JP2006317179A - Traffic guidance system, terminal device, and server system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traffic guidance system capable of properly supporting the traffic guidance by transmitting the latest traffic information to a vehicle while monitoring the flow of the traffic. <P>SOLUTION: When the travelling route of a vehicle becomes un-matching with the traffic information indicated by the server device 200, the terminal device 100 mounted on the vehicle searches the route again. The terminal device 100 transmits the route information and the terminal intrinsic information to the server device 200, and again requests estimation of the traffic flow to the server device 200 from the results of route search by the terminal device 100. Thereby, the route information of each terminal device 100 managed by the server 200 is always the latest information, therefore the simulation of the traffic flow executed by the server device 200 can always device a correct traffic flow estimation results. Consequently, the estimation of the optimum traffic flow can be realized, and the terminal device 100 can correctly calculate the necessary time information by the route search using the information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a traffic guidance system for predicting traffic flow and searching for an optimum route, and more particularly, to a network client type traffic guidance system for searching for an optimum route by connecting to a center device via a network. And a server device and a terminal device used in the traffic guidance system.

  Conventionally, when predicting traffic jams in vehicles, past traffic information is statically classified according to factors such as date, day of the week, location, and weather, and each traffic jam data is stored as a database and actually predicted. The traffic jam is predicted by setting parameters such as the desired date, day of the week, and location, and acquiring traffic jam information from the corresponding database. In addition, when traffic congestion is expected to increase temporarily due to events, etc., traffic congestion is predicted by determining the traffic volume on the road and modeling traffic dynamics on the computer. Predict traffic congestion points by artificially generating a flow. And, the police station etc. has decided the signal control data for resolving the traffic jam for the predicted traffic jam location and controlling the traffic signal based on the signal control data is also studied. Yes. However, at present, when traffic congestion occurs due to a sudden accident or the like, it is common practice to reduce the traffic jam time by a police officer or the like guiding the vehicle.

In addition, traffic guidance that attempts to eliminate traffic congestion by automatically encouraging the driver to make a detour by using communication between the in-vehicle navigation computer installed in the vehicle and the roadside management computer (that is, the center device) on the ground side A system has also been proposed (see, for example, Patent Document 1). In this technology, a road management computer collects route information from an in-vehicle navigation computer of each vehicle. When an accident or the like occurs, the road management computer collects the route information transmitted from the in-vehicle navigation computer of each vehicle in addition to the traffic situation detected by the monitoring camera or the monitoring sensor. Predict congestion. When the traffic volume is predicted to exceed the road capacity, that is, when it is predicted that a traffic jam will occur, the road management computer on the ground side selects a vehicle that can detour to another route. However, a system is constructed so as to transmit detour route information to the vehicle-mounted navigation computer of the vehicle. Thereby, temporary traffic jams in a specific section can be alleviated.
Japanese Patent Laid-Open No. 9-22497

  However, in the technique described in Patent Document 1 above, the road management computer on the ground side determines a bypassable vehicle. At this time, the factors for determining the bypassable vehicle by the road management computer are respectively This is information on the time difference between the required time based on the route information for each vehicle and the required time when detouring. That is, if the required time when using the detour route is shorter than the required time when each vehicle continues along a predetermined route, the road management computer determines that the corresponding vehicle is a detourable vehicle. In other words, the detour information that it is better to detour in order from the vehicle that can arrive at the destination earlier by detouring is transmitted from the road management computer to the in-vehicle navigation computer of the corresponding vehicle to prompt detouring.

  However, whether or not a vehicle that has received a detour instruction from the road management computer actually detours depends on the judgment of the driver, and even if the detour instruction is received, the corresponding vehicle does not always detour reliably. There are also vehicles that do not receive a detour instruction from the road management computer if the arrival time at the destination when detouring is not so shortened. However, even in vehicles that do not receive such a detour instruction, the arrival time at the destination may be shortened by detour. If you do not receive a detour instruction in this way, depending on the nature of the driver, if you approach a traffic jam, you may immediately detour without knowing whether the time can be shortened or not. Not necessarily.

  In other words, the conventional traffic guidance system including the technique described in Patent Document 1 should detour in order from vehicles that can arrive at the destination earlier by detouring in order to eliminate traffic congestion. This information is sent to the in-vehicle navigation computer, and it is trying to optimize traffic congestion by encouraging detours. However, whether or not a vehicle that has received a detour instruction really detours depends on the driver's own judgment, and if the time reduction due to detour is slight, some vehicles do not receive a detour instruction. The guidance system does not necessarily provide the optimal control for eliminating congestion.

  The present invention has been made in view of the above points, and appropriately supports traffic guidance by transmitting the optimal traffic flow information to the vehicle based on the required time close to reality while monitoring the traffic flow. It is an object of the present invention to provide a traffic guidance system that can be used, a terminal device used in the traffic guidance system, and a server device.

  In one aspect of the traffic guidance system of the present invention, a terminal device that is mounted on a vehicle and performs a route search and a server device that is installed on the ground and that simulates a traffic flow are connected to a network to predict the traffic flow. The terminal device searches for a corrected route when the vehicle deviates from a predetermined route from the route search result of the vehicle on which the terminal device is mounted, Optimal route search means for performing the optimum route search by sending the corrected route search result to the server device as the latest route information, and the server device uses the latest route information transmitted from the terminal device to A configuration is adopted in which a simulation is performed and traffic flow information transmitting means for transmitting the latest traffic flow information as a result of the simulation to the terminal device is provided.

  According to this configuration, the in-vehicle terminal device and the ground server device are connected to the network, and if the route of the host vehicle deviates from the predetermined route from the route search result obtained by the terminal, the route search is performed again. The terminal device transmits the latest route information that is the result of the route search again to the server device. Then, the server device performs a traffic flow simulation using the latest route information transmitted from each terminal device, and repeatedly performs the process of transmitting the latest traffic flow information as a result to the terminal device. . Therefore, a traffic guidance system that appropriately supports traffic guidance can be realized by performing an optimum route search through such processing.

  Moreover, in one aspect of the traffic guidance system of this invention, in addition to the structure of the said invention, a terminal device is further the driving pattern detection means which measures the driving pattern information of a vehicle, when calculating | requiring a correction route search result. The structure to be provided is taken.

  According to this configuration, when the terminal device obtains the route search result, the driving pattern detection unit performs the route search in consideration of the driving characteristics and preferences of the driver. As a result, the rate at which the vehicle deviates from the predetermined route is reduced. can do. As a result, the number of re-route searches due to deviation from a predetermined route and the number of traffic flow calculations associated with a route change can be reduced, and the load on the terminal device and the server device can be reduced.

  Further, in one aspect of the traffic guidance system of the present invention, in addition to the configuration of the invention, the terminal device further selects a route according to the driver's intention from a plurality of routes when obtaining a corrected route search result. The structure provided with the intention input means to take is taken.

  According to this configuration, when the terminal device obtains a route search result, if a plurality of route search results are displayed and presented to the driver, the driver makes a predetermined input to the intention input means such as a push button. Can be selected. Therefore, the rate at which the vehicle deviates from the predetermined route can be reduced. That is, since the number of reroute searches due to deviation from a predetermined route and the number of traffic flow calculations associated with a route change can be reduced, the load on the terminal device and the server device can be reduced.

  Moreover, this invention can also provide the terminal device used for the traffic guidance system of the said invention. That is, one aspect of the terminal device of the present invention communicates with the server device to cause the server device installed on the ground to perform traffic flow simulation, and is optimal based on the traffic flow information predicted by the server device. A terminal device mounted on a vehicle to perform a simple route search, and when a vehicle deviates from a predetermined route from the route search result of the vehicle on which it is mounted, search for a corrected route, The corrected route search result is transmitted to the server device as the latest route information, and the configuration is provided with optimum route search means for acquiring the latest traffic flow information from the server device and performing the optimum route search.

  According to another aspect of the terminal device of the present invention, in the configuration of the invention, the optimum route search means includes terminal communication means for receiving current traffic flow information from the server device via a network, and terminal communication means. The traffic flow information storage means for storing the traffic flow information received by the traffic flow, the route search based on the traffic flow information stored in the traffic flow information storage means, and the route search result and the terminal to the server device via the terminal communication means Route search means for transmitting the unique information, display means for displaying the traffic flow information transmitted from the server device and stored in the traffic flow information storage means, and the route search result transmitted by the route search means to the server device, A traffic jam information acquisition unit for receiving traffic jam information from a traffic jam information providing unit installed in the network, and a position acquisition unit for measuring the current position of the terminal device and transmitting the current position to the route search unit A configuration with a.

  In addition to the configuration of the invention, one aspect of the terminal device of the present invention further employs a configuration including driving pattern detection means for measuring driving pattern information of the vehicle when obtaining a corrected route search result.

  In addition to the configuration of the invention, one aspect of the terminal device of the present invention further includes intention input means for selecting a route in accordance with the driver's intention from a plurality of routes when obtaining a corrected route search result. Take the configuration.

  Moreover, this invention can also provide the server apparatus used for the traffic guidance system of the said invention. That is, one aspect of the server device of the present invention is a server device that is installed on the ground to communicate with a terminal device mounted on a vehicle in order to perform a route search and execute a traffic flow simulation, A traffic flow simulation is performed using the latest route information transmitted from the terminal device, and a configuration including traffic flow information transmitting means for transmitting the latest traffic flow information as a result to the terminal device is adopted.

  Further, according to one aspect of the server device of the present invention, in the configuration of the invention, the traffic flow information transmitting unit includes a server communication unit that receives terminal information including a route search result and terminal specific information from the terminal device; The terminal information management means for managing the terminal information received by the server communication means for each terminal device, the traffic flow calculation for calculating traffic flow information by simulating the traffic flow based on the traffic situation and the terminal information And a traffic situation detecting means for detecting and storing the current traffic situation based on the image information acquired by the image input means installed on the ground.

  According to the traffic guidance system of the present invention, it is possible to accurately grasp the route through which each vehicle passes in response to the generated traffic jam location, so that it is possible to perform traffic flow prediction closer to reality. As a result, accurate time information can be obtained up to the target point for each vehicle. Further, even if there is a vehicle that does not have a navigation system or a driver that does not transmit route information to the server device, the traffic guidance system according to the present invention can be used to grasp the required time closer to reality. . As a result, the terminal device of each vehicle is connected to the server device, and it is expected that more drivers receive real-time traffic flow information while providing their own route information. Therefore, the accuracy of traffic flow prediction is further improved. A synergistic effect can be expected.

  That is, in the conventional traffic guidance system, since the route search result of each terminal device is transmitted to the server device, the traffic guidance system of the present invention requires the server device when it needs it while taking advantage of its features. The route information is not sent from each terminal device but route information is transmitted to the server device as a route search result when each terminal device performs a route search. In addition, when each vehicle does not follow the route information (that is, when it deviates from the predetermined route), the terminal device performs a route search again, and the route search result (that is, the (Route search result) information is transmitted to the server device. Thus, the route information of each terminal device managed by the server device is always the latest, and the traffic flow simulation performed by the server device can always derive a correct traffic flow prediction result. As a result, each terminal device can perform a more accurate route search based on a correct traffic flow prediction result.

<Summary of invention>
The traffic guidance system of the present invention has a configuration in which a terminal device mounted on a vehicle and a server device installed on the ground are connected to a network. In such a configuration, when each terminal device transmits a route search result to the server device, each terminal device does not issue a request and acquire route information from each terminal device when the server device needs it. When the route search is performed, each terminal device voluntarily transmits the route search result and the terminal-specific information as route information (that is, terminal information) to the server device. In addition, when each vehicle does not follow the route information (that is, when it deviates from the predetermined route), each terminal device performs a route search again, and a route as a new route search result. Information is retransmitted from each terminal device to the server device. By such re-transmission processing of route information by each terminal device, the route information of each terminal device managed by the server device is always the latest route information. Therefore, the simulation of traffic flow (hereinafter referred to as traffic flow) performed on the server device can always derive a correct traffic flow prediction result.

  Hereinafter, some embodiments of a traffic guidance system according to the present invention will be described in detail with reference to the drawings. In the drawings used in the embodiments, the same components are denoted by the same reference numerals, and redundant description is omitted as much as possible.

<Embodiment 1>
FIG. 1 is a schematic configuration diagram of a traffic guidance system common to each embodiment of the present invention. As shown in FIG. 1, the traffic guidance system of the present invention includes a terminal device 100 such as an in-vehicle navigation computer that is mounted on a vehicle and performs a route search, a server device 200 that is installed on the ground and that simulates a traffic flow, The terminal device 100 and the server device 200 are configured by a network 300 that performs communication for mutually providing information.

  FIG. 2 is a configuration diagram of the terminal device 100 according to Embodiment 1 in the traffic guidance system shown in FIG. As illustrated in FIG. 2, the terminal device 100 stores the terminal communication unit 101 that receives the current traffic flow information 501 from the server device 200 via the network 300 and the traffic flow information 501 received by the terminal communication unit 101. The traffic flow information storage unit 102 that performs the route search based on the traffic flow information 501 stored in the traffic flow information storage unit 102 and transmits the route search result 503 to the server device 200 via the terminal communication unit 101 The search unit 103 and the display unit 104 for displaying the traffic flow information 501 transmitted from the server device 200 and stored in the traffic flow information storage unit 102 and the route search result 503 transmitted by the route search unit 103 to the server device 200. And a traffic jam information acquisition unit 1 for receiving traffic jam information 502 from a traffic jam information providing unit installed on the ground such as an optical beacon or an FM multiplex broadcast receiver. 5, has a configuration including a position acquisition unit 106 to transmit the current location to the route search unit 103 measures the current position of the terminal apparatus 100.

  FIG. 3 is a configuration diagram of the server device 200 in the traffic guidance system shown in FIG. As illustrated in FIG. 3, the server device 200 receives a server communication unit 201 that receives terminal information 504 including a route search result 503 and terminal specific information from the terminal device 100, and terminal information 504 received by the server communication unit 201. A terminal information management unit 202 that manages each terminal device 100, a traffic flow calculation unit 203 that calculates traffic flow information 501 by performing a traffic flow simulation based on the traffic situation 505 and the terminal information 504, and a road It has a configuration including a traffic condition detection unit 204 that detects and accumulates the current traffic condition 505 based on information such as a monitoring camera installed above.

  Next, the operation of the traffic guidance system in Embodiment 1 of the present invention will be described. FIG. 4 is a flowchart showing a flow of a route search standby operation of the traffic guidance system in the first exemplary embodiment of the present invention. FIG. 5 is a flowchart showing the flow of the route search operation of the traffic guidance system according to Embodiment 1 of the present invention. Therefore, the flow of operation of the traffic guidance system in the first embodiment will be described with reference to FIGS. 1, 2, 3, 4, and 5. FIG.

  First, according to the flowchart shown in FIG. 4, the flow of the route search standby operation which is a precondition for the route guidance system of the present invention to perform route search will be described. As a precondition for route search, the terminal device 100 always measures the current position of the vehicle using the position acquisition unit 106 when the vehicle on which the terminal device 100 is mounted is traveling (step S1). In parallel with this, when the server apparatus 200 has not received the terminal information 504 from the terminal apparatus 100, the traffic condition detection unit 204 uses the image information acquired by a monitoring camera or the like installed on the road. Based on the generated traffic situation 505, the traffic flow calculation unit 203 is used to calculate the traffic flow information 501 (step S2).

  Then, the traffic flow information 501 calculated by the traffic flow calculation unit 203 is transmitted to the terminal device 100 of the vehicle using the server communication unit 201. The traffic flow information 501 transmitted from the server device 200 to the terminal device 100 is received using the terminal communication unit 101, and the traffic flow information 501 is stored in the traffic flow information storage unit 102 of the terminal device 100 (step S3). ). The traffic flow information 501 is displayed on the display unit 104 of the terminal device 100 and transmitted to the driver (step S4). The vehicle equipped with the terminal device 100 acquires the traffic information 502 from the traffic information providing unit such as an optical beacon installed on the road using the traffic information acquiring unit 105 whenever it can be received ( Step S5).

  Next, according to the flowchart shown in FIG. 5, the flow of the operation in which the traffic guidance system of the present invention actually performs a route search will be described. When the vehicle driver performs a route search using the terminal device 100, the route search unit 103 of the terminal device 100 dynamically performs a route search using the traffic flow information 501 and the traffic jam information 502, and the route search result. 503 is calculated (step S11). Furthermore, when the route search unit 103 of the terminal device 100 performs a route search, the route search result 503 is transmitted from the terminal communication unit 101 of the terminal device 100 to the server device 200. At this time, the terminal device 100 generates terminal information 504 in which information unique to the terminal device 100 (that is, terminal specific information) such as an ID number is added to the route search result 503, and the terminal communication unit 101 is The terminal information 504 is transmitted to the server communication unit 201 of the server device 200 (step S12).

  Next, the server device 200 that has received the terminal information 504 by the server communication unit 201 transmits the terminal information 504 to the terminal information management unit 202. Then, the terminal information management unit 202 manages each terminal information 504 by dividing each terminal device 100. The terminal information 504 collected here is a collection of the terminal information 504 of each terminal device 100.

  When the terminal information 504 is transmitted from each terminal device 100 to the server device 200 in this way, the traffic flow calculation unit 203 of the server device 200 adds the newly added or changed terminal information 504 and the current traffic. A traffic flow simulation is performed using the situation 505 (that is, using the information of the route search result 503 of each terminal device 100) to generate the traffic flow information 501 (step S13).

  And the terminal information management part 202 of the server apparatus 200 judges whether the traffic flow information 501 produced | generated now differs from the traffic flow information 501 transmitted last time to the terminal device 100 (step S14), and produced | generated now. When the traffic flow information 501 is different from the traffic flow information 501 transmitted to the terminal device 100 last time (Yes in step S14), all the terminals existing in a predetermined area are transmitted from the server communication unit 201 of the server device 200. The traffic flow information 501 just generated is transmitted to the device 100 (step S15). If the traffic flow information 501 generated now is the same as the traffic flow information 501 transmitted to the terminal device 100 last time (No in step S14), the traffic flow information 501 generated now is not transmitted.

  Next, when the traffic flow information 501 generated now is transmitted from the server device 200 to the terminal device 100 in step S15, the terminal device 100 that has received the traffic flow information 501 causes the traffic flow information storage unit 102 to The traffic flow information 501 is accumulated using the information. Further, the traffic flow information 501 is displayed on the display unit 104.

  When the traffic flow information 501 is updated in this way, the route search unit 103 of the terminal device 100 automatically performs a new route search based on the updated traffic flow information 501 to obtain a desired route search. A result 503 is generated (step S16). Then, the route search unit 103 determines whether or not the route search result 503 generated here is different from the previous route search result 503 (step S17).

  Here, when the currently generated route search result 503 is different from the previous route search result 503 (Yes in step S17), the route search unit 103 of the terminal device 100 performs the route search again. A route search result 503 is obtained, and terminal information 504 in which terminal specific information is added to the route search result 503 is generated and transmitted to the server device 200. Thereafter, the processing after step S12 is repeated.

  In the above description, the case where the route search result 503 is transmitted from one terminal device 100 to the server device 200 has been described, but the server device 200 manages the terminal device 100 existing in a predetermined area. Generally, a plurality of terminal devices 100 exist in a predetermined area. Therefore, the route search result 503 is transmitted from another terminal device and the traffic flow information is updated, but this traffic flow information is transmitted to the terminal devices of all the vehicles existing in the area.

  Further, by performing the processing of each step as shown in FIG. 5 described above, the latest traffic flow information 501 calculated by the server device 200 exists in the terminal device 100, and each terminal device 100 is included in the server device 200. Terminal information 504 including the latest route information is stored. Therefore, if the driver operates according to the route information calculated by the terminal device 100, there will be no problem with the operation of each component described above. However, in general, there is a driver who moves to a side road when he / she waits to some extent due to traffic congestion and tries to detour. At this time, since the traffic flow information 501 updated to the latest information is always displayed on the display unit 104 of the terminal device 100, the driver determines whether or not it is better to make a detour based on the displayed traffic flow information 501. I do.

  Furthermore, there is no particular problem when the vehicle follows the instructed route, but when it is determined that the other route is earlier, the vehicle deviates from the instructed route. In such a case, since the terminal device 100 includes the position acquisition unit 106 and the current route search result 503, it is possible to determine whether or not the current position is out of the route information. Here, when the own vehicle deviates from the predetermined route, the route search unit 103 performs the route search again. In such a case, the route search unit 103 dynamically searches for a route using the traffic flow information 501 and the traffic jam information 502. Also in that case, the processing after step S12 in FIG. 5 is repeated as it is.

  By repeating the processing of each step as described above until reaching the destination, a new route search result 503 is always transmitted from the terminal device 100 to the server device 200. As a result, the prediction result of the traffic flow information 501 of the server device 200 is also updated to the latest, so that the terminal device 100 can always maintain the state of the latest traffic flow information 501. By using the algorithm as described above, it is possible to predict a traffic flow that is close to reality, and the driver can obtain accurate travel time information to a desired target point.

<Embodiment 2>
FIG. 6 is a configuration diagram of a terminal device according to Embodiment 2 in the traffic guidance system shown in FIG. The terminal device 100a according to the second embodiment shown in FIG. 6 is different from the terminal device 100 according to the first embodiment shown in FIG. 2 only in that a driving pattern detection unit 107 that measures driving pattern information 511 of the driver is added. It is. Therefore, in the second embodiment shown in FIG. 6, in order to distinguish it from the terminal device 100 of the first embodiment shown in FIG.

  The basic operation of the route search in the terminal device 100a of the second embodiment shown in FIG. 6 is substantially the same as the route search standby operation of the first embodiment shown in FIG. 4, and the embodiment shown in FIG. 1 is substantially the same as the route search operation of FIG. 1 except that a measurement operation of the driving pattern information 511 by the driving pattern detection unit 107 is added. Therefore, the route search standby operation and the route search operation in the second embodiment will be described using the flowcharts of FIGS. 4 and 5 without using a new flowchart.

  That is, regarding the route search standby operation shown in FIG. 4, in the second embodiment, in addition to the current position measuring operation of the vehicle in step S1 in the first embodiment, the terminal device 100a is driven by a vehicle on which the terminal device 100a is mounted. The operation pattern detection unit 107 is used to perform an operation of constantly measuring the driver's operation pattern information 511 (hereinafter referred to as an operation pattern information measurement operation). For example, a driving pattern information measurement operation is performed such as avoiding a right turn in a place where there is no right turn lane using past driving locus information or the like, or a road having a width of 5.5 m or less does not pass. The history of operation pattern information measurement operation accumulated at this time is recorded as operation pattern information 511.

  Regarding the route search operation shown in FIG. 5, in the second embodiment, when the terminal device 100 performs a route search in step S <b> 11, the route search unit 103 performs traffic flow information 501, traffic jam information 502, and driving pattern information 511. Are used to dynamically perform a route search, and a route search result 503 is calculated. Note that step S12 to step S17 in FIG. 5 are the same as those in the first embodiment, and a description thereof will be omitted.

  In the second embodiment, the driving pattern detection unit 107 responds to the driving pattern as described above, so that the route search result 503 transmitted from the terminal device 100a to the server device 200 follows the driving pattern unique to the driver. As a result, the rate at which the vehicle deviates from the predetermined route can be reduced as a result. That is, the number of reroute searches due to deviation from a predetermined route and the number of traffic flow calculations associated with the route change can be reduced. As a result, the load on the terminal device 100 and the server device 200 can be reduced. Is possible.

<Embodiment 3>
FIG. 7 is a configuration diagram of a terminal device according to Embodiment 3 in the traffic guidance system shown in FIG. The terminal device 100b according to the third embodiment shown in FIG. 7 is different from the terminal device 100 according to the first embodiment shown in FIG. 2 in that the intention input unit 108 selects a route according to the driver's intention from a plurality of routes. Is only added. Accordingly, in the third embodiment shown in FIG. 7, the code is changed to a terminal device 100b in order to distinguish it from the terminal device 100 of the first embodiment shown in FIG. The intention input unit 108 can be realized by a push button or voice input means.

  The basic operation of the route search in the terminal device 100b of the third embodiment shown in FIG. 7 is the same as the route search standby operation of the first embodiment shown in FIG. 4, and the first embodiment shown in FIG. This is almost the same as the route search operation of FIG. 5 except that an operation for selecting a desired route from a plurality of routes by the intention input unit 108 is added. Therefore, the route search standby operation and the route search operation in the third embodiment will be described using the flowcharts of FIGS. 4 and 5 without using a new flowchart.

  The route search standby operation in the terminal device 100b of the third embodiment shown in FIG. 7 is the same as that in FIG. Further, regarding the route search operation shown in FIG. 5, in the third embodiment, when the terminal device 100 b performs a route search in step S <b> 11, the route search unit 103 operates using the traffic flow information 501 and the traffic jam information 502. A realistic route search. At this time, the route search unit 103 displays a plurality of pieces of route information on the display unit 104 and causes the driver to select which route to select. At this time, the driver uses the intention input unit 108 to select a route that suits his / her intention from a plurality of routes, and uses the selected route information as a route search result 503. Note that steps S12 to S17 in FIG. 5 are the same as those in the first embodiment, and thus description thereof is omitted.

  In the third embodiment, when the decision making unit 108 performs the route selection as described above, the route search result 503 transmitted from the terminal device 100b to the server device 200 becomes in accordance with the driver's intention, and the result In particular, the rate at which the vehicle deviates from the predetermined route can be reduced. That is, according to the terminal device of the third embodiment, as in the second embodiment, the number of reroute searches due to deviation from a predetermined route and the number of traffic flow calculations associated with the route change are reduced. The load on the terminal device and the server device can be reduced.

  In the traffic guidance system of the present invention, a terminal device mounted on a vehicle and a server device that performs traffic flow prediction can perform traffic flow prediction close to reality by repeating information exchange while mutually feeding back information. Therefore, it is possible to obtain accurate time information for a desired target point. Therefore, if a navigation system that is widely used today and the traffic guidance system of the present invention are used in combination, it can be effectively used as a road traffic control system.

Schematic configuration diagram of a traffic guidance system common to each embodiment of the present invention Configuration diagram of a terminal device according to Embodiment 1 in the traffic guidance system shown in FIG. Configuration diagram of a server device in the traffic guidance system shown in FIG. The flowchart which shows the flow of the route search standby operation | movement of the traffic guidance system in Embodiment 1 of this invention. The flowchart which shows the flow of the route search operation | movement of the traffic guidance system in Embodiment 1 of this invention. Configuration diagram of a terminal device according to Embodiment 2 in the traffic guidance system shown in FIG. Configuration diagram of terminal apparatus according to Embodiment 3 in the traffic guidance system shown in FIG.

Explanation of symbols

100, 100a, 100b Terminal device 101 Terminal communication unit 102 Traffic flow information accumulation unit 103 Route search unit 104 Display unit 105 Traffic jam information acquisition unit 106 Position acquisition unit 107 Driving pattern detection unit 108 Intention input unit 200 Server device 201 Server communication unit 202 Terminal information management unit 203 Traffic flow calculation unit 204 Traffic condition detection unit 501 Traffic flow information 502 Congestion information 503 Route search result 504 Terminal information 505 Traffic condition 511 Driving pattern information

Claims (9)

A traffic guidance system in which a terminal device mounted on a vehicle and performing a route search and a server device installed on the ground and simulating a traffic flow are connected to a network, and the traffic route is predicted by predicting the traffic flow. There,
The terminal device
If the vehicle deviates from the predetermined route from the route search result of the vehicle on which it is mounted, the corrected route search is performed and the corrected route search result is transmitted to the server device as the latest route information. Equipped with an optimum route search means for performing a simple route search,
The server device
Traffic guidance system comprising traffic flow information transmitting means for simulating traffic flow using the latest route information transmitted from the terminal device and transmitting the latest traffic flow information as a result of the simulation to the terminal device . The traffic guidance system according to claim 1, wherein the terminal device further includes driving pattern detection means for measuring driving pattern information of the vehicle when obtaining the corrected route search result. The traffic guidance system according to claim 1 or 2, wherein the terminal device further includes intention input means for selecting a route in accordance with a driver's intention from a plurality of routes when obtaining the corrected route search result. A terminal mounted on a vehicle to communicate with the server device in order to cause the server device installed on the ground to perform traffic flow simulation and to perform an optimum route search based on the traffic flow information predicted by the server device A device,
If the vehicle deviates from a predetermined route from the route search result of the vehicle on which it is mounted, search for a corrected route, send the corrected route search result to the server device as the latest route information, A terminal device comprising optimum route searching means for acquiring the latest traffic flow information from a server device and performing an optimum route search. The optimum route searching means is
Terminal communication means for receiving current traffic flow information from the server device via a network;
Traffic flow information storage means for storing the traffic flow information received by the terminal communication means;
Route search means for performing a route search based on the traffic flow information stored in the traffic flow information storage means, and transmitting a route search result and terminal specific information to the server device via the terminal communication means;
Display means for displaying the traffic flow information transmitted from the server device and stored in the traffic flow information storage means and the route search result transmitted by the route search means to the server device;
A traffic information acquisition means for receiving traffic information from a traffic information providing means installed on the ground;
The terminal device according to claim 4, further comprising: a position acquisition unit that measures a current position of the terminal device and transmits the current position to the route search unit. The terminal device according to claim 5, further comprising driving pattern detection means for measuring driving pattern information of the vehicle when obtaining the corrected route search result. The terminal device according to claim 5, further comprising intention input means for selecting a route in accordance with a driver's intention from a plurality of routes when obtaining the corrected route search result. A server device installed on the ground to communicate with a terminal device mounted on a vehicle to perform a route search and perform a traffic flow simulation,
A server device comprising traffic flow information transmitting means for executing a traffic flow simulation using the latest route information transmitted from the terminal device and transmitting the latest traffic flow information as a result thereof to the terminal device. The traffic flow information transmitting means includes
Server communication means for receiving terminal information including a route search result and terminal-specific information from the terminal device;
Terminal information management means for managing terminal information received by the server communication means for each terminal device;
A traffic flow calculating means for simulating a traffic flow based on the traffic situation and the terminal information and calculating the traffic flow information;
Traffic condition detection means for detecting and storing current traffic conditions based on image information acquired by image input means installed on the ground;
The server apparatus according to claim 8, comprising:

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