JP2002310680A - Traffic safety information providing method and program for providing traffic safety information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic information providing system for providing the shape of crossings, shape of dangerous spots, the degree of causes, while a vehicle is moving. SOLUTION: The vehicle 2 is loaded with navigation devices 1, and the navigation devices 1 receive traffic information (shape of crossings, degree of risk and so on) from a traffic safety information providing center 10 via a portable telephone network 5 and the Internet 6. The navigation devices 1 obtain the current position information Gi of own vehicle in GPS, display the current position Gi on a car navigation map, extract the shape of an accident history spot on a route Ri, previously transmitted from a traffic safety information providing center 12 and the degree of risk, open a screen for informing the degree of risk corresponding to the level of risk degree near the previous accident history spot (crossing) on the screen, and informs the same by voice.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile personal computer having a navigation function used for a moving body such as a vehicle, a train, a ship, a sightseeing bus, a taxi, a bicycle, and a person. It relates to a traffic safety information providing method that can provide more detailed information.

2. Description of the Related Art In recent years, personal computers have become very popular in companies, organizations, and homes, and it has become possible to count risk factors for traffic accidents. The first of the risk factors is poor visibility (including intersections), the second is bad signal (short, confusing, difficult to see installation etc.), the third is fast, the fourth is not able to pause, The fifth place is difficult to see on an uphill, the sixth place has the same road width, the seventh place is in the form of an intersection, the eighth place has heavy traffic, and the ninth place has illegal parking. A number of systems have been filed for avoiding danger by notifying such risk factor information. For example, the traffic information providing system disclosed in Japanese Patent Application Laid-Open No. Hei 10-97694 converts traffic information for each section from a central device into traffic information for each zone block in advance and converts the traffic information into data. Then, the traffic information user can request the traffic information by designating the departure place and the destination, and in response to the traffic information request from the traffic information user, the traffic information request from the departure place to the destination can be made. The traffic information corresponding to the request of the traffic information user is created by combining the traffic information (traffic jam, accident, etc.) for each zone block on the route and provided via a communication line. As a result, specific and detailed traffic information desired by the traffic information user is provided to the traffic information user, and the traffic information user can select an optimal route. In addition, there are those receiving various contents from a car via a portable wireless network and the Internet, and those receiving contents such as scenic spots, hot springs, and restaurants while being carried by a person while walking. Such a mobile personal computer has a mobile phone function and a GPS function and receives the above-mentioned contents. The content is distributed by a content distribution center that distributes various types of content via a mobile wireless network, and a user receives a desired content by selecting a software key on a screen, or by using a mobile phone function. There is a method of receiving various contents via the Internet. There is also an area-limited service that distributes content only to a predetermined zone of a mobile phone network. For example, JP-A-2000-
No. 330909 discloses that user terminals in a group (Tokyo area, Osaka area) are connected to a provider via a dedicated line, and the user terminal requests transmission of Web page information via a dedicated line, the Internet or the like. . Then, the location area of the user terminal is determined from the IP address of the user terminal, and the Web server selects Web data information based on the determined location area of the user terminal and selects a user terminal (such as a car navigation or a terminal equipped with a navigation function). ).

The above-mentioned method distributes various contents (including traffic information) collected in advance to terminals such as a car navigation system. However, the shape of an intersection, the shape of a dangerous place, and the degree of danger Is not delivered.
That is, since the car navigation system is a coarse map image, the shape of the intersection is generally represented by a simple cross line. On the other hand, intersections have various shapes, and the intersection may be covered with walls or trees, or may be present on a slope. However, in the conventional method as described above, since the information on the shape of the intersection and the information on the risk factors are not distributed, there is a problem that the driver still lacks information on safe driving. The present invention has been made in view of the above problems, and has as its object to provide a traffic information providing system that provides a shape of an intersection, a shape of a dangerous place, a degree of danger, a cause, and the like while a vehicle or the like is moving.

According to the method for providing traffic safety information of the present invention, a mobile telephone network and the Internet are transmitted from a server to a terminal having a navigation function, a position measurement function and a mobile telephone function mounted on a mobile body. In the traffic safety information providing method for providing danger information of a route on a map requested by the terminal through the terminal, the terminal of the moving body transmits a route to a destination on the navigation map displayed by the moving body. And transmitting the self-position measured by the position measurement function sequentially, storing the dangerous area and attribute information of the route transmitted from the server, and each time the self-position is obtained, Obtaining a traveling direction from the own position and the current own position; searching for a dangerous area of the route existing in the traveling direction; A step of notifying the attribute information corresponding to the assigned dangerous area, and notifying the attribute information and assigning the search area when the own position is no longer present in the assigned dangerous area. Stopping the server, wherein the server comprises:
Features, corresponding to the intersection area on the map where the latitude and longitude are assigned to the road, polygons indicating the shape of the intersection, provided information, attribute information consisting of the degree of danger is provided, the reception of the route, on the route Transmitting the existing dangerous area and the attribute information to the mobile object. The attribute information may be a polygon having a shape of the intersection viewed from the sky, and may include a surrounding polygon indicating a shape of a surrounding feature surrounding the intersection. The server is characterized by constantly collecting information relating to the dangerous area of the route from outside via the Internet, and reflecting this information in the risk level. Calculating a new degree of danger from the current speed obtained from the current position and the previous position and the provision information of the attribute information of the danger area of the route, and informing the user of the new danger level by voice. It is characterized by. Means for transmitting a route to a destination point on the navigation map displayed by the moving object,
Means for sequentially transmitting the self-position measured by the position measurement function, means for storing the dangerous area and attribute information of the route transmitted from the server, and each time the self-position is obtained, the previous self-position and the current Means for searching the traveling direction from the own position of the vehicle, searching for the dangerous area existing in the traveling direction, allocating the dangerous area to the route of the navigation map, and notifying the attribute information corresponding to the allocated dangerous area. A program for providing traffic safety information for functioning as a means for stopping notification of the attribute information and allocating a search area when the own position is no longer present in the allocated dangerous area.

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> FIG.
1 is a schematic configuration diagram of a traffic information providing system according to a first embodiment. Figure
The system 1 has navigation equipment 1 installed in a vehicle 2.
The navigation equipment 1 is mounted on the mobile phone network 5,
Traffic Safety Information Providing Center 10 via Internet 6
Traffic information (intersection shape, danger level, etc.)
I can. The aforementioned navigation equipment 1 is connected to a mobile phone.
Car navigation system 3 or GPS function (DGPS
Mobile phone with built-in mobile phone function, car navigation function, etc.
There is an information terminal 4 (mobile personal computer) and the like. Also, GP
It may be a mobile phone with S. Also, provide traffic safety information
Service center 10 is connected to the Internet 6
Safety organization PC 8 (Police, Road Management Office JA
F) and traffic safety from the general public PC 9
Information is collected in the DB server 11, and the navigation device
Shape of danger point (intersection) on route from class 2, danger
The traffic information is sent to the traffic safety information server 12
To send. Navigation equipment 1 is dedicated to car navigation
Of traffic information service using a mobile phone connected to
PC card that downloads the program and performs the following processing
-It has navigation software 3a. This car navigation software 3
a displays a car navigation map of a desired area on a screen,
A destination point Pp (feature) is specified on the car navigation map
And the route Ri to this destination point Pp is obtained.
And send the data Ri (latitude and longitude Gi: G1, G2, ...)
ing. Then, as shown in FIG.
The current location information Gi is acquired (S201), and the car navigation location
On the figure, the current position Gi is displayed (S202),
This current position Gi is the accident history point (intersection, curve, etc.)
Is determined (S203). Then the thing
If it is determined that the vehicle is approaching the old history point (intersection),
Route Ri previously transmitted from all information providing center 10
The file that stores the above accident history information
(S204), extracting the shape and danger level of the accident history point
Is issued (S205). Then, the accident history point (
The difference level) and the risk level according to the risk level
The screen is opened and the voice is notified (S206). this
On the screen, as shown in Fig. 2, the intersection of the road is shaded
The type of intersection (no corner cut, corner cut shape)
It is displayed (notified by voice). Therefore, dry
The bar shows the type of intersection, so the shape of the intersection
To imagine how to turn the handle in advance
Become. Also, the navigation equipment 1 uses a communication modem.
Built-in mobile phone function (packet communication type mobile phone
Cable connection) by mobile phone network, internet
Connection with the Internet. In other words, hypertext
HTML that is a language for describing files in the default format
(Hyper Text Markup Langua
g) Web data such as programs described by
To analyze and display and play back text, still images, videos, etc.
Allows you to browse the homepage (program)
It has a browser function. On the other hand, the traffic safety information provision
As shown in FIG. 3, the DB 10
IS database 15 and accident history database 16
It has a late history update process (not shown) and the like. Also,
The traffic safety information server 12 performs an intersection polygon generation step 17
And area buffer generating step 18 and linking step 1
9, intersection information search step 20, and risk degree calculation step 21
And an update process 22. Intersection polygon generation
Step 17 is a process in which the operator designates an exchange on the screen map.
Polygon Pi indicating the shape of the difference point (including the surrounding shape: Example
Fences, trees) according to the operator's instructions
It is stored in the polygon file 23. For example, in FIG.
As shown in (a), corners are square, round, no corner cut, etc.
Is generated. Also, area buffer generation
Step 18 is performed at the center of the intersection as shown in FIG.
A circle with a radius equal to the predetermined distance ri from the
Hi). In this area buffer Hi
Is assigned the mesh number mp in the road world
(Also called a danger point ID). And the linking process
19 is an accident history of the DB server 16 as shown in FIG.
The ID of the danger point in the database, for example, the form of an intersection
Polygon Pi, danger rank, number of accidents,
Link with history, intersection surrounding information, caution message, etc.
And memorize it. In other words, the accident history database
As shown in FIG. 4C, the area buffer H at the intersection
i (ID) and polygon Pi (corner type, round type,
) And danger (high safety, medium safety, low safety)
I), other cautionary messages (around the intersection
(Fences, trees), accident history (not shown), etc.
And The update processing 22 is performed externally (traffic safety organization, city
Information about danger points (eg, intersection names, intersections)
Point shape, accident information of the accident point, surrounding conditions of the intersection, etc.)
Each time it is received, there is a dangerous area ID corresponding to the intersection name.
Information to which information was sent
Update to information. In addition, the risk calculation step 21 includes an accident history
Database information (number of accidents, accident history, intersection
Traffic volume, construction at intersections, surrounding height, in shopping streets
Risk is updated each time the street parking, traffic, etc.) are updated.
And update to the calculated degree of risk. In addition, on the road
Determine the risk using slope (curve, etc.) as information and inform
Is also good. This risk is obtained and registered in advance from the accident history.
And the position Gi of the vehicle accompanying the travel
Each time is entered, the speed is calculated from the previous position and this speed
From the accident history information to determine the degree of danger and notify by voice
You may do so. In addition, the slope of the road (curves, etc.)
The degree of risk as information may be obtained and notified. Intersection information
The search step 20 is performed every time the route Ri from the vehicle 2 is input.
In addition, the information having the danger point ID on this route Ri
Search from the history database and send this
To the navigation equipment 1 of the vehicle 2. above
The traffic information providing system configured as shown in FIG.
This will be described below with reference to a sequence diagram. (When the car navigation map is in navigation equipment 1)
In the present embodiment, as shown in FIG.
The center 10 accesses the terminal 8 of the traffic safety organization and
Collects information on dangerous places on roads (intersections, curves, etc.)
(D1, d2), along with the general public PC 9
Dangerous location information has been provided (d3). And
The GIS (geography) of the DB server 11 is
Analyze the danger points in the information system) (d4)
(D5). This dangerous place is a book
The embodiment will be described as an intersection. In addition, of vehicle 2
Navigation equipment 1 displays a car navigation map and displays
The route Ri from your location to your destination is displayed on the screen
(D6). And the driver of vehicle 2
Operate the safety request key by operating the navigation device 1
Then (d7), the software 3a of the navigation equipment 1 is
U of traffic safety information providing center 10 via mobile phone network
RL, route Ri (G1, G2, ...) and safety information required
A request command and a password are transmitted (d8). This transmission
In accordance with the communication, the provider 7
And communication environment settings for navigation devices 1 are available
If the IP address is appropriate for the navigation device
1 and assign the URL to the Traffic Safety Information Center 10
Is sending to. Next, the Traffic Safety Information Center 10
When the route Ri is input, the server 12 of this
All dangerous area information including point coordinates Gi of Ri (trajectory)
Bip is searched from the DB server 11 (d9). This danger
The danger area information Bip is stored in the danger area buffer Hi (ID
), The degree of danger bp, the shape Pi of the danger area, etc.
Become. Then, all the searched dangerous area information Bip is
It is transmitted to the navigation equipment 1 of the vehicle 2 (d1
0), and download (d11). Meanwhile, navigator
The equipment 1 is used to determine the vehicle position Gi from the GPS function.
Acquisition and safety information on route Ri while moving
An information service display process is performed (d12). navigation
Processing when requesting safety information in equipment 1 and safety information service
The display processing is performed using the flowcharts of FIGS.
This will be described below. Figure 1 shows a PC car navigation software
It is described as. As safety information requests are entered,
Route Ri (GP) to the destination determined on the bi-image
1, GP2,...) (S601).
The coordinates Ri (G1, G1) of the navigation map assigned to the locus
G2,...) Is transmitted (S602). Then the root
It is determined whether or not the transmission of Ri has ended (S603),
If not, the process returns to step S602.
In step S603, transmission of the route Ri is performed.
When it is determined that the processing has been completed, the dangerous area information Bip is exchanged.
To determine whether it has been received from the
(S604) and download to memory (S6).
05). Then, dangerous area information Bip (Bip1, B
after reading ip2, ...), dangerous on route Ri
The dangerous area Hi of the area information Bip is associated (S6
06). For example, the dangerous area H of the dangerous area information Bip
Gi on the route Ri corresponding to the center coordinate Ghp of i
Use Gtp to distinguish them)
Link and record dangerous area information Bip with Hi
Remember Next, transmitted from the traffic safety information provision center 10
It is determined whether there is another dangerous area information Bip
(S608). In step S608, the transmitted
The dangerous area information Bip on the route Ri
If there is, update to the next dangerous area information Bip (S
609), and the process returns to step S607. And cheap
In the all information service display processing, the own vehicle position Gi is input.
Each time, the vehicle position Gi is read (S701). Next
Then, the vehicle is determined from the current vehicle position Gi and the previous Gi.
Find the direction of travel, and reach the beginning in this direction of travel
Dangerous area Hi on route Ri (Hip for distinction
(S702). Step
In step S702, it is determined that there is a dangerous area Hip.
When the dangerous area information Bip corresponding to this Hip
Is read (S703), and is linked to the dangerous area information Bip.
Pi indicating the shape of the intersection being shaded and a message
Read in the navigation image (S704) and display it on the navigation image.
Then, a message is generated (S705, S706). example
For example, as shown in FIG.
As you approach the buffet, you will get
There is a message that there is an intersection
Generate sound. Then, as you approach the intersection further,
There is no intersection. " The intersection is a point
And the polygon image 1 of this intersection
5 rank danger rank, number of accidents, accident details, around intersection
A message is displayed at the same time as a message indicating the status of the device.
Around the intersection of the polygon image 15 in FIG.
Rigon and the polygon Pi indicating the shape of the intersection are displayed
You. Next, the safety information service display process, the next input
The own vehicle position Gi is read (S707), and the inputted next vehicle is entered.
It is determined whether the vehicle position Gi has left the dangerous area Hip.
(S708). Dangerous area Hip in step S708
Is determined, the polygon image 15, the message
The flashing is stopped (S709). In other words, danger area
A Pi, clear the message. Next, the vehicle position Gi
Is out of the last dangerous area Hi on route Ri
Is determined, and if not, the process proceeds to step S701.
And the above processing is performed. <Embodiment 2> (When the car navigation map is not in the navigation equipment)
In the first embodiment, the car navigation device 1 predicts the navigation map.
The second embodiment has been described as having
-Car navigation equipment without a navigation map (for example,
Mobile phone with talk function, browser function, GPS function
Socon, i-mode (registered trademark) phone, etc.)
Good. In such a case, a map and
And a traffic information service program. Of this map
It is preferable to receive navigation map distribution from car navigation manufacturers
No. FIG. 9 is a sequence diagram illustrating the second embodiment.
You. (If there is a car navigation map in navigation equipment 1
Case) As shown in FIG. 9, the traffic safety information providing center 10
-The navigation image of each prefecture and area
Upon receiving the distribution, it is stored in the DB server (d0).
In addition, access to the terminal 8 of the traffic safety organization to
Collects information on locations (intersections, curves, etc.) (d
1, d2) along with dangerous individuals from the general public PC 9
The information of the place is provided (d3). With this information
GIS (Geographic Information System) of the DB server 11 based on the
Analysis of the danger spots in
You. On the other hand, the mobile PC of the vehicle is
Issuing the RL code, the homepage of the traffic safety information service
(D20, d21). Next, mobile
When the navigation key is selected on the PC, the center
Request for image distribution, and display the navigation image from the center.
The program is distributed (d22, d23). So
From the area name displayed on the screen,
May be selected) (also called the required area name ki), and
(Step d24). Center is required area ki
And the navigation image corresponding to the required area name ki
The data is transmitted to the mobile personal computer (d25). mobile
The PC downloads the navigation image sent from the center.
To load. And the driver of the vehicle displays the destination on the screen
Is displayed, and a destination point is set on this map.
With the setting of the destination point, the vehicle position Gi
The route Ri to the point is found and displayed on the map (d2
6). The driver then requests the safety information service.
Is selected, the route Ri (G1, G2, ...)
Send the safety information request command and password (d2
7). Next, the traffic safety information provision center 10
When Ri is input, the point coordinates G of this route Ri (trajectory)
All the dangerous area information Bip including i is stored in the DB server 11
And send it to the vehicle ’s mobile computer (d
28). And the mobile PC of the vehicle
Obtain own vehicle position Gi similar to the form, and
To display the safety information service on the route Ri.
(D29). That is, the position coordinate information Gi is obtained.
The current position Gi is connected to the accident history point (intersection, etc.).
Judgment as to whether the vehicle is approaching
When it is judged to be near, it is traffic safety reporting center 10
The accident history information of the route Ri transmitted in advance is stored.
File that has accidents
Extract the degree level. Then, the accident history point (
The difference level) and the risk level according to the risk level
Open the screen (intersection shape, message, etc.) and sound
Announce by voice. <Embodiment 3> Specific examples will be further described below.
You. First, as a specific example, the danger
An example of the degree factor parameter will be described. In this embodiment
Is the risk factor parameter, risk rank, accident
History, road facility characteristics, and intersection characteristics
Then, the traffic safety information server 12 stores the data as table data.
I remember. Fig. 10 shows the setting table of the risk rank.
TBLk. The risk rank is, as shown in the figure,
The road section from one intersection to the next is one unit
As road section figure data (polygon or line
Having a shape). And the danger rank is
For example, the weighted score for the lowest risk is "
1 ”, and as the risk increases thereafter, 2, 3,
4,5,6,7,8,9 increased, and the highest risk
Is set to "10". FIG.
It is a setting table TBL0 of a late history. Accident history is shown
The extent of the accident, such as property damage, personal injury
Accident (minor injury), personal injury (serious injury), personal injury (death)
The weighting points are set in this order. FIG.
2 is a setting table TBL1 to TBL for the characteristics of road facilities
7 The characteristics of road facilities are determined by the characteristics of road facilities.
Divided into factors, the degree of risk according to the degree of each characteristic
Set. Here, as the risk factor, for example, the road width T
BL1, traffic volume TBL2, speed is easy to go downhill
Slope TBL3 to know if it is uphill ahead
Climbing slope TBL4 to see if it is difficult to see
Curve curvature half to know if the visibility is bad
Diameter TBL5, TBL6 with many traffic, T with many on-street parking
BL7. FIG. 13 is a table for setting intersection characteristics.
Bull TBL8-10. Regarding the characteristics of the intersection,
For each risk factor, the risk according to the degree of each characteristic
Set the steepness. Here, for example, the road corner cut shape T
BL8, obstacle TBL9 near the intersection, signal display TBL
It is classified into three, and the corner cut shape TBL of the intersection
8, for example, round, square, no corner cut, near the intersection
In the obstacle TBL9, for example, a fence, a street tree,
In the lock wall, the high block wall, and the signal display TBL10,
For example, normal, straight ahead, short left turn time, short right turn time
Set the degree of risk according to the degree of each characteristic
I do. Next, the procedure of the risk evaluation process will be described.
FIG. 14 is a main flowchart showing the procedure of the risk evaluation process.
It is a chart. The flowchart shown shows an intersection
From each road section to the next intersection (polygon
Or has a line shape)
This is a processing procedure to be performed. First, the danger from the accident history
Degree rank (hereinafter rank 1), danger due to road shape
Degree rank (hereinafter referred to as rank 2), risk level by speed
Link (hereinafter referred to as rank 3)
Each is initialized (S1101). Then, each of rank 1
Risk factor parameters (ie, road width, traffic volume, uphill
Difficult to see, easy to get speed on downhill, on curves
Poor visibility, lots of traffic, lots of parking on the street)), La
Each risk factor parameter of link 2 (ie, corner cut of intersection)
Shape, obstacles near intersections, traffic lights), and rank
Each of the risk factor parameters of 3 is, for example, score = 0
And initialization (S1102). Next, the intersection approach hula
(KS), curve approach flag (CS), slope approach flag
(SS) are initialized to 0 (S1103).
Next, the risk factor parameters for the moving road section are
The road width is referred to TBL1 and the traffic volume is referred to TBL2.
The level of traffic by referring to TBL6.
The degree of parking on the street is determined by referring to TBL7.
And the score is added to the risk rank 2 (S
1104). Specifically, for example, on the future route
In, "the road width 6m or more and less than 10m" once, and
It is dangerous if the location of "road width 4m or more and less than 5m" is once
Factor parameter score is 5 points from TBL1 x 1 time + 7 points
× 1 time = 12 points, where traffic volume is “very low”
Is a risk factor if there is one occurrence and one "very many" point
Parameter score is 1 point x 1 time + 9 points x 1 from TBL2
Number of times = 10 points, 1 point where the degree of traffic is "less"
If the number of times, the score of the risk factor parameter is from TBL6
3 points x 1 time + = 3 points, and the degree of parking on the street is "very
If there is one “small” part and one “many” part,
The point of the rugged factor parameter is 1 point x 1 time + 7 from TBL7
Points × 1 time = 8 points. Note that the setting of these parameters
The road width is determined by GIS measurement or design value.
The traffic volume is planned or measured.
Information provided by traffic safety organizations, police, residents, etc.
Each shall be registered. Next, according to the past accident history
The process proceeds to the subroutine process SUB1 of the risk rank 1 and
The evaluation is performed based on the risk rank 1. Here, approaching
Evaluate the danger rank of the accident history points and
The user is notified of the degree of danger ahead (S1105). In addition,
Details of the SUB1 process will be described later. continue,
Acquire current position information Gi by GPS (S110)
6) Plot the current position on the road (S110)
7). Then, the current speed is determined by a vehicle speed pulse sensor or GPS
(S110)
8). When obtaining from the GPS, the value is obtained from the following equation. Speed = √ ((X coordinate movement amount) ² + (Y coordinate movement amount) ² )
/ Unit time The acquisition of the current position coordinates by GPS is
It is assumed that the operation is performed once every 0.2 seconds as a unit time.
Then, if currently stopped (speed = 0), the processing is terminated.
If the vehicle is traveling (speed> 0), the current position is determined.
The process is shifted (S1109). After the process is completed,
When restarting (speed> 0), the processing is restarted from the first processing. Continued
The current position to determine the current position.
A predetermined distance from the center of the intersection as an approaching road facility
Danger area buffer Hi with radius ri
An inter-operation (overlay) process is performed. This allows for intersections
Is determined (S1110). here
When approaching the intersection, the intersection approach flag KS =
It is set to 1 (S1120). On the other hand, not approaching the intersection
In this case, the processing shifts to the next processing. Next, the point of the current position
And curve (arc data) as approaching road facilities
Danger area with a predetermined distance ri from the center of the
A spatial operation (overlay) process with the file Hi is performed. This
Thus, it is determined whether the vehicle has approached the curve (S1).
111). Here, if you approach the curve,
The near flag CS is set to 1 (S1121). Meanwhile, the curve
If it is not approaching, the process proceeds to the next process. continue,
As the point of the current position and approaching road facilities, slopes
Slope (Elevation is arc, but plane is almost straight line data)
Dangerous area whose radius is a predetermined distance ri from the center of the section
Performs spatial operation (overlay) processing with buffer Hi
U. This determines whether the vehicle has approached a slope.
(S1112). Here, if you approach the slope,
The approach flag SS is set to 1 (S1122). Meanwhile, slope
If it is not approaching, the process proceeds to the next process. continue,
Whether you are approaching an intersection, curve, or slope
A determination is made (S1113). Where intersections, curves, slopes
When approaching any of the roads, ie KS ≠ 0 or
Is the risk assessment when driving when CS ≠ 0 or SS ≠ 0
The process proceeds to the price process SUB2 (S1114). And S
After the processing of UB2, the loop processing for each unit time is repeated.
To return, the process returns to step S1106 (S111
5). On the other hand, approaching an intersection, a curve, or a slope
If not (KS = 0, CS = 0, SS = 0)
Is to repeat the loop processing for each unit time as it is
Then, the process proceeds to step S1106 (S1115). Next, the past
Subroutine processing of risk rank 1 based on accident history
UB1 will be described. FIG. 15 shows a subroutine process.
It is a flowchart which shows the procedure of SUB1. First, G
The current position information Gi of the vehicle is acquired by the PS (S
1201), the current position Gi on the car navigation map
Is displayed (S1202), and this current position Gi is used as the accident history.
Determine if you have approached a point (intersection, curve, etc.)
(S1203). Then, at the accident history point (intersection)
When it is determined that the vehicle is approaching, the traffic safety information providing center 10
Stores accident history information on route Ri previously transmitted from
File (S1204),
The content and number of each accident are read from the history DB (S120
5). Then, according to the accident history table (TBL0),
Weighting points are added for each item content (S1206).
For example, accident history, personal injury (minor injury) once, personal injury
(Death) In one case, the score of the risk factor parameter is
6 points x 1 time + 10 points from the late history table (TBL0)
× 1 = 16 points. Then, based on the calculated score,
Then, the state of the risk rank 1 is extracted (S1207).
The state of risk rank 1 is based on the accident history shown in FIG.
It is determined from the evaluation table TBL11. The above score field
In this case, the risk rank 1 is “B”. Note that FIG.
Is an evaluation table TBL11 based on the accident history, and will be described later.
Evaluation table TBL12 based on the road facility shape
And an evaluation table TBL13 based on speed and speed.
The table is run according to the score of the risk factor parameter.
Colors for each rank when displaying each danger level on the screen
Separation is set. Then, the extracted risk run
Open a screen that informs you of the degree of danger according to
(S1208). The screen display example
Will be described later. Next, a subroutine for risk assessment during driving
The process SUB2 will be described. FIGS.
Is a flowchart showing a procedure of a subroutine process SUB2.
is there. Subroutine process SUB2 for risk evaluation during traveling
First determines whether or not the intersection approach flag KS = 1
(S1301). Here, if KS = 1, then:
As each risk factor parameter, T
By referring to BL8, the presence or absence of an obstacle near the intersection is determined by T.
By referring to BL9, the length of the signal display time is determined by TBL1.
By reference of 0, each is obtained and the score is dangerous
It is added to degree rank 2 (S1302). Specifically, an example
For example, at an approaching intersection,
If the shape is square, the risk factor parameter score
Is 3 points from TBL8, and the obstacle near the intersection is
If there is one "tree tree", the risk factor parameter score is T
5 points x 1 time = 5 points from BL9, signal display time
If "normal", the risk factor parameter score is TBL
From 10 one point = 1 point. Then, by GPS
The location information Gi is acquired (S1303), and the current
The position is plotted (S1304). And at the intersection
Perform overlay processing between Rigon and current position polygon
(S1305). Next, is the current location within the intersection polygon?
It is determined whether or not it is (S1306). Where the intersection polygo
Outside the intersection, it is determined whether or not the intersection approach flag KE = 1.
Judgment is made (S1320), and when KE = 1, that is,
When passing through a point, the intersection approach flag KS = 0, enter the intersection
The flag KE is set to 0 (S1330), and then the step is performed.
The process moves to S1401. On the other hand, if the current location is an intersection polygon
Inside the intersection, that is, when entering the intersection,
The flag KE is set to 1 (S1307), and the current speed is
Movement amount per unit time by speed pulse sensor or GPS
(S1306). And danger rank 3
To SUB3 calculation process. Calculation of risk rank 3
After the process of process SUB3, the process returns to step S1303.
Will be. It should be noted that this risk rank 3 calculation process
This will be described later. Next, the process proceeds to step S1401.
(See FIG. 18), is the curve approach flag CS = 1?
Determine whether or not. Here, if CS = 1, then:
Measure the radius of curvature of the curve or design value of the curve or GPS measurement
It is extracted from the value (S1402). And the curve curvature half
The risk factor parameter is obtained from the diameter by referring to TBL5.
And the score is added to the risk rank 2 (S140
3). To be specific, for example,
In addition, one place which is almost a straight line, a curvature radius of 40 to
If there is one place at 50m, the risk factor parameter
The score is 1 point x 1 time + 5 points x 1 time = 6 points from TBL5.
You. Then, obtain the current position information Gi by GPS
(S1405), the current position is plotted on the road (S1405).
1406). And the curve line and the current position polygon
(S1407). Next,
It is determined whether the location is on a curve line (S140)
8). Here, if it is outside the curve line,
It is determined whether or not the input flag CE = 1 (S1420), and C
When E = 1, that is, when passing a curve, approaching the curve
The flag CS = 0 and the curve entry flag CE = 0 (S
1430) Then, the process moves to step S1501. one
On the other hand, if the current location is inside the curve line,
When entering the curve, the curve entry flag CE is set to 1 (S
1409) The current speed is sent to a vehicle speed pulse sensor or GPS.
From the movement amount per unit time (S141).
0). Then, the process proceeds to the calculation process SUB3 of the risk rank 3.
(S1411). Risk level 3 calculation processing SU
After the process of B3, the process returns to step S1405.
Become. In addition, about the calculation processing of this danger level 3,
It will be described later. Next, when the process proceeds to step S1501
(See FIG. 19) determines whether or not the slope approach flag SS = 1.
Refuse. Here, if SS = 1, then continue on the slope
Extract road slope from slope design value or GPS measurement value
(S1502). And from the slope of the extracted slope
Obtaining risk factor parameters by reference to TBL3;
When climbing a hill, acquire by referring to TBL4 and acquire
The score obtained is added to the risk rank 2 (S1503).
Specifically, for example, on a slope approaching
If you are on a hill, there is one flat area and 6-8% slope
If there is one, the risk factor parameter score is TBL3
1 point × 1 time + 6 points × 1 time = 7 points. Then G
The current position information Gi is acquired by the PS (S150)
5) Plot the current position on the road (S150)
6). And the slope line and the current position polygon
A valley process is performed (S1507). Next, the current location is Saka
It is determined whether the vehicle is on a road line (S1508). here,
If it is outside the slope line, whether the slope approach flag SE = 1 or not
It is determined whether or not it is (S1520).
When passing through a slope, the slope approach flag SS = 0 and the slope advance
The input flag SE is set to 0 (S1530), and SUB2 ends.
And returns to step S1115 of the main routine.
You. On the other hand, if the current location is inside the slope line,
At the top of the slope, the slope approach flag CE is set to 1 (S1
509), the current speed is measured by a vehicle speed pulse sensor or GPS.
(S151)
0). Then, the process proceeds to the risk rank 3 calculation process SUB3.
(S1511). Risk level 3 calculation processing SU
After the process of B3, the process returns to step S1505.
Become. The calculation process of the risk rank 3 will be described later.
You. It should be noted that SS = 1 in step S1501.
If not, the hill road approach flag SS = 0 and the hill road advance
The input flag SE is set to 0 (S1530), and SUB2 ends.
And returns to step S1115 of the main routine.
You. Next, the subroutine process SUB3 of the risk rank 3
Will be described. FIG. 20 shows the subroutine processing SUB
9 is a flowchart showing a procedure of No. 3; Risk rank 3
In the subroutine process SUB3 of FIG.
It is determined whether or not the lag KS = 1 (S1601). here
If KS = 1, the above-described subroutine SUB2 processing is performed.
Between the current speed obtained by
Risk factor of risk rank 3 based on the width of the road to be shifted
The child parameter scores are evaluated based on the speed and the approach
It is obtained from the bull TBL21 (S1602). Where speed
The evaluation table TBL21 at the time of approaching an intersection is shown in FIG.
As shown in the figure, the road width is assigned to each speed range.
This is the score of the degree factor parameter. Specifically
Crosses a road with a speed of, for example, 58 km / h and a width of 40 m
If TBL21, the risk factor parameter point
The number will be 5 points. In step S1601, K
If S = 1, then the curve approach flag CS = 1
It is determined whether or not it is (S1611). Where CS = 1
If there is, it is obtained in the above-described subroutine SUB2 processing.
Based on the current speed and the radius of curvature of the curve
The score of the risk factor parameter in step 3 is
Obtained from the recent evaluation table TBL22 (S161
2). Here, the speed and the evaluation table TL when approaching the curve
B22, as shown in FIG.
Point of the risk factor parameter corresponding to the radius of curvature of the curve
Is attached. In step S1611
If CS is not 1, then the slope approach flag SS
It is determined whether or not = 1 (S1621). Where SS =
If it is 1, in the above-described subroutine SUB2 processing
Danger rank 3 based on the current speed obtained and the road gradient
Of the risk factor parameter of
It is obtained from the evaluation table TBL23 (S1622). This
Here, as shown in FIG.
Of the risk factor parameter
Scores are given. After the above processes are completed,
Evaluation of the risk rank 2 added earlier based on the road facility shape
It is assumed that the user is notified with reference to the table TBL12.
First, the result of the risk rank 3 is notified to the user (S1).
630). Here, it was mentioned as a specific example earlier
As a result, the risk rank 2 is 46 points in total.
Therefore, it becomes “c” from TBL12 (see FIG. 16),
Severity rank 3 is “5”. Next, according to the processing described above,
A display example of each of the obtained risk ranks will be described. Figure
24 is a screen table for displaying the danger rank to the user
It is a drawing showing an example. In the display example shown, the navigation screen
Is color-coded in the lower right corner according to the risk rank.
You. Risk rank 1 (evaluation based on accident history)
It is “B” from the example of body, which is TBL11 (see FIG. 16).
Display) to pink color, danger rank 2 (for road facilities)
Is "c" from the above specific example, and this
BL12 (refer to FIG. 16) orange display, risk level
Is rank 3 (evaluation by speed and road shape) the specific example mentioned above?
And “5”, which are derived from TBL13 (see FIG. 16).
The display is orange. This allows the user to
From the accident history, road shape, current speed, etc.
The steepness will be displayed. In addition, as a display example,
In addition, for example, all the danger levels 1 to 3 are added
From the value, the color in 3 steps, 5 steps, etc.
It is divided and displayed on the navigation screen.
Dangerous ranks such as intersections, curves, and slopes
Display in different colors depending on the
Various methods such as blinking can be adopted.
Furthermore, the danger level may be notified by voice.
No. If this alert is used, all danger levels
May be notified, or by voice only when the risk is high.
Notification. What's more,
Not only display or sound, but also
Along with the steepness information, a safe passing speed display and audio
May be notified.

As described above, according to the present invention, when a mobile terminal transmits a route to a destination set on a navigation map to a server via a mobile phone network and the Internet,
The server transmits attribute information including all intersection areas on the route and polygons indicating the shapes of the intersections, provided information, and the degree of danger. On the other hand, the mobile terminal stores the intersection area and attribute information on this route, and when there is an intersection area in the traveling direction obtained from the previous own position and the current own position, the terminal information of this intersection area is stored. Inform. That is, information on the shape of the intersection (the corner is no corner, no corner cut, a circle, a surrounding block, and the like) at which the mobile body arrives next is notified, and the degree of danger is also notified.
The driver can reach the intersection by imagining the shape of the intersection, the degree of danger, etc., so that safe driving is possible.
In addition, since information related to the intersection is constantly collected from external groups, citizens, and the like, and this is reflected in the risk, the risk according to the current situation of the intersection can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a traffic information providing system according to a first embodiment.

FIG. 2 is a flowchart illustrating an outline of the first embodiment.

FIG. 3 is a configuration diagram illustrating a traffic safety information providing center.

FIG. 4 is an explanatory diagram illustrating intersection polygons and danger information.

FIG. 5 is a sequence diagram of the first embodiment.

FIG. 6 is a flowchart illustrating an operation on the navigation equipment side.

FIG. 7 is a flowchart illustrating an operation on the navigation equipment side.

FIG. 8 is an explanatory diagram illustrating a traffic safety information service screen.

FIG. 9 is a sequence diagram illustrating the second embodiment.

FIG. 10 is a diagram showing a risk rank setting table TBLk.

FIG. 11 is a diagram showing an accident history setting table TBL0.

FIG. 12 is a table TBL1 to TBL for setting the characteristics of road facilities.
It is a figure showing BL7.

FIG. 13 is a table of intersection characteristic setting tables TBL8 to TBL10.
FIG.

FIG. 14 is a main flowchart showing a procedure of a risk evaluation process.

FIG. 15 is a flowchart illustrating a procedure of a subroutine process SUB1 of risk rank 1 based on a past accident history.

FIG. 16 is a diagram showing an evaluation table TBL11 based on an accident history, an evaluation table TBL12 based on a road facility shape, and an evaluation table TBL13 based on a speed.

FIG. 17 is a subroutine process SU for evaluating the degree of risk during traveling.
It is a flowchart which shows the procedure of B2.

18 is a flowchart showing the procedure of a subroutine process SUB2 for evaluating the degree of danger during running, following FIG.

FIG. 19 is a flowchart showing the procedure of a subroutine process SUB2 for evaluating the degree of danger during traveling, following FIG. 18;

FIG. 20 is a subroutine process SUB3 of risk rank 3
6 is a flowchart showing the procedure of FIG.

FIG. 21 is an evaluation table TBL2 when approaching an intersection with speed.
FIG.

FIG. 22 is an evaluation table TLB2 at the time of approaching a curve with speed.
FIG.

FIG. 23: Speed and evaluation table TBL23 when traveling on a slope
FIG.

FIG. 24 is a diagram showing an example of a risk display screen.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Navigation equipment 2 Vehicle 5 Mobile telephone network 6 Internet 10 Traffic safety information provision center 11 DB server 15 GIS database 16 Accident history database 17 Intersection polygon generation step 18 Area buffer generation step 19 Linking step 20 Intersection information search step 21 Risk level Calculation process

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 17/30 310 G06F 17/30 310Z 17/60 132 17/60 132 506 506 G08G 1/137 G08G 1 / 137 F-term (reference) 2F029 AA02 AA04 AA07 AB07 AB13 AC02 AC09 AC13 AC16 AC18 5B075 PQ02 PQ05 PQ23 UU14 UU16 5H180 AA01 AA05 AA06 AA14 AA21 AA25 BB05 CC12 FF05 FF13 FF22 FF25 FF33 FF33 FF33 FF33 FF33 FF33 FF33 FF33 FF33 FF33

Claims (5)

[Claims] 1. A danger information of a route on a map requested by a terminal via a mobile telephone network and the Internet from a server side for a terminal having a navigation function, a position measurement function, and a mobile telephone function mounted on a mobile body. In the traffic safety information providing method, the terminal of the moving body transmits a route to a destination on the navigation map displayed by the moving body, and the own position measured by the position measurement function is sequentially determined. Transmitting, and storing the dangerous area and attribute information of the route transmitted from the server, every time the own position is obtained, to determine the traveling direction from the previous own position and the current own position, Searching for a dangerous area of the route existing in the traveling direction; allocating the dangerous area to a route of the navigation map; Notifying the attribute information corresponding to the danger area, and stopping the notification of the attribute information and the allocation of the search area when the own position is no longer present in the allocated dangerous area, the server Is provided in correspondence with an intersection area on a map in which latitudes and longitudes are assigned to features and roads, polygons indicating the shape of the intersection, provided information, and attribute information including the degree of danger. Transmitting the dangerous area and the attribute information present above to the mobile object. 2. The traffic according to claim 1, wherein the attribute information is a polygon having a shape in which the intersection is viewed from the sky, and includes a surrounding polygon indicating a shape of a surrounding feature surrounding the intersection. How to provide safety information. 3. The server according to claim 1, wherein the server constantly collects information relating to the dangerous area of the route from outside via the Internet, and reflects the information in the risk level. Traffic safety information provision method. 4. A new degree of danger is calculated from a current speed obtained from the current position and a previous position and a provision information of attribute information of a danger area of the route, and this is notified by voice. 2. The method according to claim 1, further comprising:
The traffic safety information providing method according to 2 or 3. 5. A means for transmitting a route to a destination on a navigation map displayed by the moving object, a means for sequentially transmitting own positions measured by the position measurement function, a means for transmitting the route transmitted from the server, Means for storing a dangerous area and attribute information; each time the self-position is obtained, a means for obtaining a traveling direction from a previous self-position and a current self-position, and means for searching for the dangerous area existing in the traveling direction; Means for allocating a dangerous area to the route of the navigation map, and for notifying the attribute information corresponding to the allocated dangerous area, and for notifying the attribute information when the own position is no longer present in the allocated dangerous area, A program for providing traffic safety information to function as a means to stop the allocation of search areas.