JP2009064283A - Traffic information providing system and traffic information providing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traffic information providing system 1 and a traffic information providing method for properly collecting and analyzing traffic information. <P>SOLUTION: This traffic information providing system 1 is provided with: a control part of a communication part for acquiring ID and latitude/longitude from a GPS receiver 25 mounted on a vehicle 20; a database 11 for storing vehicle trajectory information 61 acquired by associating the latitude/longitude and the date with the ID, and for storing zone information or link information showing a route to be analyzed; and a management server 10 for extracting information on an object passing through the route of the zone information or link information by referring to the vehicle trajectory information 61 and a communication part for outputting the extracted object information as OD information 62, OD trip information 63 and traffic index information 64. Thus, it is possible to prevent the vehicle trajectory information 61 passing through the route of the zone information or the link information from being extracted when traveling state satisfies predetermined exclusion conditions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a traffic information providing system and a traffic information providing method that provide traffic information indicating a traffic situation of a vehicle, for example.

  Conventionally, various road traffic surveys have been conducted for the purpose of grasping the situation of road traffic and analyzing traffic signal control optimal for alleviating traffic congestion.

  For example, a questionnaire is conducted to understand the movement of a vehicle from a ward (starting point) to a ward (ending point) of a municipality and analyze the traffic situation in a macro manner.

  Further, in order to grasp the traffic situation from one main intersection on the road to another main intersection, the number of vehicles traveling is detected by sensors provided on the road.

  In addition, in order to grasp the time required to travel from one major intersection on the road to another major intersection, including changes due to traffic conditions, etc., it is actually measured by running the vehicle. Yes.

  However, grasping the road traffic situation by such a method has problems such as time-consuming, costly or inaccurate.

  On the other hand, an operation allowance analysis tabulation management system has been proposed as a system for grasping the operation of a vehicle (see Patent Document 1). This system uses a GPS-equipped digital operation recorder to record a vehicle's operation trajectory from position information, time / speed / distance and other information.

  In addition, a traffic information providing system has been proposed in which a current position is transmitted from an in-vehicle device with GPS to a central device and travel time from the central device to a destination is obtained (see Patent Document 2).

  Also, a probe information collection system has been proposed in which OD information transmitted by an in-vehicle device is received at a center and the center generates traffic information (see Patent Document 3). This probe information collection system uses information of a fixed sensor for a section where a fixed sensor is provided on a road, and uses OD information transmitted by an in-vehicle device for a section where a fixed sensor is not provided.

However, the system of the above-mentioned patent document 1 can simply analyze the operation trajectory and cannot grasp the overall road traffic situation.
In addition, the system of Patent Document 2 can only know the travel time at that time, and is not suitable for analysis of road traffic conditions.
Further, since the system of Patent Document 3 uses all the OD information of a vehicle that has traveled in a target section, it does not take into account the extension of travel time due to a vehicle detouring, and lacks accuracy. It was a thing.

JP 2002-24488 A JP 2000-113366 A JP 2006-146645 A

  An object of this invention is to provide the traffic information provision system and traffic information provision method which can collect and analyze traffic information appropriately in view of the above-mentioned problem.

  The present invention stores information acquisition means for acquiring identification information capable of individual identification and position information capable of grasping a position from a GPS terminal mounted on a vehicle, and traveling information in which the position information is associated with the identification information together with a date and time. And storage means for storing route information indicating the route to be analyzed, extraction means for extracting target information that has passed the route of the route information with reference to the travel information, and the extracted target information as appropriate output information Output means for outputting, and the extraction means is not subject to extraction if the traveling information in the route corresponds to a predetermined exclusion condition even if the traveling information passes through the route of the route information. A traffic information providing system configured as described above.

  The route information can be composed of appropriate information indicating a route, such as a start point ID and an end point ID, or a link ID. The starting point ID and the ending point ID can be configured by an ID indicating a predetermined fixed area such as a city ward or the like. Moreover, link ID can be comprised by ID which shows from the predetermined starting point intersection to the end point intersection.

The predetermined exclusion condition is, for example, a fixed time stop condition that there is a fixed time or more from the start point to the end point, and an out-of-route condition that there is a process that has deviated from the route from the start point to the end point. It can be recognized that there was another action between the start point and the end point, such as the input condition that the stop input such as loading, unloading and rest was made by the in-vehicle device from the start point to the end point, or multiple conditions of these It can be a condition for excluding information.
According to this invention, traffic information can be collected and analyzed appropriately.

  As an aspect of the present invention, the route information can be composed of a start area and an end area.

  Accordingly, it is possible to analyze the movement of the vehicle from a predetermined start area to an end area such as an area such as a city area or a zone or a zone regardless of the route. In particular, since the movement from the starting point area as the starting point to the ending point area as the destination can be extracted regardless of the route from the starting point area to the ending point area, it is possible to grasp the overall movement of the vehicle.

As an aspect of the present invention, the route information can be configured with a link ID indicating a single route from the starting point to the ending point.
As a result, the traveling state of the vehicle on a single route can be grasped, and traffic information can be grasped in detail on a route basis.

The output information can include the link ID and a downstream link ID indicating a route next to the route indicated by the link ID.
As a result, it is possible to grasp which route the vehicle travels after passing through a certain route, and for example, it is possible to grasp the tendency of which action among straight ahead, right turn, and left turn.

Further, the present invention stores an acquisition step of acquiring identification information that can be individually identified and position information that can be determined from a GPS terminal mounted on a vehicle, and traveling information that associates the position information with the identification information together with date and time. And storing the route information indicating the route to be analyzed in the storage means, extracting the target information that has passed the route of the route information with reference to the travel information, and appropriately extracting the extracted target information. An output step that outputs as output information, and the extraction step is traveling information that satisfies a predetermined exclusion condition even if the traveling information passes through the route of the route information. It is possible to provide a traffic information providing method that is not subject to extraction.
Thereby, traffic information can be collected and analyzed appropriately.

  According to this invention, traffic information can be collected and analyzed appropriately.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a system configuration diagram of the traffic information providing system 1, FIG. 2 shows a block diagram of the in-vehicle device 30 and the like mounted on the vehicle 20, and FIG. 3 shows a configuration diagram of the vehicle trajectory information 61.

  The traffic information providing system 1 mainly includes a management server 10, an in-vehicle device 30 mounted on the vehicle 20, a memory card 40, and an information transmission terminal 43, and includes a transport business user terminal 45, a traffic control system 51. , And a traffic simulator 53 is also provided.

  The management server 10, the information transmission terminal 43, and the transport operator user terminal 45 are connected to the Internet 5 so that they can communicate with each other. The traffic control system 51 is connected to the management server 10 so as to be communicable. The traffic simulator 53 is connected to the traffic control system 51 so as to be communicable.

  The management server 10, the information transmission terminal 43, the transport operator user terminal 45, the traffic control system 51, and the traffic simulator 53 are all configured by a computer, a communication unit including a LAN board, a keyboard and a mouse Etc., a display unit configured with a CRT display or the like, a storage unit configured with a hard disk or the like, and a control unit configured with a CPU or the like. A database 11 is provided in the storage unit of the management server 10. This database 11 also stores zone information composed of zones obtained by dividing Japanese geography by areas such as municipalities, and link information obtained by dividing roads on which the vehicle 20 can travel from intersections by intersections. Has been.

  As shown in FIG. 2, an in-vehicle device 30 is mounted on the vehicle 20, and a GPS receiver 25 is connected to the in-vehicle device 30. The GPS receiver 25 communicates with the GPS satellite 3 wirelessly and acquires position information composed of latitude and longitude. This position information may include altitude (height).

The in-vehicle device 30 includes a GPS receiving unit 31, an operation input unit 32, a control unit 33, a storage unit 34, and a card reader / writer 35.
The GPS receiver 31 is connected to the GPS receiver 25, acquires position information from the GPS receiver 25, and transmits it to the controller 33.

  The operation input unit 32 includes a plurality of input buttons, and transmits a pressed signal to the control unit 33. Thereby, the input of the work information which becomes a stop reason such as “loading”, “unloading”, “rest”, and “hands-on” is accepted.

The control unit 33 executes various control operations.
The storage unit 34 stores various information according to the control of the control unit 33. The stored information includes vehicle trajectory information 61 (see FIG. 3) in which the position information received from the GPS receiving unit 31 is added with the passing time when the position is passed and the ID for identifying the vehicle 20. The vehicle trajectory information 61 is preferably stored periodically at predetermined time intervals. The vehicle trajectory information 61 may include work information input by the operation input unit 32. In this case, a work item may be added to the items of ID, passage time, latitude, and longitude.

  The card reader / writer 35 writes information to the memory card 40 and reads information from the memory card 40 under the control of the control unit 33. The information to be written includes the vehicle trajectory information 61. In this vehicle trajectory information 61, information for one day's work is copied from the storage unit 34 to the memory card 40 at the end of the work. In addition, it may be configured to additionally write to the memory card 40 at any time when the regular vehicle trajectory information 61 is acquired.

  As shown in the configuration diagram of FIG. 3, the vehicle trajectory information 61 includes an ID, a passage time, a latitude, and a longitude. ID is an ID for identifying a vehicle. The passage time is the time when the vehicle passes the position, and is composed of year / month / day / hour / minute / second. Latitude and longitude are each composed of degrees, minutes and seconds.

  The vehicle track information 61 is stored in the memory card 40 by the vehicle-mounted device 30 of the traffic information providing system 1 configured as described above, and the memory card 40 is extracted from the vehicle-mounted device 30 and the card reader / writer of the information transmission terminal 43. The vehicle trajectory information 61 of the memory card 40 is transmitted to the management server 10 from the information transmission terminal 43. The management server 10 adds the received vehicle trajectory information 61 to the database 11 and stores it.

  FIG. 4 is a flowchart illustrating an operation in which the control unit of the management server 10 extracts the OD information 62 from the vehicle trajectory information 61 stored in the database 11, and FIG. 5 is a configuration diagram of the OD information 62. FIG. 6 is an image diagram showing an output image for analysis of the OD information 62.

  The control unit of the management server 10 refers to the vehicle trajectory information 61 stored in the database 11, calculates the start and end zones of the vehicle 20, and extracts the corresponding inter-zone travel information (step S1). This extraction is performed, for example, by referring to the trajectory traveled by the vehicle 20 one by one, checking the start point and the end point, and plotting if passing through the zone.

  The control unit determines whether or not there is a location that is off the roadway from the start point to the end point in the inter-zone travel information (step S2). If there is a roadway deviation (step S2: Yes), the process proceeds to step S4. If there is no roadway deviation (step S2: No), the process proceeds to step S3. This deviation from the road indicates that the vehicle 20 has departed, for example, by entering a parking lot, and indicates that the vehicle 20 is not traveling directly between the start and end points, that is, is not traveling normally.

  The control unit determines whether or not there is a stop for a certain time or more. If there is a stop for a certain time or more (step S3: Yes), the process proceeds to step S4, and if there is no stop for a certain time or more (step S3: No). ), The process proceeds to step S5. Stopping for more than a certain period of time is not a decrease in speed due to waiting for traffic lights or traffic jams, but indicates that the vehicle is detouring, such as parking on the street, and that it is not traveling without a break to the destination.

  When there is a roadway deviation at Step S2 (Step S2: Yes), or when there is a stop for a certain time or longer at Step S3 (Step S3: Yes), the control section excludes the inter-zone travel information. It is excluded from the extracted information as the traveling information between zones (step S4).

  The control unit does not deviate from the roadway at Step S2 (Step S2: No) and does not stop for a certain time or more at Step S3 (Step S3: No). ) For the inter-zone travel information, the number of vehicles from the zone to the zone is added for each day / time zone (step S5). Thereby, the OD information 62 as shown in FIG. 5 is completed.

  For example, as shown in the image diagram of FIG. 6, if this OD information 62 is divided by day / time zone and mapped to a two-dimensional map of the starting point (O) and the ending point (D) and the number of traveling vehicles is described, The number of vehicles heading from the start point (O) to the end point (D) can be grasped, and the movement of the vehicle 20 can be analyzed macroscopically.

  FIG. 7 is a flowchart illustrating an operation in which the control unit of the management server 10 extracts the OD trip information 63 from the vehicle trajectory information 61 stored in the database 11, and FIG. 8 is a configuration diagram of the OD trip information 63. is there.

  The control unit of the management server 10 refers to the vehicle trajectory information 61 stored in the database 11 and collates the travel trajectory of the vehicle 20 with the position information of main points stored in advance. Then, if there is a travel locus passing through a plurality of main points, it is defined that the link between the main point and the main point has traveled, and link travel information is extracted (step S11).

  A control part determines the presence or absence of the location which has remove | deviated from the roadway by the locus | trajectory from the starting point in the said link driving | running | working information to an end point (step S12). If there is a roadway deviation (step S12: Yes), the process proceeds to step S14. If there is no roadway deviation (step S12: No), the process proceeds to step S13. This off-road indicates that the vehicle 20 has departed, for example, by entering a parking lot, and indicates that the vehicle 20 is not traveling directly between the start and end points, that is, is not traveling normally.

  The control unit determines whether or not there is a stop for a certain time or more. If there is a stop for a certain time or more (step S13: Yes), the process proceeds to step S14, and if there is no stop for a certain time or more (step S13: No). ), The process proceeds to step S15. Stopping for more than a certain time is not a decrease in speed due to waiting for traffic lights or traffic jams, but indicates a detour such as parking on the road, indicating that the vehicle is not traveling to the destination without a break.

  When there is a roadway deviation at Step S12 (Step S12: Yes), or when there is a stop for a certain time or longer at Step S13 (Step S13: Yes), the control unit is excluded from the link travel information. The travel information is excluded from the extracted information (step S14).

  Of the link travel information that has moved between the main points, the control unit does not deviate from the roadway at Step S12 (Step S12: No), and does not stop for a certain time or longer at Step S13 (Step S13: No). ) Link travel information is stored as OD trip information 63 (step S15). Here, the link travel information next to the main point that is the end point in the link travel information is calculated as the downstream link ID.

  With the above operation, the OD trip information 63 as shown in FIG. 8 is completed. The OD trip information 63 includes a time zone (From), a time zone (To), a link ID, a downstream link ID, a vehicle classification, a traveling number, a number of link absorbing vehicles, a number of link generating vehicles, a number of road parked vehicles, an average travel time. , And the average speed.

The time zone (From) stores the time that has passed the starting point in the link ID.
The time zone (To) stores the time when the end point in the link ID is passed.

The link ID indicates a road when traveling in one direction on one road from the main point to the main point, and is a unique ID.
The downstream link ID indicates where the vehicle 20 that has passed through the main point serving as the end point of the link ID has gone to, that is, which link ID has moved to next.

The vehicle classification is composed of vehicle types such as passenger cars, mini cars, and large cars.
The number of vehicles is composed of the number of vehicles that have traveled.
The number of link absorbing vehicles stores the number of vehicles that have deviated (absorbed) from the road within the link section.
The number of vehicles having generated a link stores the number of vehicles that have appeared (occurred) on the road in the link section.
The number of vehicles parked on the road stores the number of vehicles 20 that have stopped on the road (performed on the road) within the link section.

As the average travel time, the time required for the movement from the start point to the end point of the link ID is calculated.
The average speed is calculated based on the average travel time.

  FIG. 9 is a flowchart illustrating an operation in which the control unit of the management server 10 extracts the traffic index information 64 from the vehicle trajectory information 61 stored in the database 11, and FIG. 10 is a configuration diagram of the traffic index information 64. is there.

  Here, steps S21 to S24 are the same as steps S11 to S14, and thus detailed description thereof is omitted.

  The control unit of the management server 10 does not deviate from the roadway at Step S12 (Step S22: No) and does not stop for a certain time or more at Step S13 among the link travel information that has moved between the main points (Step S22: No). Step S23: No) The delay time, the number of stops, and the stop time are calculated for the link travel information (step S25), and the calculated information is stored as the traffic index information 64 (step S26). Here, the link travel information next to the main point that is the end point in the link travel information is calculated as the downstream link ID.

  With the above operation, the traffic index information 64 as shown in FIG. 10 is completed. The traffic index information 64 includes a time zone (From), a time zone (To), a link ID, a downstream link ID, a vehicle classification, a traveling number, a number of link absorbing vehicles, a number of link generation vehicles, a number of road parked vehicles, an average delay time. , Average stop time, and average stop count.

  The time zone (From), the time zone (To), the link ID, the downstream link ID, the vehicle classification, the number of traveling vehicles, the number of link absorbing vehicles, the number of link generation vehicles, and the number of road parked vehicles, Since they are the same, detailed description is omitted.

The average delay time is an average of how much delay has occurred compared to the normal travel time on the link when the road is not congested, and is stored in seconds.
The average stop time is a time obtained by averaging the time during which the vehicle 20 is stopped in the link, and is stored in seconds.
The average number of stops stores the average number of times the vehicle 20 has stopped in the link.

FIG. 11 is a flowchart showing an operation of processing in which the control unit of the management server 10 provides various information in response to a request from the traffic control system 51 or the like.
The control unit of the management server 10 checks and analyzes the received request information (step S31).

If the request information is OD information 62 (step S32: Yes), the control unit stores the OD information 62 in the transmission buffer (step S33).
If the request information is OD trip information 63 (step S34: Yes), the control unit stores the OD trip information 63 in the transmission buffer (step S35).

If the request information is traffic index information 64 (step S36: Yes), the control unit stores the traffic index information 64 in the transmission buffer (step S37).
If the information (62, 63, 64) is stored in the transmission buffer, the control unit transmits the information to the request source (step S38).

With the above configuration and operation, it is possible to collect traffic information appropriately without conducting questionnaires as in the past, providing sensors on the road, or actually running and measuring with vehicles. Can be provided for analysis. Therefore, it is possible to collect highly accurate traffic information without the effort and cost as in the conventional case.
Further, since it is not necessary to install sensors (sensors and AVIs), traffic information can be acquired even in areas and roads where such facilities are not provided.

  Further, even if the vehicle 20 has traveled in the section for which information is to be collected, it is possible to exclude the vehicle trajectory information 61 of the vehicle 20 that has departed while traveling, so that travel due to road traffic conditions (such as traffic congestion) It is possible to accurately grasp changes in time.

  Further, since the OD trip information 63 and the traffic index information 64 have the downstream link ID, the traveling tendency of the vehicle 20 can be accurately grasped in units of main points (for example, intersections). Therefore, for example, when looking at the intersection of the crossroads, it is possible to grasp the total number of branches and the branching ratio in 12 ways, 4 directions on the departure side and 3 directions on the destination side. it can. For this reason, for example, it is possible to grasp a traveling tendency such that a certain time zone has many straight runs and another time zone has many right turns, which can be used for the operation of the lighting time of the right turn arrow.

Further, since the OD information 62 can be analyzed in units of zones, the movement of the vehicle 20 from one zone to another can be macroscopically analyzed.
Furthermore, by comparing these data before and after the opening of large-scale regulations and events, as well as the opening of anti-scale facilities, it can be used to examine traffic measures in traffic control.

Further, the number of vehicles 20 that have deviated (absorbed) from the road within the link section or the number of vehicles 20 that have appeared on the road based on the number of link absorbing vehicles and the number of link-generating vehicles in the OD trip information 63 and the traffic index information 64. Can be grasped. Therefore, for example, if a link having a large number of link absorbing vehicles or link generating vehicles is viewed and it is a location of a specific facility (for example, a supermarket), it can be used for analyzing the usage status of the facility. .
Moreover, the number of staying in the link section can be grasped, and it can be used for signal control in traffic control.

  In addition, the number of vehicles parked on the road (performed on the street) can be grasped by the number of vehicles parked on the road in the OD trip information 63 and the traffic index information 64, and roads with a lot of illegal parking are analyzed. As available.

  In the above embodiment, the in-vehicle device 30 stores the vehicle trajectory information 61 in the memory card 40, and the memory trajectory 61 is extracted and inserted into the information transmission terminal 43, whereby the vehicle trajectory information 61 is stored in the management server 10. However, it may be transmitted to the management server 10 by other methods. For example, a mobile terminal capable of wireless communication such as a mobile phone may be connected to the in-vehicle device 30, and the vehicle trajectory information 61 may be directly transmitted from the mobile terminal to the management server 10.

In correspondence between the configuration of the present invention and the above-described embodiment,
The information acquisition means of the present invention corresponds to the communication unit of the management server 10 of the embodiment,
Similarly,
The storage means corresponds to the database 11,
The GPS terminal corresponds to the GPS receiver 25,
The target information corresponds to the vehicle trajectory information 61,
The identification information corresponds to the ID of the vehicle trajectory information 61,
The position information corresponds to the latitude and longitude of the vehicle trajectory information 61,
The travel information corresponds to the vehicle trajectory information 61,
The output information corresponds to OD information 62, OD trip information 63, and traffic index information 64,
The extraction means corresponds to the control unit of the management server 10 that executes steps S1, S11, and S21.
The output means corresponds to the communication unit of the management server 10 that executes step S38.
Exclusion conditions correspond to when there is off road and there is a stop for a certain time,
The origin area corresponds to the origin zone,
The end point area corresponds to the end point zone,
The link ID corresponds to the link ID,
The downstream link ID corresponds to the downstream link ID,
The route information corresponds to the zone information and link information,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The system block diagram of a traffic information provision system. The block diagram of the vehicle equipment etc. which are mounted in a vehicle. The block diagram of vehicle locus information. The flowchart which shows operation | movement of the control part of a management server. The block diagram of OD information. The image figure which shows the output image for analysis of OD information. The flowchart which shows operation | movement of the control part of a management server. The block diagram of OD trip information. The flowchart which shows operation | movement of the control part of a management server. The block diagram of traffic index information. The flowchart which shows operation | movement of the control part of a management server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Traffic information provision system, 10 ... Management server, 11 ... Database, 20 ... Vehicle, 25 ... GPS receiver, 61 ... Vehicle locus information, 62 ... OD information, 63 ... OD trip information, 64 ... Traffic index information

Claims (5)

Information acquisition means for acquiring identification information capable of individual identification and position information capable of grasping the position from a GPS terminal mounted on the vehicle;
Storage means for storing driving information in which the position information is associated with the identification information together with date and time, and storing route information indicating a route to be analyzed;
Extracting means for extracting target information that has passed the route of the route information with reference to the travel information;
Output means for outputting the extracted target information as appropriate output information,
A traffic information providing system in which the extraction means is configured not to be extracted if it is travel information that has passed through the route of the route information if the travel situation in the route satisfies the predetermined exclusion condition. . The traffic information providing system according to claim 1, wherein the route information is composed of a start area and an end area. The traffic information providing system according to claim 1 or 2, wherein the route information is configured by a link ID indicating a single route from a starting point to an ending point. The traffic information providing system according to claim 3, wherein the output information includes the link ID and a downstream link ID indicating a route next to the route indicated by the link ID. Acquire identification information that can be individually identified and position information that can be located from a GPS terminal mounted on the vehicle,
The travel information in which the position information is associated with the identification information together with the date and time is stored, and the route information indicating the route to be analyzed is stored in the storage unit.
Extract the target information that has passed the route information with reference to the travel information,
Output the extracted target information as appropriate output information,
The extraction is a traffic information providing method in which the extraction is not subject to extraction if the traveling information in the route is traveling information that satisfies a predetermined exclusion condition even if the traveling information passes through the route of the route information.

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