the information thus obtained, the driver is provided with information on obstacles in front of the road, warns of danger, performs automatic braking and steering operation, and performs automatic driving.

As described above, in the AHS, obstacle information on a road which is in front of a vehicle running on a road and which cannot be recognized or difficult to be recognized by the vehicle is detected by information infrastructure equipment installed on the road side. By providing the obtained information to vehicles and drivers using means such as a road-to-vehicle wireless device between roadside infrastructure equipment and vehicles, various advanced driving supports such as safe driving support are provided. The service is realized, but in order to receive such a driving support service, it is necessary to mount an AHS-compatible device on the vehicle side.

[0004] For this reason, especially in the early stage of AHS introduction, AH
During the period when S vehicles are not sufficiently popularized, vehicles equipped with AHS-compatible devices (hereinafter referred to as “AHS vehicles”) and vehicles not equipped with AHS-compatible devices (hereinafter “non- AHS vehicles ”) are expected to pass on the same road.

[0005]

In a relatively congested traffic situation such as a traffic jam, for example, a sufficient inter-vehicle distance required for safety is required as compared with a case where the road is not congested. It is considered that there is a tendency that the number of vehicles traveling without taking the number of vehicles increases or the number of vehicles performing sudden interruption or lane change increases. In addition, in a state where the road is congested in this way, for example, the drivers may communicate with each other by gestures, confirm safety, etc., and apply simple traffic rules, for example, giving up for smooth traffic. In many cases, driving beyond that is performed.

In such a situation, AHS is introduced, and AH is introduced.
When the S vehicle and the non-AHS vehicle run together, the number of vehicles that deviate from the normal driving behavior increases, especially in a highly congested traffic situation, as described above. It becomes very difficult to predict the behavior of a non-AHS vehicle.

[0007] For this reason, under a situation where the degree of congestion is relatively high and the AHS vehicle and the non-AHS vehicle need to travel together, the AHS
When automatic control such as an operation support service and an automatic driving service is performed by an AHS vehicle, if an AHS vehicle driver overtrusts the system, it may lead to a traffic accident, which may impair safety. Also, even when providing only information and warning services under relatively congested traffic conditions, the driver may pay excessive attention to the in-vehicle display device and neglect the surrounding traffic conditions. Conceivable.

[0008] Further, a range in which a driving support service is provided due to traffic congestion or the like (hereinafter, referred to as a "service providing range").
When the number of vehicles existing in the vehicle increases, the communication traffic in road-to-vehicle communication increases accordingly. On the other hand, the communication band that can be used for road-to-vehicle communication is fixed. Therefore, there is a possibility that a problem such as occurrence of a vehicle that cannot provide a service may occur.

[0009] The present invention solves the above-mentioned problems and provides an AHS
In relatively congested traffic situations where vehicles and non-AHS vehicles are mixed, AHS vehicle drivers may overtrust the driving support services provided by the driving support road system or pay too much attention to the system. It is an object of the present invention to provide a driving support road system capable of avoiding a decrease in safety due to the driving support system, and a method of providing the information.

[0010]

In order to achieve the above object, a driving support road system according to the present invention includes a sensor provided along a road on which a driving support service is provided, and a predetermined sensor based on information from the sensor. An information processing device capable of creating travel support information for assisting the travel of the vehicle traveling on the road by performing the above-described processing, a roadside communication device installed along the road, and a vehicle mounted on the vehicle. A road-to-vehicle communication device configured with a communication device; an on-vehicle processing device mounted on the vehicle for transmitting and receiving the traveling support information to and from the information processing device via the road-to-vehicle communication device; A traffic condition detecting means capable of detecting the degree of traffic congestion in the vehicle, and changing the content of a driving support service provided using the driving support information based on the output of the traffic condition detecting means. It is characterized in that it comprises an advertisement controller means capable of.

[0011] The traffic condition detecting means may be capable of detecting the degree of traffic congestion on the road based on information detected by the sensor and the information processing device.

Further, the traffic condition detecting means is installed near the road where at least one of the number of vehicles existing on the road, the average speed of the vehicle group, the headway distance, and the traffic density can be measured. A vehicle sensor may be provided, and the degree of traffic congestion on this road can be detected based on information measured by the vehicle sensor.

Further, the traffic condition detecting means can estimate the degree of traffic congestion on the road based on information on the amount of communication information such as the number of channels used in the road-to-vehicle communication device. Is also good.

Further, the provision information control means may be capable of changing the content of the driving support service provided based on the driving support information, based on the output of the traffic condition detecting means.

Further, the provision information control means may be capable of changing the output or the processing content of the information processing device based on the output of the traffic condition detection means.

Further, the provision information control means may be capable of changing the output or the processing content of the on-vehicle processing device based on the output of the traffic condition detection means.

Further, the provided information control means stops the service of the driving support information via the inter-vehicle communication device on the basis of the output of the traffic condition detecting means, and provides the service to the road-to-vehicle communication device such as an information providing board. A service that does not depend on the service may be performed.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a driving support road system 1 according to a first embodiment of the present invention for providing an obstacle collision prevention support service in a curve portion with poor visibility. FIG. 2 shows a schematic configuration of a driving support road system 1 for providing an obstacle collision prevention support service. In addition, the obstacle collision prevention support service of the driving support road system is a driving support service that is performed to prevent a rear-end collision with an obstacle such as a broken down vehicle, a low-speed vehicle, a falling object, etc. stopped at a poor visibility part. .

The driving support road system 1 shown in FIG. 1 includes a range (hereinafter, referred to as a driving support service) on a road 10 including a poor visibility part 11 which is a curve part having poor visibility.
A road condition grasping device 22, a road condition grasping device 24, and an information processing device 20 capable of processing information obtained by these devices; Traffic condition detecting means 28 capable of detecting the degree of congestion of traffic on the road 10, and information on driving support of the vehicle and contents of the driving support service provided by the driving support road system based on the output of the traffic condition detecting means 28 Information control means 30 that can change the
A road-vehicle communication device 26 including an information display board 32, a base marker 34, a roadside communication device 26a, and an on-vehicle communication device 26b mounted on the AHS vehicle 50;
It is composed of an in-vehicle processing device shown in FIG.

The road condition grasping device 22 includes at least one or more sensors such as a visible camera, an infrared camera, and a millimeter wave sensor installed along the road 10, and an image for processing image signals input from these sensors. The vehicle 5 in the sensor measurement range on the road 10
A function to measure, track, and manage the location and speed of zero here,
A function of extracting and managing obstacles 60 such as vehicles stopped on the road 10, low-speed vehicles, and falling objects from the measured data,
The information of the position, speed and obstacle of the vehicle is stored in the information processing device 2.
It has the function of sending to 0.

Further, the road surface condition grasping device 24
At least one sensor installed along the route, for example, a radioradiometer sensor, a laser radar sensor, or a distributed road surface condition detection device using an optical fiber, and processing the input from these sensors to dry the road surface A road surface condition detection function that can measure information about the road surface condition, such as the road surface condition estimating device that can estimate the state of It has a function of transmitting collected data to the information processing device 20, and the like.

On the other hand, the information processing device 20 has a function of collecting information output from the road condition grasping device 22 and the road surface condition grasping device 24, and from these data, the AHS vehicle 50 traveling on the road 10 and the non-AHS vehicle 70 And a function of extracting information such as the position and speed of the obstacle 60 such as a stopped vehicle, a low-speed vehicle, a falling object, and a road surface condition, and performing a predetermined process based on the obtained information to support traveling in a predetermined format. A function of creating information, a function of transmitting the created driving support information via the road-to-vehicle communication device 26 and the information display board 32, and further reading road alignment data of a road providing a service to create and transmit road alignment information It has a function to perform operation management of the system. The information processing device 20 is connected via a communication line to an AHS center device 100 having an operation management and a monitoring function of the information processing device 20 as shown in FIG. Various constants and parameters necessary for providing the driving support service can be read.

As shown in FIG. 2, the road-to-vehicle communication device 26 includes a road-side communication device 26a installed on the road and a vehicle-mounted communication device 26b mounted on the vehicle. It has a function of performing communication between the running AHS vehicle 50 and the information processing device 20, and transmits information such as obstacle information, road surface condition information, and road shape information provided by the information processing device 20 to the in-vehicle processing device. Can be sent. In addition, the roadside communication device has a broadcast communication function for simultaneously transmitting information to all communicable vehicles existing within a communication range and an individual communication function for communicating only with a specific vehicle. The broadcast communication function is used to provide information common to vehicles and information on only the position of obstacles on the road, and a service in which the AHS vehicle 50 enters and exits the service providing range. When providing different information for each AHS vehicle, such as a service-out process and a relative position and a relative speed between an obstacle and an individual vehicle, communication can be performed using the individual communication function. In addition, using the individual communication function of the road-to-vehicle communication device 26, the AHS vehicle 50 may have a function of transmitting AHS vehicle information such as vehicle speed and position information and vehicle performance from the AHS vehicle 50 to the information processing device 20, Information processing device 20
However, a configuration may be adopted in which the driving support information is created based on the obtained AHS vehicle information and the driving support information is transmitted to the corresponding vehicle.

As shown in FIG. 2, the AHS vehicle 50 has
The in-vehicle communication device 26b and the in-vehicle processing device 52 described above are mounted, and the in-vehicle processing device 52 provides information to the driver by the in-vehicle display device 152 based on the information received through the road-vehicle communication device 26. It is configured to be able to perform operation support such as performing, warning of danger in traveling, or performing speed control by automatic control by the speed control device 160.

The information display board 32 is composed of a variable display board or the like installed near a road in the vicinity of the service providing range, and displays information related to the traveling of the vehicle based on the traveling support information created by the information processing device 20. By doing so, it is possible to provide a limited driving support service to a non-AHS vehicle 70 that does not have a device compatible with the AHS system, such as the vehicle-mounted communication device 26b and the vehicle-mounted processing device 52.

The base marker 34 is set on the road 10 and detected by a base marker detection sensor mounted on the vehicle as shown in FIG. Base point information can be provided.

The traffic condition detection means 28
0 and is configured to detect the degree of traffic congestion on the road 10 from information such as the number of vehicles on the road 10 and the average speed of the vehicle group obtained by the information processing device 20. ing. Further, the provided information control means 30
Based on the detection result of the traffic condition detecting means 28, the road 10
The content of the driving support service provided by the driving support road system 1 can be changed.

Next, the operation of the driving support road system according to the present embodiment configured as described above will be described.

The road condition grasping device 22 captures an image of a detection range on the road with a visible camera and an infrared camera installed along the road 10 in the service information provision range,
The images input from each camera sensor are processed by the image processing device at predetermined intervals, so that the position and speed of the vehicle existing within the camera sensor detection range can be detected in real time, and the falling objects on the road can be detected. The road condition data is created by extracting an obstacle 60 such as a vehicle, a stopped vehicle, a low-speed vehicle, and the like.

Further, the road surface condition grasping device 24 detects the condition of dryness, wetness, water film, etc. on the same road 10 relating to slipperiness on the road surface at predetermined intervals to create road surface condition data.

As shown in FIG. 2, the information processing device 20
AH that performs operation management and status monitoring of the information processing device 20
The information processing device 2 is connected to the S center device 100 and
0 When the driving support service is started after start-up or when necessary, road alignment information indicating the road alignment of the service providing range, information regarding system constants such as sensor arrangement positions and base marker positions, and driving support services such as obstacle determination conditions. It is configured such that parameter information and the like necessary for the system and the system can be downloaded from the AHS center device 100 and used. Then, the information processing device 20
Contains the information necessary for these road alignment information and systems,
A plurality of road condition grasping devices 2 collected at a predetermined cycle
Based on the road condition data detected by the second and the road condition data detected by the road condition grasping device 24, the driving support information such as the road condition information and the road condition information necessary for the driving support service in the service providing range is created. I do. At this time, the information processing device 20 includes not only the driving support information to be transmitted to the AHS vehicle 50 but also the non-A
An information display panel 3 installed near the road 10 for providing information on obstacles 60 and road surface conditions on the road to the HS vehicle 70.
2 is also created.

On the other hand, as shown in FIG. 3, an AHS vehicle 50 traveling on the road 10 and desiring to provide the AHS service approaches the service providing area shown by a shaded portion in the figure, and When passing through the vicinity of the base point marker 34 installed at the point (point A in FIG. 3), the service target AHS
The base marker 34 is detected by the base marker detection sensor 154 mounted on the vehicle 50, and the base marker detection sensor 1
The on-vehicle processor 52 monitoring the output from the
It detects that it has entered the service providing range of S. AH
FIG. 3 in which the S vehicle 50 is within the communication range of the road-to-vehicle communication device 26
When traveling to the point B in the middle, the in-vehicle processing device 52 performs wireless communication using the in-vehicle communication device 26b and the individual communication channel with the road-to-vehicle communication device 26a, which is an AHS infrastructure-side facility, and is provided by the AHS. In order to receive the driving support service, a service-in process for registering a vehicle ID or the like is performed. When the communication between the AHS vehicle 50 and the roadside infrastructure equipment is established in this way, the AHS vehicle 50 provides the road alignment information and various types of travel support information provided from the roadside infrastructure equipment via the broadcast wireless channel of the roadside communication device 26. Will be provided.

When there is an obstacle 60 such as a vehicle that has stopped due to a failure within the service providing range, the on-vehicle processing device 52 performs various operations based on the driving support information received via the road-to-vehicle communication device 26. Start driving support service.

First, when the distance between the AHS vehicle 50 and the obstacle 60 is sufficiently large (point C in FIG. 3), the on-vehicle processing device 52 emits an electronic sound to call attention, and displays on the on-vehicle display device 152 " By providing a display such as "there is an obstacle ahead," information on the obstacle 60 ahead is provided to the driver. This is an information providing service. The AHS vehicle 50 further advances (point D in FIG. 3), and the obstacle 60
Is shorter than the predetermined distance, the in-vehicle processing device 5
Reference numeral 2 gives an indication to the driver on the vehicle-mounted display device 152 such as "obstacle ahead! Danger" and sounds a warning sound. This is the alert service. Even if the on-vehicle processing device 52 gives an alarm, the driver does not decelerate or change lanes, and the on-vehicle processing device 52 predicts that the AHS vehicle 50 will collide with the obstacle 60 when the AHS vehicle 50 proceeds further (FIG. 3). (Point E in the middle), the in-vehicle processing device 52 uses the speed control device 160 to automatically perform vehicle control by emergency braking. This is the operation support service.

The AHS vehicle 50 is equipped with a device for measuring the position of the vehicle, such as a GPS device or an integrated range finder, or the state of the vehicle and the surroundings of the vehicle using sensors attached to various parts of the vehicle 50. When the means for detecting the state of the vehicle is installed, the in-vehicle processing device 52 transmits the position / speed and acceleration / deceleration state of the own vehicle to the roadside information processing device 20 through the individual communication channel of the road-to-vehicle communication device 26. It is also possible to transmit a steering wheel operation amount, turn signal information, information on a nearby vehicle, and the like. When the information processing device 20 receives such information, the information received from the in-vehicle processing device 52 as well as the road condition data and the road condition data detected by the infrastructure equipment such as the road condition grasping device 22 and the road condition grasping device 24. By taking into account the received information, it is possible to create more precise and detailed driving support information.

As described above, the AHS vehicle 50 is provided with the information providing service, the warning service, and the operation support service.
It is also conceivable to provide an automatic driving service for automatically driving the vehicle, but the information processing device 20 provides only the information providing service using the information display panel 32 to the non-AHS vehicle 70. The information processing device 20 creates travel support information for the information display board 32 based on the information of the road condition grasping device 22 and the road surface condition grasping device 24, and
2 can be displayed, for example, "There is an obstacle 200 m ahead".

As described above, in the driving support service in the driving support road system, the AHS vehicle and the non-AHS
Driving support services that can be received differ depending on the vehicle.
What kind of driving support service can be received also differs depending on the functions of 2. For example, AHS as described above
When the vehicle 50 is equipped with the speed control device 160, the operation support service can be provided. However, when the device for performing the driving support is not provided, only the information provision and the warning service can be received. Can not. In this way, if all vehicles traveling on the same road cannot receive the same service, in a traffic situation such as congestion where the distance between vehicles is not sufficiently large, the driving support service may not always provide safe driving. Cannot be guaranteed.

Now, let us consider a case where the number of vehicles traveling within the service providing range on the road 10 is large, and the AHS vehicle 50 and the non-AHS vehicle 70 are running in a mixed state and the traffic condition is relatively high. In actual traffic, when the road is congested, it is considered that many vehicles are traveling without keeping a sufficient inter-vehicle distance for safety. For example,
AHS vehicle 5 that runs ahead in the service information provision range
Immediately after 0, when the non-AHS vehicle is following the vehicle without opening a safe inter-vehicle distance, when the driving support service of the AHS vehicle 50 is activated and the vehicle automatically starts controlling,
If a subsequent non-AHS vehicle is late in noticing it, it may collide with the rear of the AHS vehicle 50.

Under congested traffic conditions, there are many vehicles that do not follow traffic rules, such as forcibly interrupting or suddenly changing lanes, and simple traffic rules, such as giving up for smooth traffic. In many cases, the operation exceeds the application of. In such a case, in many cases, drivers often try to communicate with each other by gestures or confirm safety, and in many cases, the behavior can be predicted by observing the behavior of a vehicle such as a blinker. However, in the conventional driving support road system, although the behavior of the vehicle traveling within the service providing range can be grasped by the road condition grasping device 22, it is difficult to grasp even the communication between the drivers, and when the road is crowded. With excessive trust in driving assistance services,
If you do not pay attention to the surrounding traffic conditions, safety may not be ensured.

In the driving support road system according to the present embodiment, the number of vehicles and the average speed of vehicles in the service providing range are detected by the information processing device 20, and the information processing device 20 or the vehicle The traffic condition detecting means 28 connected to the processing device 52 detects the degree of traffic congestion in the service providing range. At this time, whether or not the number of vehicles existing in the service providing range detected by the information processing device 20 exceeds a predetermined number, and further, the average speed of a group of vehicles existing in the service providing range falls below the predetermined speed. The degree of traffic congestion on the road 10 is detected based on whether or not the vehicle is on the road. If the detected congestion degree of the traffic on the road 10 exceeds the predetermined congestion degree, the provided information control means 30 mounted on the vehicle side switches the on-board processing device 52
In response to this, the driving support service provided by the vehicle-mounted processing device 52 is stopped, and the driver is notified by displaying a message such as “information support service is stopped” together with an electronic sound on the vehicle-mounted display device 152. I have to.

In addition, when the congestion degree of the traffic on the road 10 exceeds a predetermined congestion degree, the provision information control means 30 provided in the roadside infrastructure equipment provides the driving support service provided by the information processing device 20 with the provision information control means 30. AHS instructed to change the contents, for example, newly entering the service provision section
The vehicle-to-vehicle communication device 26 transmits data of “running support service is stopped” via the road-to-vehicle communication device 26, or stops transmission of driving support data from the road-to-vehicle communication device 26 to the vehicle 50. The driving support service via 26 may be stopped and only the information providing service by the information display board 32 may be performed. However, at this time, if the non-AHS vehicle 70 does not exist in the service providing range or is less than the predetermined number, the provided information control means 30 sends the information processing device 20 or the on-vehicle processing device 52 a normal road-to-vehicle processing. An instruction is provided to provide an obstacle collision assistance service via a communication device.

In such a relatively congested traffic situation, the operation support service is stopped, and the content of the provided drive support service is displayed on the information display panel 32 from the detailed drive support service via the road-to-vehicle communication device. Switching to the simple driving support service that is used usually involves following a vehicle ahead in relatively congested traffic conditions. Is lower than when traffic is not congested,
This is because it is easy to avoid the obstacle 60, and it is often unnecessary to provide detailed information, and it is considered that there is no problem.

In a relatively congested traffic situation where AHS vehicles and non-AHS vehicles coexist, the AHS vehicle 50 is provided by changing the driving support service provided by the driving support road system to a limited service.
It is considered that the driver of the vehicle can overestimate the driving support road system or monitor the traffic situation in the vicinity, thereby suppressing the possibility of a decrease in driving safety.

In this embodiment, according to the output of the provided information control means 30, an obstacle collision prevention support service via the road-to-vehicle communication device is provided or the information sign board 32 is provided.
However, this does not limit the information providing method for providing the driving support information, and for example, the obstacle collision prevention support service via the road-to-vehicle communication device 26 is also continued. On the other hand, the information display device 152 mounted on the AHS vehicle 50 is transmitted from the information processing device 20 via the road-to-vehicle communication device 26 together with information for displaying a message for calling attention to surrounding traffic. Or you may. Further, in the obstacle collision prevention support service, for example, even when the road surface condition grasping device 24 breaks down, a limited service (degeneration service) excluding the road surface condition information can be performed.
6, the obstacle collision prevention support service may be continuously performed, and a signal indicating that the degeneration service is being performed may be transmitted from the information processing device 20 via the road-to-vehicle communication device 26.

Further, a signal is transmitted from the information processing device 20 via the road-to-vehicle communication device 26 to limit the on-board processing device 52 mounted on the AHS vehicle 50 from performing the operation support service and the automatic driving service. , AHS vehicle 50
May not perform the operation support service or the automatic driving service. In addition, an arbitrary method of providing information of the driving support service can be used as needed.

Further, in the present embodiment, the traffic condition detecting means 28 outputs
The traffic congestion degree on the zero is detected, but information such as the traffic volume and the average speed of a group of vehicles provided by a separately provided vehicle detector is used. Any method can be used as long as it can detect the traffic level of the traffic in the driving support service section, such as estimating the traffic congestion degree in the driving support service section by applying a traffic volume prediction method based on the traffic information.

The traffic condition detecting means 28 is connected to the information processing device 20 or the road-to-vehicle communication device 26 to monitor the amount of communication information such as the number of communication channels used in the road-to-vehicle communication device. The configuration may be such that the degree of traffic congestion on the road 10 can be estimated based on the amount of communication information.

In this embodiment, the traffic condition detecting means 28 and the provision information control means 30 are connected to the roadside information processing device 20. However, the traffic condition detecting means 28 and the provision information are provided to the AHS vehicle 50. Either or both of the information control means 30 are mounted, and the in-vehicle processing device 5
2, the content of the driving support service may be changed.

In this embodiment, the case where the present invention is applied to the obstacle collision prevention support service of the driving support road system is shown, but this does not limit the contents of the driving support service provided to the vehicle or the driver. Instead, any driving support service may be used as long as it detects the degree of traffic congestion within the service providing range and provides the driving support service according to the degree of traffic congestion.

[0050]

As described above, AHS vehicles and non-AH vehicles
Under relatively congested traffic conditions in which S vehicles are mixed, the driver of the AHS vehicle overestimates the driving support road system by changing the driving support service provided by the driving support road system to a limited service. In addition, it is possible to provide a driving support road system and a method for providing information on the driving support system, which can suppress a risk of a decrease in driving safety by monitoring surrounding traffic conditions.

[Brief description of the drawings]

FIG. 1 is a diagram showing a driving support road system that provides an obstacle collision prevention support service in a poor visibility part.

FIG. 2 is a configuration diagram of an obstacle collision prevention support service device.

FIG. 3 is a diagram showing service contents and service provision timing of an obstacle collision prevention support service.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Driving support road system 10 Road 11 Poor visibility section 20 Information processing device 22 Road condition grasping device 24 Road surface condition grasping device 26a Roadside communication device 26b In-vehicle communication device 28 Traffic condition detecting means 30 Provided information control means 32 Information display board 34 Base marker Reference Signs List 50 AHS vehicle 60 Obstacle 70 Non-AHS vehicle 100 AHS center device 152 In-vehicle display device 154 Base marker detection sensor 156 Obstacle detection sensor 158 Own vehicle state detection sensor 160 Speed control device

[Procedure amendment]

[Submission date] April 11, 2001 (2001.4.1
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Added

[Correction contents]

[Title of the Invention] Driving support road system

Claims (8)

[Claims] (1) A sensor installed along a road and (b) a predetermined process is performed based on information from the sensor to generate driving support information relating to a driving support of a vehicle running on the road. An information processing device capable of performing
A road-to-vehicle communication device including a roadside communication device disposed along a road and an on-vehicle communication device mounted on a vehicle; (d)
An on-vehicle processing device mounted on a vehicle and capable of transmitting and receiving driving support information to and from the information processing device via the road-to-vehicle communication device; and (e) detecting a degree of traffic congestion on a road. And (f) provided information control means capable of changing the content of the driving support service provided using the driving support information based on the output of the traffic condition detecting means. Driving support road system characterized by the following. 2. (a) a sensor installed along the road; and (b) predetermined processing is performed based on information from the sensor to generate driving support information related to driving support of a vehicle traveling on the road. An information processing device capable of performing
A road-to-vehicle communication device including a roadside communication device disposed along a road and an on-vehicle communication device mounted on a vehicle; (d)
An in-vehicle processing device mounted on a vehicle and capable of transmitting and receiving driving support information to and from the information processing device via the road-to-vehicle communication device; and (e) the information processing device installed along a road, Information display device capable of displaying information related to driving support of a vehicle traveling on a road based on the driving support information obtained by the method, and (f) traffic condition detection capable of detecting the degree of traffic congestion on the road Means, and (g) provided information control means capable of changing the content of the driving support service provided using the driving support information based on the output of the traffic condition detecting means. Driving support road system. 3. The driving support road system according to claim 1, wherein the traffic condition detecting means can detect the degree of traffic congestion on the road based on the output of the information processing device. 4. The traffic condition detecting means includes a vehicle detector, and can detect a degree of traffic congestion on a road based on information obtained by the vehicle detector. Driving support road system as described. 5. The traffic condition detecting means detects the amount of communication information in the road-to-vehicle communication device, and can detect the degree of traffic congestion on the road based on the amount of communication information. 2. The driving support road system according to 2. 6. A driving support information relating to a driving support of a vehicle traveling on a road by performing a predetermined process based on (a) a sensor installed along a road and (b) information from the sensor. An information processing device capable of performing
A road-to-vehicle communication device including a roadside communication device disposed along a road and an on-vehicle communication device mounted on a vehicle; (d)
An on-vehicle processing device mounted on a vehicle and capable of transmitting and receiving driving support information to and from the information processing device via the road-to-vehicle communication device; and (e) detecting a degree of traffic congestion on a road. (F) provided information control means capable of changing the content of the driving support service provided using the driving support information based on the output of the traffic condition detecting means. In the driving support road system, an information providing method in the driving support road system, wherein an output of the information processing device is changed by an output of the traffic condition detecting means and the provision information control means. 7. (a) a sensor installed along the road; and (b) a predetermined process based on information from the sensor to generate driving support information related to driving support of a vehicle traveling on the road. An information processing device capable of performing
A road-to-vehicle communication device including a roadside communication device disposed along a road and an on-vehicle communication device mounted on a vehicle; (d)
An on-vehicle processing device mounted on a vehicle and capable of transmitting and receiving driving support information to and from the information processing device via the road-to-vehicle communication device; and (e) detecting a degree of traffic congestion on a road. (F) provided information control means capable of changing the content of the driving support service provided using the driving support information based on the output of the traffic condition detecting means. An information providing method in a driving support road system, wherein an output of the on-vehicle processing device is changed by an output of the traffic condition detecting means and the provision information control means. 8. A driving support information relating to a driving support of a vehicle running on a road by performing a predetermined process based on (a) a sensor installed along the road and (b) information from the sensor. An information processing device capable of performing
A road-to-vehicle communication device including a roadside communication device disposed along a road and an on-vehicle communication device mounted on a vehicle; (d)
An in-vehicle processing device mounted on a vehicle and capable of transmitting and receiving driving support information to and from the information processing device via the road-to-vehicle communication device; and (e) the information processing device installed along a road, Information display device capable of displaying information related to driving support of a vehicle traveling on a road based on the driving support information obtained by the method, and (f) traffic condition detection capable of detecting the degree of traffic congestion on the road Means, and (g) provided information control means capable of changing the content of the driving support service provided using the driving support information based on the output of the traffic condition detecting means. In the driving support road system, information is provided through the road-to-vehicle communication device by the output of the traffic condition detection means and the provision information control means, or the information display device is provided. Information providing method in the Cruise-Assist Highway System and determines whether to provide information had.