JP7373288B2 - Driving support information guidance system and driving support information distribution device - Google Patents

Description

The present invention relates to a driving support information guidance system and a driving support information distribution device that support driving of a vehicle.

Conventionally, road information obtained from map data such as navigation devices, traffic information obtained from centers, and various information related to vehicle driving such as current position specified by GPS etc. are acquired and used to provide guidance to drivers. Various technologies have been proposed for assisting drivers and even intervening in driving to ensure proper driving. Here, when a vehicle is driving on a road, information regarding a point where a peculiar behavior different from normal behavior occurs in the vehicle (hereinafter referred to as a singular point) is important information for other vehicles traveling in the vicinity. This can be information, and it is desirable to use it as a guide.

Furthermore, when providing guidance to a place where the driver should be careful, such as the above-mentioned singular point, it is very important at what timing the guidance is provided. For example, Japanese Patent Application Laid-open No. 2006-330833 states that when a vehicle approaches a dangerous place within 100 meters, it is determined whether the dangerous place is dangerous for the driver by considering the driver's physical information and driving history. Disclosed is a technology for determining whether the location is dangerous and providing guidance to the dangerous location if the location is determined to be dangerous.

Japanese Patent Application Publication No. 2006-330833 (pages 14-17)

Here, in Patent Document 1, guidance to the dangerous place is performed when the vehicle approaches the dangerous place within a predetermined distance (100 m). As a result, if a plurality of dangerous places exist along the traveling direction of the vehicle 101 as shown in FIG. There is a possibility that guidance regarding a second dangerous place 103 may be provided during or immediately after passing through the first dangerous place 102.

If such guidance is performed, a problem arises in that guidance to the second dangerous place 103 cannot be provided sufficiently. In particular, if the second dangerous place 103 is a place where the driver should be more careful than the first dangerous place 102, guidance to the dangerous place that really requires attention cannot be provided appropriately.

The present invention has been made to solve the above-mentioned conventional problems, and provides guidance regarding singular points at a timing corresponding to the distribution of singular points where unusual behavior occurs for vehicles traveling on the road. Accordingly, it is an object of the present invention to provide a driving support information guidance system and a driving support information distribution device that make it possible to provide guidance on places that a driver should be careful of at an appropriate timing.

In order to achieve the above object, a first driving support information guidance system according to the present invention includes a point collection means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on a road as a singular point, and distribution specifying means for specifying the distribution of the singular points on the road based on the location; guidance setting means for setting a timing for providing guidance regarding the singular points based on the identified distribution of the singular points; and the guidance setting means. guidance means for providing guidance regarding the singular point at a timing set by the distribution specifying means, the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and The frequency of the point is calculated, and the ratio of the frequency of each section to the total number of the singular points collected on the road is specified as the distribution of the singular points, and the guidance setting means Select a section from among the plurality of sections that serves as a reference for providing guidance regarding the singular point, and determine the timing when the vehicle reaches a point on the near side in the traveling direction by a reference distance with respect to the section that serves as the reference. If there is a section where the road shape is curved in the direction of travel ahead of the reference section, the guidance will be provided before the vehicle enters the section. The reference distance is set as follows.
In addition, "a point where a peculiar behavior occurs" is, for example, a point where the brake of the vehicle is applied by a predetermined amount or more, a point where the deceleration becomes more than a predetermined value, a point where the ABS (Antilock Brake System) is activated, This includes a point where the steering wheel is operated at a certain angle or more, a point where the angular velocity or angular acceleration becomes a predetermined speed or more, or a combination thereof.
Further, the second driving support information guidance system according to the present invention includes a point collection means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on a road as a singular point, and distribution specifying means for specifying the distribution of the peculiar points on the road; guidance setting means for setting the timing for providing guidance regarding the peculiar points based on the identified distribution of the peculiar points; guidance means for providing guidance regarding the singular points at specific timings, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and calculates the frequency of the singular points collected for each of the plurality of sections. and specifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means determines the ratio of the frequency of each section to the total number of the singular points collected on the road. If there is only one section where the value is greater than or equal to one threshold, the timing for providing guidance regarding the singular point is set based on that section.
Further, the third driving support information guidance system according to the present invention includes a point collection means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on a road as a singular point, and distribution specifying means for specifying the distribution of the peculiar points on the road; guidance setting means for setting the timing for providing guidance regarding the peculiar points based on the identified distribution of the peculiar points; guidance means for providing guidance regarding the singular points at specific timings, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and calculates the frequency of the singular points collected for each of the plurality of sections. and specifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means determines the ratio of the frequency of each section to the total number of the singular points collected on the road. 2 If there are multiple sections with the threshold value or more, and the distance between the plurality of applicable sections is a certain distance or more, guidance regarding the singular point is provided for each of the plurality of applicable sections based on the section. Set the timing to do this.
Further, the fourth driving support information guidance system according to the present invention includes a point collection means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on a road as a singular point, and distribution specifying means for specifying the distribution of the peculiar points on the road; guidance setting means for setting the timing for providing guidance regarding the peculiar points based on the identified distribution of the peculiar points; guidance means for providing guidance regarding the singular points at specific timings, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and calculates the frequency of the singular points collected for each of the plurality of sections. and specifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means determines the ratio of the frequency of each section to the total number of the singular points collected on the road. If there are multiple sections with 2 thresholds or more and the distance between the applicable sections is not a certain distance or more, the section closest to the front in the direction of travel among the multiple applicable sections is used as the reference. Then, the timing for providing guidance regarding the singular point is set.
Further, the fifth driving support information guidance system according to the present invention includes a point collection means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on a road as a singular point, and distribution specifying means for specifying the distribution of the peculiar points on the road; guidance setting means for setting the timing for providing guidance regarding the peculiar points based on the identified distribution of the peculiar points; guidance means for providing guidance regarding the singular points at specific timings, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and calculates the frequency of the singular points collected for each of the plurality of sections. and specifies the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means calculates the ratio of the frequency of each section to the total number of the singular points collected on the road, If there is a range that is equal to or greater than the third threshold, the timing for providing guidance regarding the singular point is set based on the section closest to the front in the traveling direction among the plurality of sections included in the range.

Further, the driving support information distribution device according to the present invention includes a point collecting means for collecting points where a peculiar behavior occurs with respect to a vehicle traveling on the road as a singular point, and distribution specifying means for specifying the distribution of singular points; guidance setting means for setting the timing for providing guidance regarding the singular points based on the identified distribution of the peculiar points; a guide distribution means for distributing information to a road, and the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, and calculates the frequency of the singular points collected for each of the plurality of sections; The ratio of the frequency of each section to the total number of the singular points collected on the road is specified as the distribution of the singular points, and the guidance setting means selects a frequency from among the plurality of sections based on the distribution of the singular points. Selecting a section that serves as a reference for providing guidance regarding the singular point, and setting the timing when the vehicle reaches a point on the near side in the traveling direction by a reference distance with respect to the reference section as the timing for providing guidance regarding the singular point. However, if there is a section where the road shape is curved in the direction of travel ahead of the reference section, the reference distance is set so that guidance is provided before the vehicle enters the section. do.

According to the first driving support information guidance system and driving support information distribution device according to the present invention having the above-mentioned configuration, at a timing corresponding to the distribution of peculiar points where a peculiar behavior occurs to a vehicle traveling on a road, By providing guidance regarding specific points, it becomes possible to provide guidance on places that the driver should be careful of at an appropriate timing. As a result, even when the vehicle travels in a section where a large number of singular points occur, it is possible to make the vehicle travel appropriately.
Further, according to the second driving support information guidance system according to the present invention, when there is only one section where peculiar points are concentrated and distributed, the driver is informed before passing through that section. It is possible to provide guidance regarding singular points.
Further, according to the third driving support information guide system of the present invention, especially when there are multiple sections in which peculiar points are concentrated and distributed, and each section is located far apart, each section is It is possible to provide guidance regarding the singular point to the driver before passing through.
Furthermore, according to the fourth driving support information guidance system according to the present invention, when there are a plurality of sections in which singular points are concentrated and distributed, and each section is located close to each other, the nearest Before passing through the section, it is possible to provide guidance regarding the singular point to the driver. Furthermore, it is possible to prevent guidance regarding singular points from being performed again before, during, or immediately after passing through a section where singular points are concentrated.
Furthermore, according to the fifth driving support information guidance system according to the present invention, even if a specific point exists over a certain range, guidance regarding the specific point is not repeatedly performed, and the vehicle can move to the specific point. It is possible to call attention to a singular point before passing through the range.

1 is a schematic configuration diagram showing a driving support information guide system according to the present embodiment. FIG. 1 is a block diagram showing the configuration of a driving support information guide system according to the present embodiment. It is a figure showing an example of probe information stored in probe information DB. FIG. 3 is a diagram showing an example of probe statistical information stored in a probe statistical information DB. FIG. 2 is a diagram illustrating an example in which links are divided into predetermined distance units. FIG. 2 is a block diagram schematically showing a control system of the navigation device according to the present embodiment. 3 is a flowchart of a probe information collection processing program according to the present embodiment. It is a flowchart of a support information statistical processing program concerning this embodiment. FIG. 3 is a diagram showing an example of the results of aggregation of singular points. FIG. 3 is a diagram showing an example of the distribution of singular points in a link. It is a figure showing an example of the setting method of a guidance reference point. It is a figure showing an example of the setting method of a guidance reference point. It is a figure showing an example of the setting method of a guidance reference point. It is a figure showing an example of the setting method of a guidance reference point. It is a figure showing an example of the setting method of a guidance reference point. It is a flowchart of the driving support information guidance processing program concerning this embodiment. It is a figure explaining the example of guidance regarding a peculiar point. It is a figure explaining the example of guidance regarding a peculiar point. FIG. 2 is a diagram illustrating problems in the prior art.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a driving support information guide system according to the present invention will be described in detail based on an embodiment with reference to the drawings. First, a schematic configuration of a driving support information guide system 1 according to the present embodiment will be described using FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram showing a driving support information guide system 1 according to the present embodiment. FIG. 2 is a block diagram showing the configuration of the driving support information guide system 1 according to this embodiment.

As shown in FIG. 1, a driving support information guidance system 1 according to the present embodiment includes a server device (driving support information distribution device) 3 provided in a probe center 2, and a communication (guidance) terminal mounted on a vehicle 4. It basically has a navigation device 5. Further, the server device 3 and the navigation device 5 are configured to be able to send and receive electronic data to and from each other via a communication network 6. Note that instead of the navigation device 5, for example, a mobile phone, a smartphone, a tablet terminal, or a personal computer may be used.

Here, the driving support information guide system 1 according to the present embodiment constitutes a so-called probe car system. Here, the probe car system is a system that collects information using the vehicle 4 as a sensor. Specifically, the vehicle 4 transmits speed data as well as operating status of each system such as steering operation and shift position together with GPS position information to the probe center 2 via a communication device installed in the vehicle 4 in advance. A system that reuses the collected data as various information on the center side.

The server device 3 included in the probe center 2 appropriately collects and accumulates probe information (material information) including the current time and travel information from each vehicle 4 traveling across the country, and also uses the accumulated probe information to It generates various types of support information (for example, information on points and sections to be careful about when driving, accident information, traffic jam information, travel time, etc.), and distributes the generated support information to the navigation device 5. This is an information management server that performs various types of processing. In particular, in this embodiment, the server device 3 collects from each vehicle 4 the history (specifically, the position coordinates of the singular point) of a point where a peculiar behavior has occurred with respect to the vehicle 4 (hereinafter referred to as a singular point). , create statistical data regarding the distribution of singular points based on each piece of information collected. Further, from the created statistical data, a guidance reference point is set as a reference for the timing of providing guidance regarding the singular point, and is distributed to the vehicle 4.

On the other hand, the navigation device 5 is installed in the vehicle 4 and displays a map around the vehicle's location based on the stored map data, displays the current location of the vehicle on a map image, and displays the current location of the vehicle on a map image. This is an in-vehicle device that guides you along the route. The navigation device 5 also provides guidance regarding singular points at a timing based on the guidance reference point received from the server device 3. Note that details of the navigation device 5 will be described later.

The communication network 6 includes a large number of base stations located throughout the country and communication companies that manage and control each base station, and the base stations and communication companies are connected to each other by wire (optical fiber, ISDN, etc.) or wirelessly. It is configured by connecting. Here, the base station has a transceiver (transceiver) and an antenna for communicating with the navigation device 5. While the base station performs wireless communication between communication companies, it serves as the terminal end of the communication network 6 and relays communication between the navigation device 5 within the radio wave range (cell) of the base station and the server device 3. have a role to play.

Next, the configuration of the server device 3 that constitutes the driving support information guide system 1 will be explained in more detail using FIG. 2.

As shown in FIG. 2, the server device 3 basically includes a server control ECU 11, a probe information DB 12 as an information recording means connected to the server control ECU 11, a probe statistical information DB 13, and a center communication device 14. ing.

The server control ECU 11 (electronic control unit) is an electronic control unit that controls the entire server device 3, and is used by the CPU 21 as an arithmetic unit and a control device, and as a working memory when the CPU 21 performs various arithmetic processes. In addition to control programs, a ROM 23 in which a probe information collection processing program (see FIG. 7), a support information statistical processing program (see FIG. 8), etc., which will be described later, is recorded, and a flash memory for storing programs read from the ROM 23. It is equipped with an internal storage device such as a memory 24. Note that the server control ECU 11 constitutes various means as processing algorithms together with the ECU of the navigation device 5, which will be described later. For example, the point collection means collects points where unusual behavior occurs for vehicles traveling on the road as singular points. The distribution identifying means identifies the distribution of singular points on the road based on the collected singular points. The guidance setting means sets the timing for providing guidance regarding the unique points based on the distribution of the identified unique points. The guidance distribution means distributes the timing set by the guidance setting means to the vehicle.

Further, the probe information DB 12 is a storage means that cumulatively stores probe information collected from each vehicle 4 traveling across the country. In this embodiment, the probe information collected from the vehicle 4 includes, in particular, (a) date and time, (b) the link on which the vehicle 4 travels, and (c) the traveling direction of the vehicle 4 (forward or reverse). , (d) the coordinates of the singular point where the vehicle exhibits unusual behavior. However, the probe information does not necessarily need to include all of the information regarding (a) to (d) above, and may be configured to include only information regarding (b) to (d), for example. In addition, "a point where a peculiar behavior occurs" is, for example, a point where the brake of a vehicle is applied by a predetermined amount or more, a point where deceleration exceeds a predetermined value, a point where an ABS (Antilock Brake System) is activated, This includes a point where the steering wheel is operated at a certain angle or more, a point where the angular velocity or angular acceleration becomes a predetermined speed or more, or a combination thereof. Note that the details of the behavior that occurred at the singular point (for example, sudden deceleration) may be included in the probe information.

FIG. 3 is a diagram showing an example of probe information stored in the probe information DB 12. As shown in FIG. 3, the probe information includes a vehicle ID that identifies the transmission source vehicle, information regarding the above (a) to (d), and the like. For example, the probe information shown in FIG. I remember that it showed some kind of behavior. Similarly, other probe information is also stored.

On the other hand, the probe statistical information DB 13 is a storage means that cumulatively stores probe statistical information (distribution information) generated by statistics on the probe information stored in the probe information DB 12. In particular, in this embodiment, based on the distribution of singular points derived by performing statistics on probe information, a guidance reference point that serves as a reference for the timing of providing guidance regarding the singular point is identified, and the position of the guidance reference point is probed. Generate as statistical information. Note that the details of the method for identifying the guide reference point will be described later.

FIG. 4 is a diagram showing an example of probe statistical information stored in the probe statistical information DB 13. As shown in Figure 4, the probe statistical information includes information that specifies the date and time when the statistics were performed, the link and traveling direction that includes the guidance reference point (that is, the link and traveling direction that provides guidance regarding the singular point), and the information of the guidance reference point. and information identifying the location. Note that the position of the guide reference point is basically specified by the ID of the section in which the link is divided into predetermined distance units (for example, 30 m units). Specifically, as shown in FIG. 5, the link is divided into predetermined distance units (for example, 30 m units) from the starting point in the forward direction, and the links are divided into "100001-0", "100001-1", "100001-2" in order from the starting point. Attach the ID of... For example, ID "100001-5" indicates a section from a point 150 m away from the starting point of link ID "100001" in the forward direction to a point 180 m away. If the position of the guidance reference point is "100001-5", the guidance reference point is a point 150 m away from the starting point of "100001-5", that is, the starting point of the link ID "100001" in the forward direction. show. Note that the position of the guide reference point may be specified using coordinates, distance from the link starting point, etc. instead of the above-mentioned ID. Further, a plurality of guide reference points may be set within one link.

The timing for providing guidance regarding the singular point is the timing when the vehicle reaches a predetermined reference distance (for example, 300 m or 700 m) from the guidance reference point. That is, there is a guidance reference point on the planned travel route of the vehicle, and guidance regarding the singular point is started at the timing when the vehicle reaches the reference distance from the guidance reference point. Note that the reference distance may be a fixed value, but in this embodiment, it is changed as appropriate depending on the road shape, etc., as described later.

Further, the center communication device 14 is a communication device for communicating with the vehicle 4 and an external traffic information center such as a VICS (Registered Trademark: Vehicle Information and Communication System) center via the network 15. In this embodiment, probe information and distribution information are transmitted and received to and from each vehicle 4 via the center communication device 14. It also obtains traffic information such as traffic jam information and accident information from an external traffic information center. However, the above traffic information may be specified by the server device 3 based on probe information and map information collected from each vehicle 4 instead of being acquired from an external server.

Next, a schematic configuration of the navigation device 5 mounted on the vehicle 4 will be described using FIG. 6. FIG. 6 is a block diagram showing the navigation device 5 according to this embodiment.

As shown in FIG. 6, the navigation device 5 according to the present embodiment includes a current position detection unit 31 that detects the current position of the vehicle in which the navigation device 5 is mounted, a data recording unit 32 in which various data are recorded, A navigation ECU 33 that performs various arithmetic processing based on input information, an operation unit 34 that accepts operations from the user, a liquid crystal display 35 that displays maps and traffic information around the vehicle to the user, and a route. It has a speaker 36 that outputs audio guidance regarding guidance, a DVD drive 37 that reads a DVD as a storage medium, and a communication module 38 that communicates with an information center such as the probe center 2 or the VICS center.

Below, each component included in the navigation device 5 will be explained in order.
The current position detection unit 31 includes a GPS 41, a vehicle speed sensor 42, a steering sensor 43, a gyro sensor 44, etc., and is capable of detecting the current vehicle position, direction, vehicle speed, current time, etc. . Here, in particular, the vehicle speed sensor 42 is a sensor for detecting the travel distance and vehicle speed of the vehicle, generates pulses according to the rotation of the drive wheels of the vehicle, and outputs the pulse signal to the navigation ECU 33. Then, the navigation ECU 33 calculates the rotation speed and travel distance of the drive wheels by counting the generated pulses. Note that it is not necessary for the navigation device 5 to include all of the above four types of sensors, and the navigation device 5 may be configured to include only one or more types of sensors.

In addition, the data recording unit 32 reads out a hard disk (not shown) as an external storage device and a recording medium, a map information DB 45, a driving history DB 46, a distribution information DB 47, a predetermined program, etc. recorded on the hard disk, and stores them in the hard disk. It is equipped with a recording head (not shown) which is a driver for writing predetermined data. Note that the data recording section 32 may be configured with a flash memory, a memory card, or an optical disk such as a CD or DVD instead of a hard disk. Alternatively, the map information DB 45, travel history DB 46, and distribution information DB 47 may be stored in an external server and acquired by the navigation device 5 through communication.

Here, the map information DB 45 includes, for example, link data related to roads (links), node data related to node points, search data used for processing related to searching and changing routes, facility data related to facilities, and maps for displaying maps. This is a storage means in which display data, intersection data regarding each intersection, search data for searching for a point, etc. are stored.

Further, the driving history DB 46 is a storage means that accumulates and stores driving information of the vehicle 4. Note that, in this embodiment, the coordinates of a singular point where a peculiar behavior occurs particularly for the vehicle are stored. In addition, examples of points where unusual behavior has occurred in the vehicle include points where the vehicle brakes are applied by a predetermined amount or more, points where deceleration exceeds a predetermined value, and points where the ABS (Antilock Brake System) is activated. This includes a point where the steering wheel is operated at a certain angle or more, a point where the angular velocity or angular acceleration becomes a predetermined speed or more, or a combination thereof. The travel information stored in the travel history DB 46 is transmitted to the server device 3 as probe information at any time.

Further, the distribution information DB 47 is a storage means in which distribution information (probe statistical information) distributed from the server device 3 is stored.

On the other hand, the navigation ECU (electronic control unit) 33 is an electronic control unit that controls the entire navigation device 5, and includes a CPU 51 as an arithmetic unit and a control device, and a working memory when the CPU 51 performs various arithmetic processes. In addition to the RAM 52 which stores route data etc. when a route is searched, and control programs, it also stores a probe information collection processing program (see Figure 7) and a driving support information guidance processing program (see Figure 7), which will be described later. 16), etc., and an internal storage device such as a flash memory 54 for storing programs read from the ROM 53. Note that the navigation ECU 33 constitutes various means as processing algorithms. For example, the guidance means provides guidance regarding the singular point at the timing set by the guidance setting means.

The operation unit 34 is operated when inputting a departure point as a travel start point and a destination as a travel end point, and is comprised of a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 33 performs control to execute various corresponding operations based on switch signals output by pressing each switch. Note that the operation section 34 can also be configured by a touch panel provided on the front surface of the liquid crystal display 35. Alternatively, it can be configured with a microphone and a voice recognition device.

The liquid crystal display 35 also displays map images including roads, traffic information, operation guidance, operation menus, key guidance, guidance information along the guidance route (planned route), news, weather forecast, time, email, and television. Programs, etc. are displayed. Furthermore, in this embodiment, particularly when the vehicle is traveling on a link where many singular points occur, guidance regarding the singular points is also displayed. Note that a HUD or HMD may be used instead of the liquid crystal display 35.

Further, the speaker 36 outputs audio guidance for guiding travel along a guide route (planned travel route) and traffic information based on instructions from the navigation ECU 33. Furthermore, in the present embodiment, particularly when the vehicle travels on a link where a large number of singular points occur, audio guidance regarding the singular points is also output.

Further, the DVD drive 37 is a drive that can read data recorded on recording media such as DVDs and CDs. Then, based on the read data, music and video are played back, and the map information DB 45 is updated. Note that a card slot for reading and writing a memory card may be provided in place of the DVD drive 37.

Further, the communication module 38 is a communication device for receiving traffic information, weather information, etc. transmitted from a traffic information center, such as a VICS center or other external center, and is, for example, a mobile phone or a DCM. It also includes a vehicle-to-vehicle communication device that communicates between vehicles and a road-to-vehicle communication device that communicates with a roadside device. It is also used to transmit and receive probe information and distribution information to and from the server device 3.

Next, a probe information collection processing program executed in the server device 3 and the navigation device 5 that constitute the driving support information guide system 1 having the above configuration will be explained based on FIG. 7. FIG. 7 is a flowchart of the probe information collection processing program according to this embodiment. Here, the probe information collection processing program is repeatedly executed at predetermined time intervals after the vehicle's ACC power supply (accessory power supply) is turned on, and the server device uses a singular point where a peculiar behavior occurs for the vehicle 4 as probe information. 3 is the program to be collected. Note that the programs shown in the flowcharts in FIGS. 7, 8, and 16 below are stored in the RAM 22 and ROM 23 included in the server device 3 or the RAM 52 and ROM 53 included in the navigation device 5, and are stored in the CPU 21 or It is executed by the CPU 51.

First, the probe information collection processing program executed in the navigation device 5 will be explained.
In step (hereinafter abbreviated as S) 1, the CPU 51 uses the detection results of various sensors such as the GPS 41 and the vehicle speed sensor 42 to obtain the current position, direction, current vehicle speed, etc. of the vehicle 4. The operating status of the brakes and ABS (Antilock Brake System) is also acquired from the vehicle control ECU and the like via CAN.

Next, in S2, the CPU 51 determines whether or not the vehicle 4 exhibits unusual behavior based on the information acquired in S1. Specifically, if the brakes are applied to a vehicle by a predetermined amount or more, if the deceleration exceeds a predetermined value, if the ABS (Antilock Brake System) is activated, or if the steering wheel is operated by a certain angle or more. , when the angular velocity or angular acceleration exceeds a predetermined velocity, or when they are combined, it is determined that the vehicle 4 exhibits a peculiar behavior.

If it is determined that the vehicle 4 exhibits a peculiar behavior (S2: YES), the process moves to S3. On the other hand, if it is determined that the vehicle 4 is not exhibiting any unusual behavior (S2: NO), the probe information collection processing program is ended.

In S3, the CPU 51 uses the current position detection unit 31 to obtain the position coordinates of a singular point, which is a point where a peculiar behavior has occurred. Furthermore, the link ID and traveling direction (forward or reverse) of the link on which the vehicle travels (the link that includes the singular point) are also acquired.

Subsequently, in S4, the CPU 51 transmits the information including the position coordinates of the singular point acquired in S3 to the server device 3 as probe information. Specifically, the information includes the "date and time when the vehicle exhibited unusual behavior," "vehicle ID that identifies the vehicle," "location coordinates of the unusual point," "vehicle's direction of travel," and "link on which the vehicle is traveling." link ID” is sent. Note that the content of the behavior of the vehicle that occurred at the singular point (for example, sudden deceleration, sudden turning, etc.) may also be included. Thereafter, the probe information collection processing program is ended.

Next, a probe information collection processing program executed in the server device 3 will be explained.
First, in S11, the CPU 21 determines whether probe information is transmitted from each vehicle 4 traveling across the country.

If it is determined that the probe information is to be transmitted (S11: YES), the transmitted probe information is received (S12). Then, the CPU 21 cumulatively stores the received probe information in the probe information DB 12 (S13).

On the other hand, if it is determined that the probe information is not transmitted (S11: NO), the probe information collection processing program is ended. The probe information received in S12 is information regarding the singular point where the vehicle behaved peculiarly, and includes the "date and time when the vehicle peculiarly behaved", "vehicle ID that identifies the own vehicle", It includes the "position coordinates of the singular point," the "vehicle traveling direction," and the "link ID of the link on which the vehicle travels" (see FIG. 3).

Next, the support information statistical processing program executed in the server device 3 constituting the driving support information guide system 1 will be explained based on FIG. 8. FIG. 8 is a flowchart of the support information statistical processing program according to this embodiment. Here, the support information statistical processing program is executed after a predetermined period of time (for example, 24 hours) has passed since the last time the program was executed, and identifies the distribution of singular points on the road based on the probe information transmitted from each vehicle 4. This is a program that sets a guidance reference point that serves as a reference for the timing of providing guidance regarding specific points, and distributes it to vehicles.

First, in S21, the CPU 21 selects, among the probe information currently stored in the probe information DB 12, abnormalities that occurred during a period (aggregation period) from the current moment (i.e., the point of time when statistics are performed) to a predetermined time (for example, 24 hours) before. Extract probe information related to a point. As shown in Figure 3, the probe information includes the "date and time when the vehicle exhibited unusual behavior," "vehicle ID that identifies the vehicle," "position coordinates of the singular point," and "vehicle's direction of travel." and "link ID of the link on which the vehicle travels." In particular, probe information whose "date and time when the vehicle exhibited unusual behavior" corresponds to a period from the current moment to a predetermined time period is extracted. Then, based on the extracted probe information, the number of times that unusual behavior occurred in each vehicle that traveled during the period from the current moment to a predetermined time ago, that is, the number of unusual points, is totaled for each link and for each direction of travel.

Here, FIG. 9 is an example of the aggregation results of singular points. As shown in Figure 9, for each link and each direction of travel (forward or reverse), the number of times that each vehicle that traveled during the period to be aggregated exhibits unusual behavior, that is, the total number of singular points, is calculated. has been done. Incidentally, the aggregation of singular points may be performed separately for each time period or day of the week.

Next, in S22, the CPU 21 particularly extracts links and traveling directions for which the total number of singular points is equal to or greater than a threshold value as "dangerous links and traveling directions" that require the driver's attention when driving. Note that the threshold value can be changed as appropriate depending on the length of the aggregation period, and is set to "20", for example. In the example shown in FIG. 9, the "reverse direction" of the link ID "100003" and the "forward direction" of the link ID "100005" are extracted as "dangerous links and traveling directions."

The following processes from S23 to S33 are executed in a loop for each dangerous link and traveling direction obtained in S22, and are repeated until the processing for all dangerous links and traveling directions extracted in S22 is completed. .

First, in S23, the CPU 21 divides the dangerous links into predetermined distance units (for example, 30 m units). Next, for each segmented section (hereinafter referred to as a link section), the number of times that a peculiar behavior occurs in each vehicle that has traveled in the link section, that is, the number of peculiar points included in the link section, is calculated. Then, the ratio of the number of peculiar points occurring in each link section to the total number of peculiar points occurring in the entire dangerous link to be processed and in the traveling direction is calculated.

In the following description, IDs such as "link ID-0", "link ID-1", "link ID-2", etc. are assigned to link sections in order from the starting point in the forward direction of the link. For example, ID "100001-5" indicates a link section from a point 150 m away from the starting point of link ID "100001" in the forward direction to a point 180 m away.

Here, FIG. 10 shows, as an example, the statistical results of the "forward direction" of the link ID "100005". The number of singular points occurring in the entire "forward direction" of the link ID "100005" is "25". Among them, the number of singular points that occurred in "100005-2" is "3", the number of singular points that occurred in "100005-6" is "14", and the number of singular points that occurred in "100005-9" is "8", and "0" for other link sections. As a result, the ratio of singular points in "100005-2" is "0.12", the ratio of singular points in "100005-6" is "0.56", and the ratio of singular points in "100005-9" is "0. .32'', and the ratio of singular points in other link sections is ``0''. Note that the ratio of singular points for each link section calculated in S23 above corresponds to the distribution of singular points on the road.

Thereafter, in S24, the CPU 21 refers to the ratio of singular points for each link section calculated in S23, and determines whether there is a link section in which the ratio of unusual points is 50% or more (first threshold). Note that in this embodiment, the first threshold value is 50%, but the value of the first threshold value can be changed as appropriate. The same applies to the second threshold value and the third threshold value, which will be described later.

If it is determined that there is a link section in which the ratio of singular points is 50% or more (S24: YES), the process moves to S25. Furthermore, link sections with a ratio of singular points of 50% or more are sections where unusual points are concentrated in dangerous links, and it is necessary to alert vehicles traveling in that section in advance. section. On the other hand, if it is determined that there is no link section in which the ratio of singular points is 50% or more (S24: NO), the process moves to S27.

In S25, the CPU 21 sets the starting point (the end point on the near side in the traveling direction) of the link section in which the proportion of singular points is determined to be 50% or more as the guide reference point. For example, in the example shown in FIG. 11, the ratio of singular points in the link section "100005-6" is 50% or more of the total, so the starting point of the link section "100005-6" is set as the guidance reference point X. . Note that the guidance reference point is a point that serves as a reference point when determining the timing to provide guidance regarding a singular point, and more specifically, the guidance reference point is a point that serves as a reference point when determining the timing to provide guidance regarding a singular point. Information regarding the location will begin. As a result, before the vehicle passes through the link section "100005-6" where there are many singular points, it is possible to provide guidance to the driver to warn him or her. The details of the guidance will be described later.

Thereafter, in S26, the CPU 21 stores the guidance reference point specified in S25 as probe statistical information (distribution information) in the probe statistical information DB 13 (see FIG. 4). For example, the probe statistical information includes information that specifies the date and time when statistics were performed, information that specifies the link and traveling direction that includes the guidance reference point (i.e., the link and traveling direction that provides guidance regarding the singular point), and information that specifies the position of the guidance reference point. including.

On the other hand, in S27, the CPU 21 refers to the proportion of singular points for each link section calculated in S23, and determines whether there are two or more link sections in which the proportion of singular points is 40% or more (second threshold). judge.

If it is determined that there are two or more link sections in which the proportion of singular points is 40% or more (S27: YES), the process moves to S28. In addition, link sections with a ratio of singular points of 40% or more are sections where unusual points are concentrated in dangerous links, and it is necessary to alert vehicles traveling in that section in advance. section. On the other hand, if it is determined that there are no two or more link sections in which the ratio of singular points is 40% or more (S27: NO), the process moves to S31. In this embodiment, the second threshold is set to 40%, so there are a maximum of two link sections in which the proportion of singular points is determined to be greater than or equal to the second threshold. %, there may be cases where there are three or more link sections in which the ratio of singular points is determined to be equal to or higher than the second threshold.

Furthermore, in S28, the CPU 21 calculates the distance between the link sections determined to have a ratio of singular points of 40% or more, and determines whether the distance between the link sections (more specifically, the distance between the starting points) is a predetermined distance or more. It is determined whether the host is far away (for example, 300 meters or more). It should be noted that the predetermined distance serving as the determination criterion in S28 can be set as appropriate based on, for example, the type of road.

If it is determined that the distance between the link sections in which the ratio of singular points is 40% or more is greater than or equal to the predetermined distance (S28: YES), the process moves to S30. On the other hand, if it is determined that the distance between link sections in which the proportion of singular points is 40% or more is less than the predetermined distance (S28: NO), the process moves to S29.

In S29, the CPU 21 sets the starting point (the end point on the near side in the traveling direction) of the link section closest to the front in the traveling direction among the link sections for which the ratio of singular points is determined to be 40% or more as the guide reference point. For example, in the example shown in FIG. 12, the ratio of singular points in link sections "100005-4" and "100005-9" is 40% or more of the total, and the distance between the link sections is a predetermined distance. Since it is less than 300 m, the starting point of the link section "100005-4" is set as the guide reference point X. As a result, it is possible to prevent guidance regarding the second link section "100005-9" from being provided immediately before, during, or immediately after the vehicle passes the first link section "100005-4". It becomes possible. Since the link section "100005-4" and the link section "100005-9" are located close to each other, if you provide guidance to the driver to warn the driver about the first link section "100005-4", It is also possible to call attention to the link section "100005-9".

Thereafter, the process moves to S26, and the guidance reference point specified in S29 is stored in the probe statistical information DB 13 as probe statistical information (distribution information).

On the other hand, in S30, the CPU 21 sets the starting point (the end point on the near side in the traveling direction) of each link section in which the proportion of singular points is determined to be 40% or more as a guide reference point. That is, if there are two link sections in which the ratio of singular points is determined to be 40% or more, two guide reference points are also set. For example, in the example shown in FIG. 13, the ratio of singular points in link sections "100005-4" and "100005-15" is 40% or more of the total, and the distance between the link sections is a predetermined distance. Since they are 300 meters or more apart, the starting point of link section "100005-4" and the starting point of "100005-15" are respectively set as the guide reference point X. As a result, before the vehicle passes through the link sections "100005-4" and "100005-15" in which a large number of singular points exist, it is possible to provide guidance to the driver to warn the respective drivers. In addition, since the link section "100005-4" and the link section "100005-15" are located far apart, the vehicle immediately before, during, or immediately after passing the first link section "100005-4", It is also possible to prevent guidance regarding the second link section "100005-15" from being provided.

Thereafter, the process moves to S26, and the guidance reference point specified in S29 or S30 is stored in the probe statistical information DB 13 as probe statistical information (distribution information).

Further, in S31, the CPU 21 refers to the ratio of singular points for each link section calculated in S23, and includes the link section with the highest ratio of singular points and the two link sections before and after the link section adjacent to the link section. It is determined whether there is a range in which the ratio of singular points is 50% or more (third threshold).

Then, if it is determined that the ratio of singular points including the link section with the highest ratio of singular points and the two link sections before and after the link section adjacent to the link section is 50% or more (S31: YES), The process moves to S32. In addition, the range where the ratio of singular points in five adjacent link sections is 50% or more in total is the range where singular points are concentrated in the dangerous link, and the range in which the singular points are concentrated is occurring in the dangerous link, and the range is This is the range that requires advance warning. On the other hand, if it is determined that the ratio of singular points including the link section with the highest proportion of singular points and the two link sections before and after the link section adjacent to the link section is less than 50% (S31: NO). Then, the process moves to S33. Note that in this embodiment, the link section with the highest proportion of singular points and the two link sections adjacent to the link section are targeted for determination. The target may be one link section before and after one, or a link section with the highest ratio of singular points and three or more link sections before and after that link section.

In S32, the CPU 21 sets the starting point (the end point on the near side in the traveling direction) of the link section closest to the front in the traveling direction among the corresponding link sections as the guide reference point. For example, in the example shown in FIG. 14, the link section "100005-6" is the link section with the highest proportion of singular points, and the singular points "100005-4 to 8" including the two link sections before and after it are the link section with the highest proportion of singular points. Since the ratio is 50% or more, the starting point of the link section "100005-4" which is closest to the front in the traveling direction is set as the guide reference point X. As a result, even if a singular point exists over a certain range, the guidance regarding the singular point will not be repeated, and the driver will be able to call attention to the singular point before the vehicle passes through that range. It becomes possible.

On the other hand, in S32, the CPU 21 selects the starting point of the link section that includes at least one singular point and is closest to the front in the travel direction among the dangerous link to be processed and each link section included in the travel direction. (end point) as the guidance reference point. For example, in the example shown in FIG. 15, the link section "100005-3" includes a singular point and is the link section furthest in the direction of travel, so the starting point of the link section "100005-3" is the guidance reference point. Set to X. As a result, even if singular points are dispersed throughout the link, guidance regarding the singular points is not repeatedly provided, and the singular point is detected at the timing before the vehicle first passes through the link section that includes the singular point. This makes it possible to call attention to the following.

Thereafter, the process moves to S26, and the guidance reference point specified in S32 or S33 is stored in the probe statistical information DB 13 as probe statistical information (distribution information).

Subsequently, in S34, the CPU 21 distributes the information regarding the guide reference point stored in the probe statistical information DB 13 to the vehicle 4 that has requested the distribution information. Note that the information may be distributed to all vehicles 4 that are in a communicable state regardless of whether or not there is a distribution request. Alternatively, the information may be distributed only to vehicles traveling around the guide reference point.

Incidentally, singular points include, for example, a point where the vehicle brake is applied by a predetermined amount or more, a point where deceleration exceeds a predetermined value, a point where ABS (Antilock Brake System) is activated, or a point where the steering wheel is operated at a certain angle or more. The guidance reference point may be set for each type of singular point. For example, only specific points that indicate sudden deceleration (points where the vehicle brakes are applied by a predetermined amount or more, points where deceleration exceeds a predetermined value, points where ABS (Antilock Brake System) is activated) are displayed. It is also possible to perform the processing from S21 onward and set a guidance reference point for providing cautionary guidance against sudden deceleration. Alternatively, the processing from S21 onward is performed only on specific points indicating that there has been a sharp turn (points where the steering wheel is operated at a certain angle or more, points where the angular velocity or angular acceleration becomes a predetermined speed or more), A guidance reference point may be set to provide cautionary guidance for sharp turns.

Next, a driving support information guidance processing program executed in the navigation device 5 constituting the driving support information guidance system 1 will be described based on FIG. 16. FIG. 16 is a flowchart of the driving support information guidance processing program according to this embodiment. Here, the driving support information guidance processing program is executed after the ACC power supply (accessory power supply) of the vehicle is turned on, and is based on the guidance reference point set in the above-mentioned support information statistical processing program (FIG. 8). This is a program that provides guidance regarding.

First, in the driving support information guidance processing program, the CPU 51 receives distribution information distributed from the server device 3 in S41. Note that the received distribution information is stored in the distribution information DB 47. The received distribution information also includes information for specifying the position of the guide reference point specified by the above-mentioned support information statistical processing program (FIG. 8).

Next, in S42, the CPU 51 acquires vehicle information regarding the vehicle 4. Here, the vehicle information acquired in S42 is information regarding the current position of the vehicle 4, the direction, and the scheduled travel route that the vehicle is scheduled to travel in the future. It should be noted that the scheduled travel route of the vehicle is a guide route if a guide route is set by the navigation device 5, and a road route if a guide route is not set.

Subsequently, in S43, the CPU 51 determines whether or not it is time to provide guidance regarding the singular point, based on the distribution information acquired in S41 and the vehicle information acquired in S42. Specifically, as shown in FIG. 17, there is a guidance reference point on the vehicle's planned travel route, and the guidance regarding the singular point is performed at the timing when the vehicle reaches the reference distance (for example, 300 m) from the guidance reference point. Timing.

Here, the reference distance may be a fixed value, but it is desirable to change it as appropriate depending on the road shape, etc. For example, as shown in FIG. 18, when the shape of the road on which the singular point is located is a curved shape, the length of the reference distance is set so that guidance regarding the singular point is provided before the vehicle enters the curve. This makes it possible to provide guidance at a time when there is less burden on the driver in operating the vehicle. Regardless of curves, if there is a section where the burden of vehicle operation on the driver is heavy, it is desirable to set the length of the reference distance so that guidance regarding unusual points is provided before entering such a section. .

If it is determined that it is time to provide guidance regarding the singular point (S43: YES), the process moves to S44. On the other hand, if it is determined that it is not the timing to provide guidance regarding the singular point (S43: NO), the travel support information guidance processing program is ended.

In S44, the CPU 51 provides guidance regarding the singular point. Specifically, it outputs a voice guidance saying "Please drive carefully" and displays the section where the peculiar points are distributed so that the driver can identify them on the map image displayed on the liquid crystal display 35. .

Note that the guidance regarding the singular point may include information about what kind of point the singular point is. For example, there is a distribution of unique points that indicate sudden deceleration (points where the vehicle brakes are applied by a predetermined amount or more, points where the deceleration exceeds a predetermined value, points where the ABS (Antilock Brake System) is activated). In this case, a warning may be provided to warn that sudden deceleration will occur.

As explained in detail above, the driving support information guidance system 1 and the server device 3 according to the present embodiment collect points where a peculiar behavior occurs for a vehicle traveling on a road as peculiar points (S12), and collect The distribution of singular points on the road is specified based on the identified singular points (S23), and the timing for providing guidance regarding the singular points is set based on the identified distribution of singular points (S25, S29, S30, S32, S33). Since the guidance regarding the singular point is provided at the set timing (S44), it becomes possible to provide guidance to the location where the driver should be careful at the appropriate timing. As a result, even when the vehicle travels in a section where a large number of singular points occur, it is possible to make the vehicle travel appropriately.

It should be noted that the present invention is not limited to the embodiments described above, and it goes without saying that various improvements and modifications can be made without departing from the gist of the present invention.
For example, in this embodiment, processing related to setting guidance reference points (S23 to S33) is performed for each link, but if singular points are distributed near connection points of links, connecting to the corresponding connection point is performed. Processing related to setting guidance reference points may be performed for a plurality of links. Thereby, even if singular points are distributed near the connection points of links, it is possible to set guide reference points at appropriate positions.

Furthermore, in this embodiment, guidance reference points are set for links and traveling directions where the total number of singular points is greater than or equal to the threshold, but for links and traveling directions where the total number of singular points is less than the threshold. A guide reference point may also be set.

In addition, in this embodiment, the ratio of singular points in each link section where the links are divided into predetermined distance units is specified as the distribution of singular points on the road (S23), but it is not the ratio of singular points in each link section. The frequency of singular points may be specified as the distribution of singular points on the road. Furthermore, standard deviation, variance, etc. may be specified as the distribution of singular points.

Further, in this embodiment, the guide reference point is the starting point of the link section, but the link section itself may be used as the guide reference point instead of the starting point of the link section.

Further, in this embodiment, the support information statistical processing program shown in FIG. 8 is executed by the server device 3, but it may be configured to be executed by the navigation device 5. Alternatively, a configuration may be adopted in which the server device 3 and the navigation device 5 each execute a part of the process. In addition, when the navigation device 5 executes the support information statistical processing program, it is desirable to acquire the point where a peculiar behavior occurs in another vehicle via the server device 3 or through vehicle-to-vehicle communication.

Moreover, instead of the navigation device 5, it is also possible to configure the driving support information and guidance system 1 with another device having a driving guidance function. For example, an on-vehicle device other than the navigation device 5, a mobile phone, a smartphone, a tablet terminal, a personal computer, etc. are possible.

Moreover, although the embodiment embodying the driving support information guidance system according to the present invention has been described above, the driving support information guidance system can also have the following configuration, and in that case, the following effects can be achieved. .

For example, the first configuration is as follows.
a point collecting means (21) for collecting points where a peculiar behavior occurs for a vehicle traveling on the road as singular points; and a distribution specifying means for specifying the distribution of the singular points on the road based on the collected singular points. (21); guidance setting means (21) for setting a timing for providing guidance regarding the singular point based on the identified distribution of the singular points; and guidance regarding the singular point at the timing set by the guidance setting means; the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, calculates the frequency of the singular points collected for each of the plurality of sections, and The ratio of the frequency of each section to the total number of the singular points collected on the road is specified as the distribution of the singular points, and the guidance setting means selects the number of sections from among the plurality of sections based on the distribution of the singular points. Select a section that serves as a reference for providing guidance regarding the singular point, and set the timing when the vehicle reaches a point on the near side in the traveling direction by a reference distance with respect to the reference section as the timing for providing guidance regarding the singular point. If there is a section in which the road has a curved shape on the near side in the direction of travel with respect to the reference section, the reference distance is set so that guidance is provided before the vehicle enters the section. .
According to the driving support information guidance system having the above configuration, by providing guidance regarding singular points at a timing corresponding to the distribution of singular points where unusual behavior occurs for vehicles traveling on the road, it is possible for the driver to be careful. It becomes possible to provide guidance to the desired location at the appropriate timing. As a result, even when the vehicle travels in a section where a large number of singular points occur, it is possible to make the vehicle travel appropriately.

Further, according to the driving support information guide system having the above configuration, it becomes possible to more accurately identify the distribution trend of points where a vehicle exhibits unusual behavior on a road.

Further, according to the driving support information guidance system having the above-mentioned configuration, it is possible to provide guidance regarding a peculiar point before the vehicle passes through a section where the driver should be careful.

Further, according to the driving support information guidance system having the above configuration, it is possible to provide guidance regarding a singular point at a timing that takes into account the burden of vehicle operation on the driver.

Further, according to the driving support information guidance system having the above configuration, it is possible to provide guidance regarding a singular point at a time when the driver is less burdened in operating the vehicle.

Further, the second configuration is as follows.
a point collecting means (21) for collecting points where a peculiar behavior occurs for a vehicle traveling on the road as singular points; and a distribution specifying means for specifying the distribution of the singular points on the road based on the collected singular points. (21); guidance setting means (21) for setting a timing for providing guidance regarding the singular point based on the identified distribution of the singular points; and guidance regarding the singular point at the timing set by the guidance setting means; the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, calculates the frequency of the singular points collected for each of the plurality of sections, and The guide setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road. If there is only one section where the value is equal to or greater than the threshold, the timing for providing guidance regarding the singular point is set based on that section.
According to the driving support information guidance system having the above configuration, especially when there is only one section in which peculiar points are concentrated, guidance regarding the peculiar points is provided to the driver before passing through that section. It is possible to do so.

Moreover, the third configuration is as follows.
a point collecting means (21) for collecting points where a peculiar behavior occurs for a vehicle traveling on the road as singular points; and a distribution specifying means for specifying the distribution of the singular points on the road based on the collected singular points. (21); guidance setting means (21) for setting a timing for providing guidance regarding the singular point based on the identified distribution of the singular points; and guidance regarding the singular point at the timing set by the guidance setting means; the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, calculates the frequency of the singular points collected for each of the plurality of sections, and The guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road. If there are multiple sections that are equal to or greater than the threshold and the distance between the multiple applicable sections is a certain distance or more, guidance regarding the singular point is provided for each of the multiple applicable sections based on the section. Set the timing.
According to the driving support information guidance system having the above configuration, when there are multiple sections where singular points are concentrated and distributed, and each section is located far apart, the driving support information guidance system It is possible to provide guidance to individuals regarding singular points.

Further, the fourth configuration is as follows.
a point collecting means (21) for collecting points where a peculiar behavior occurs for a vehicle traveling on the road as singular points; and a distribution specifying means for specifying the distribution of the singular points on the road based on the collected singular points. (21); guidance setting means (21) for setting a timing for providing guidance regarding the singular point based on the identified distribution of the singular points; and guidance regarding the singular point at the timing set by the guidance setting means; the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, calculates the frequency of the singular points collected for each of the plurality of sections, and The guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road. If there are multiple sections that exceed the threshold and the distance between the applicable sections is not a certain distance or more, the section closest to the front in the direction of travel among the multiple applicable sections is used as the reference. to set the timing for providing guidance regarding the singular point.
According to the driving support information guidance system having the above configuration, when there are multiple sections where singular points are concentrated and distributed, and each section is located close to each other, before passing through the nearest section, , it is possible to provide guidance regarding specific points to the driver. Furthermore, it is possible to prevent guidance regarding singular points from being performed again before, during, or immediately after passing through a section where singular points are concentrated.

Further, the fifth configuration is as follows.
a point collecting means (21) for collecting points where a peculiar behavior occurs for a vehicle traveling on the road as singular points; and a distribution specifying means for specifying the distribution of the singular points on the road based on the collected singular points. (21); guidance setting means (21) for setting a timing for providing guidance regarding the singular point based on the identified distribution of the singular points; and guidance regarding the singular point at the timing set by the guidance setting means; the distribution specifying means divides the road into a plurality of sections in units of predetermined distances, calculates the frequency of the singular points collected for each of the plurality of sections, and The guidance setting means (21) specifies the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points, and the guidance setting means (21) specifies that the total number of frequencies of the plurality of adjacent sections is the first one. If there is a range where the threshold value is 3 or more, the timing for providing guidance regarding the singular point is set based on the section closest to the front in the traveling direction among the plurality of sections included in the range.
According to the driving support information guidance system having the above configuration, even when a singular point exists over a certain range, guidance regarding the singular point is not repeatedly provided, and the information is displayed before the vehicle passes through the range. It is possible to call attention to specific points at the right time.

1 Driving support information guidance system 2 Probe center 3 Server device 4 Vehicle 5 Navigation device 11 Server control ECU
21 CPU
12 Probe information DB
13 Probe statistical information DB
33 Navigation ECU
51 CPU

Claims (6)

A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guide means for providing guidance regarding the singular point at a timing set by the guide setting means;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
selecting a section from among the plurality of sections based on the distribution of the singular points as a reference for providing guidance regarding the singular points;
Setting the timing at which the vehicle reaches a point on the near side in the traveling direction by a reference distance with respect to the reference section as the timing for providing guidance regarding the singular point;
If there is a section with a curved road shape on the near side in the direction of travel with respect to the reference section, the reference distance is set so that guidance is provided before the vehicle enters the section. Support information guidance system. A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guide means for providing guidance regarding the singular point at a timing set by the guide setting means;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
If there is only one section among the plurality of sections where the frequency ratio is equal to or higher than a first threshold value, the driving support information guidance system sets a timing for providing guidance regarding the singular point based on the section. A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guide means for providing guidance regarding the singular point at a timing set by the guide setting means;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
If there are multiple sections whose frequency ratio is equal to or higher than the second threshold among the plurality of sections, and the distance between the plurality of applicable sections is a certain distance or more, then for each of the plurality of applicable sections. A driving support information guidance system that sets a timing for providing guidance regarding the specific point based on the section. A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guide means for providing guidance regarding the singular point at a timing set by the guide setting means;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
Among the plurality of sections, if there are a plurality of sections in which the frequency ratio is equal to or higher than the second threshold, and the distance between the plurality of corresponding sections is not more than a certain distance, then the distance between the plurality of corresponding sections is A travel support information guidance system that sets the timing for providing guidance regarding the specific point based on the section closest to the front in the traveling direction. A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guide means for providing guidance regarding the singular point at a timing set by the guide setting means;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
If there is a range in which the sum of the frequency ratios of a plurality of adjacent sections is equal to or greater than the third threshold, the singular point is determined based on the section closest to the front in the direction of travel among the plurality of sections included in the range. A driving support information guidance system that sets the timing for providing guidance. A point collection means for collecting points where a peculiar behavior occurs for a vehicle traveling on a road as a peculiar point;
Distribution identifying means for identifying the distribution of the singular points on the road based on the collected singular points;
Guidance setting means for setting a timing for providing guidance regarding the unique point based on the identified distribution of the unique point;
a guidance distribution means for distributing the timing set by the guidance setting means to the vehicle;
The distribution specifying means includes:
Divide the road into multiple sections by a predetermined distance,
Calculating the frequency of the singular points collected for each of the plurality of sections,
Identifying the ratio of the frequency of each section to the total number of the singular points collected on the road as the distribution of the singular points,
The guidance setting means includes:
selecting a section from among the plurality of sections based on the distribution of the singular points as a reference for providing guidance regarding the singular points;
Setting the timing at which the vehicle reaches a point on the near side in the traveling direction by a reference distance with respect to the reference section as the timing for providing guidance regarding the singular point;
If there is a section with a curved road shape on the near side in the direction of travel with respect to the reference section, the reference distance is set so that guidance is provided before the vehicle enters the section. Support information distribution device.

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