Information processing device

Abstract

To improve convenience of a route guidance.SOLUTION: An information processing device includes: a storage section for storing evaluation reference information which indicates evaluation reference of a road for each road on which a vehicle can travel; a reception section for receiving evaluation information that has been input as evaluation related to the road from a user of the vehicle which travels on the travelable road from a communication device of the vehicle and also receiving relevant information related to the vehicle that has transmitted the evaluation information; a calculation section for calculating integrated evaluation information which indicates evaluation of the plurality of users who have traveled during a predetermined time for each road on which the vehicles travel based on the evaluation information received from the plurality of communication devices during the predetermined time; an extraction section for extracting the road where a difference between the evaluation indicated by the integrated evaluation information and the evaluation reference indicated by the evaluation reference information is equal to or more than a predetermined value; and an estimation section for estimating a change of a state of the extracted road based on the relevant information related to the vehicle that has traveled on the road extracted by the extraction section.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an information processing device. [Background technology]

[0002] BACKGROUND ART Conventionally, there have been proposed techniques for providing route guidance to a driver in accordance with driving conditions or road traffic conditions when driving a vehicle.

[0003] Patent Document 1 proposes a technology for selecting a route that meets the driver's needs or preferences when presenting a route to the driver from multiple routes. The technology described in Patent Document 1 presents a route selected according to the driver's preferences, thereby realizing route guidance that is suitable for the driver. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-053196 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 1 is limited to selecting a route from multiple routes according to the driver's preference, and does not take into consideration changes in road conditions. In other words, when road conditions change, the driver's evaluation of the route guidance that includes that road may change. In order to improve driver satisfaction, a process that responds to such changes in evaluation is required.

[0006] In view of the above problems, the present invention aims to provide a technology that improves convenience by estimating changes in the road conditions in response to changes in the driver's or other driver's evaluation of the road, thereby enabling processing in response to changes in the road conditions. [Means for solving the problem]

[0007] In order to achieve the above object, in one embodiment of the present disclosure, a storage unit stores evaluation criteria information indicating criteria for evaluating each road that a vehicle can travel on, and a communication device for receiving evaluation information input from a user of a vehicle that has traveled on the road as an evaluation of the road, and related information related to the vehicle that transmitted the evaluation information. Information indicating the type of vehicle a calculation unit that calculates, for each road on which a vehicle has traveled during a predetermined time period, integrated evaluation information indicating evaluations by a plurality of users on the road during the predetermined time period based on the evaluation information received from the plurality of communication devices; an extraction unit that extracts roads on which a difference between the evaluation indicated in the integrated evaluation information and the evaluation standard indicated in the evaluation standard information is equal to or greater than a predetermined value; Vehicle size recognizable from vehicle type Based on the extracted roads Width or height an estimation unit for estimating a change in The width or height of the road, corresponding to the size of the vehicle that can be recognized from the type of vehicle. changes The road Information to guide you through roads that are different from the original road ,car Both No. and a communication control unit that transmits the information to a receiving device. [Effects of the Invention]

[0008] According to the above-described embodiment, a technology is provided that improves convenience by estimating changes in road conditions and enabling processing in accordance with the changes in road conditions. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing an example of a schematic configuration of a route guidance control system according to the first embodiment. [Figure 2] FIG. 2 is a sequence diagram showing the overall processing flow in the route guidance control system according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the invention will be described with reference to the drawings.

[0011] [Configuration of the first embodiment] Fig. 1 is a diagram showing an example of a schematic configuration of a route guidance control system according to a first embodiment. The route guidance control system 1 shown in Fig. 1 includes a vehicle 10 and a management server 20 (an example of an information processing device), which are communicably connected via a public network 50. The route guidance control system 1 is a computer system for providing route guidance to the driver of the vehicle 10.

[0012] The route guidance control system 1 according to this embodiment includes a plurality of vehicles 10. As a result, the route guidance control system 1 can collect data on routes traveled by the plurality of vehicles 10, provide information to the vehicles 10 based on the collected data, and set routes to be traveled by the vehicles 10.

[0013] As will be described later, the vehicle 10 is equipped with a communication device 104 and communicates with the management server 20 via the public network 50. This allows the vehicle 10 to transmit data related to the vehicle 10 (itself) to the management server 20 and receive data related to the control of the vehicle 10 (itself).

[0014] The public network 50 includes, for example, a wide area network (WAN). The wide area network may include, for example, a mobile communication network terminated at a base station. The wide area network may also include, for example, a satellite communication network using a communication satellite. The wide area network may also include, for example, the Internet network. The public network 50 may also include, for example, a wireless short-range communication line such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).

[0015] The management server 20 (an example of an information processing device) manages data received from the vehicle 10 and estimates changes in road conditions based on the data. Changes in road conditions include changes in the environment around the road as well as changes in the road itself. Changes in the environment around the road include, for example, an increase or decrease in the number of pedestrians in the morning and evening due to an increase or decrease in the number of buildings such as schools.

[0016] The data that the management server 20 receives from the vehicle 10 includes an evaluation value for the route traveled by the vehicle 10. The evaluation value is a value indicating an evaluation of the route that is input by an operator or the like after traveling the route.

[0017] However, there may be cases where the conditions of the road on which the vehicle 10 is traveling change. When the road conditions change, it is considered that the evaluation value input by the driver will also change. Therefore, the management server 20 according to this embodiment estimates that, if there is a large change in the evaluation value during a predetermined period compared to the period before, there has been a change in the conditions of the road on the route for which the evaluation value was input.

[0018] Furthermore, it is considered that the evaluation value input by the driver differs depending on the driver's qualities and the (model of) vehicle 10 that the driver is driving. Therefore, when the evaluation value changes, the management server 20 estimates what kind of change in road conditions has occurred based on information about the route traveled, the model of the vehicle 10, and the demographics of the driver.

[0019] For example, if the evaluation value from a large vehicle among the vehicles 10 traveling on a specified road becomes smaller, the management server 20 presumes that changes have been made to impose restrictions on the road width or height on that specified road.

[0020] As another example, if the evaluation value of vehicles 10 traveling on a specified road in the morning and evening becomes smaller, the management server 20 assumes that the specified road has become difficult to travel on because it is being used for commuting to work or school, etc.

[0021] As another example, if the evaluation values ​​of all vehicles 10 traveling on a specified road become small, the management server 20 assumes that a discrepancy has occurred between the road indicated in the route guidance and the local road due to reasons such as the construction of another road along the specified road.

[0022] Based on the above-described estimation results, the management server 20 measures map information, updates the map information, or modifies route guidance for the vehicle 10. Note that the above-described estimation is shown as an example, and any estimation may be performed as long as it is based on an evaluation value. Next, a description will be given of the vehicle 10 that transmits the evaluation value.

[0023] <Vehicle configuration> Vehicle 10 may be any vehicle that a user can board. In FIG. 1, a four-wheeled automobile is used as an example of vehicle 10. Vehicle 10 is not limited to automobiles equipped with a gasoline engine, but may also be a hybrid vehicle or an electric vehicle. Vehicle 10 is not limited to automobiles, but may also be other vehicles (for example, a railroad car).

[0024] The vehicle 10 includes an in-vehicle device 100, a GPS (Global Positioning System) module 101, an input device 102, an output device 103, and a communication device 104, which are connected by a bus 105.

[0025] The GPS module 101 is a device that measures the current position of the vehicle 10. The GPS module 101 includes an antenna (not shown) that receives signals from GPS satellites. The GPS module 101 provides information about the current position of the vehicle 10 to an in-vehicle device 100 that is mounted on the vehicle 10.

[0026] The output device 103 is, for example, a liquid crystal monitor, and is provided on an instrument panel, dashboard, or the like of the vehicle 10. The output device 103 displays an image based on image data (including text information) received from the in-vehicle device 100. In this way, the output device 103 can display an image showing a proposal of a recommended function based on control by the CPU 110. The output device 103 may also include a speaker. In other words, the output device 103 may simultaneously display an image on the liquid crystal monitor and output sound from the speaker.

[0027] The input device 102 includes, for example, a contact-type touch sensor provided on the surface of a liquid crystal monitor of the output device 103. When the input device 102 touches a predetermined area of ​​an image displayed on the output device 103, a signal indicating that the area has been touched is output to the in-car device 100. This allows the in-car device 100 to accept operations from the user. The input device 102 may also include mechanical buttons or the like. Even in this case, the input device 102 outputs a signal indicating an operation on the mechanical button to the in-car device 100.

[0028] The communication device 104 communicates with an external device (e.g., the management server 20) via the public network 50. For example, the communication device 104 communicates using a communication standard such as 5G (5th generation mobile communication system), LTE (Long Term Evolution), or Wi-Fi (registered trademark). Furthermore, the communication device 104 may include a wireless short-range communication line such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).

[0029] The in-vehicle device 100 has a function of transmitting and receiving signals to and from each component such as a GPS module 101, an input device 102, an output device 103, and a communication device 104, and performs various processes based on the signals received from each component. The in-vehicle device 100 also has a function of providing route guidance from the current position to the destination while the vehicle 10 is traveling.

[0030] The in-vehicle device 100 includes a CPU 110, a storage device 120, and an input / output I / F (interface) .

[0031] The input / output I / F 130 is connected to the GPS module 101, the input device 102, the output device 103, the communication device 104, and the like, which are mounted on the vehicle 10, and transmits and receives various information.

[0032] Various programs and data such as initial setting values ​​are stored in advance in the storage device 120. The various programs stored in the storage device 120 include a control program for controlling the in-vehicle device 100.

[0033] The storage device 120 includes a map information storage unit 121, a route evaluation information storage unit 122, a driver information storage unit 123, and a vehicle information storage unit .

[0034] The map information storage unit 121 stores map information for specifying the route along which the vehicle 10 will travel. In the present embodiment, the map information for specifying the route along which the vehicle 10 will travel is stored in the storage device 120, but the map information may be received from the management server 20 each time route guidance is provided.

[0035] The route evaluation information storage unit 122 stores an evaluation value (an example of evaluation information) for the route input by the driver or the like after the in-vehicle device 100 has provided route guidance for the vehicle 10 to the destination. In this embodiment, a case will be described in which the evaluation information is an evaluation value (for example, a numerical value), but the evaluation information may also be characters, symbols, or the like.

[0036] The driver information storage unit 123 stores information about the driver who drives the vehicle 10. The driver information includes, for example, gender and age. Furthermore, the driver information may include at least one of the number of years since obtaining a driver's license and information indicating whether the driver is an experienced driver.

[0037] The vehicle information storage unit 124 stores information about the vehicle 10. The information about the vehicle 10 includes, for example, the model of the vehicle 10.

[0038] The CPU 110 performs various controls by executing various programs stored in the storage device 120. For example, the CPU 110 controls route guidance for the vehicle 10 and also performs processing related to evaluation of the route traveled after route guidance is provided.

[0039] That is, after providing route guidance for the vehicle 10, when the on-board device 100 according to this embodiment receives input of an evaluation value (an example of evaluation information) regarding the route guided by the vehicle 10, the on-board device 100 transmits the evaluation value to the management server 20 using the communication device 104. This allows the management server 20 to detect changes in road conditions based on the received evaluation value.

[0040] The CPU 110 of this embodiment includes, for example, a route guidance control unit 111, an input receiving unit 112, a communication control unit 113, and a detection information processing unit 114 as functional units realized by executing one or more programs installed in the storage device 120.

[0041] The route guidance control unit 111 refers to the map information stored in the map information storage unit 121 and provides route guidance from the current position of the vehicle 10 detected by the GPS module 101 to the destination. For example, the route guidance control unit 111 displays the map information stored in the map information storage unit 121 on the output device 103, and also displays the route along which the vehicle 10 will travel on the map information.

[0042] After guiding the vehicle 10 to the destination, the route guidance control unit 111 according to this embodiment displays on the output device 103 an evaluation input screen that prompts the user to input an evaluation value for the route.

[0043] The evaluation value for a route may be a value that indicates the driver's degree of satisfaction with the route. For example, the evaluation value may be a value indicated on a 10-point scale or a 2-point scale.

[0044] The input receiving unit 112 receives input of an operation performed by a driver or the like via the input device 102. For example, the input receiving unit 112 receives input of an evaluation value on an evaluation input screen. Then, the input receiving unit 112 associates the received input evaluation value with information indicating the route to be evaluated, and registers the associated evaluation value in the route evaluation information storage unit 122. The information regarding the route includes, in addition to information indicating the route, the date and time when the vehicle 10 traveled the route, the time required to travel the route, and the like.

[0045] The input receiving unit 112 according to this embodiment will be described as a method in which the driver of the vehicle 10 inputs an evaluation value for each route including multiple roads from a departure point to a destination, but the input of the evaluation value is not limited to a route, and the input of an evaluation value may be received for each road traveled by the vehicle 10. Furthermore, when receiving an input of an evaluation value from the driver, the input receiving unit 112 may also receive an input as to which road the evaluation value corresponds.

[0046] The communication control unit 113 uses the communication device 104 to send and receive information to and from an external device (for example, the management server 20).

[0047] For example, the communication control unit 113 transmits the input evaluation value for each route registered in the route evaluation information storage unit 122 to the management server 20 together with information about the route, vehicle information about the vehicle 10, and driver information. This allows the management server 20 to collect information about the route traveled by the vehicle 10. Furthermore, the management server 20 can detect changes in road conditions based on the collected information.

[0048] Then, the communication control unit 113 receives, via the communication device 104, detection information from the management server 20 for performing processing in response to changes in road conditions.

[0049] The detection information is information for the management server 20 to perform processing based on changes in road conditions detected based on the evaluation values ​​collected from the vehicle 10. By the on-board device 100 performing processing indicated by the detection information, it is possible to improve the driver's satisfaction when the vehicle 10 travels along a route.

[0050] For example, the detection information may include information for updating the map information stored in the map information storage unit 121 of the storage device 120. As another example, the detection information may include information for changing the route on which the vehicle 10 travels.

[0051] The detected information processing unit 114 performs processing corresponding to the received detected information. For example, if the detected information includes difference information for updating the map information, the detected information processing unit 114 updates the map information stored in the map information storage unit 121 with the difference information.

[0052] Furthermore, if the detection information includes route information for not using a specific road during a specific time period (for example, morning or evening), the detection information processing unit 114 assigns attribute information to the road in the map information stored in the map information storage unit 121 so that it will not be selected as a route during that specific time period.

[0053] In the vehicle 10 according to this embodiment, the above-described control can be performed to improve the driver's satisfaction level when receiving route guidance.

[0054] <Management Server Configuration> As shown in FIG. 1, the management server 20 includes a CPU 210, a storage device 220, and a communication device 230, which are connected by a bus 250.

[0055] The communication device 230 communicates with an external device (e.g., the vehicle 10) via the public network 50. For example, the communication device 230 communicates using a communication standard such as 5G (5th Generation Mobile Communication System), LTE (Long Term Evolution), or Wi-Fi (registered trademark). Furthermore, the communication device 230 may include a wireless short-range communication line such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).

[0056] Various programs and data such as initial setting values ​​are stored in advance in the storage device 220. The various programs stored in the storage device 220 include a control program for controlling the management server 20.

[0057] The storage device 220 includes a data accumulation unit 221 , a map information storage unit 222 , and an evaluation criterion information storage unit 223 .

[0058] The data storage unit 221 stores information transmitted from the vehicle 10. The data storage unit 221 is not limited to storing all information transmitted from the vehicle 10, but stores at least information transmitted during a predetermined period.

[0059] The predetermined period (an example of a predetermined time) is a period determined in advance for detecting changes in road conditions, and is, for example, seven days.

[0060] The information transmitted from the vehicle 10 and stored in the data storage unit 221 includes an evaluation value for each route, information about the driver who input the evaluation value (e.g., the gender and age of the driver), and vehicle information (e.g., the vehicle type) indicating the vehicle 10 that transmitted the evaluation value. The management server 20 can recognize the size of the vehicle 10 (e.g., whether or not the vehicle 10 is a large vehicle) from the vehicle type.

[0061] The map information storage unit 222 stores map information for identifying the route along which the vehicle 10 will travel.

[0062] The evaluation criterion information storage unit 223 stores, for each road (stored in the map information storage unit 222) on which the vehicle 10 can travel, an evaluation criterion value (evaluation information) indicating the criteria for evaluating the road. The evaluation criterion value may be set, for example, based on an evaluation value input by the vehicle 10 a predetermined period of time ago. The evaluation criterion value input to the evaluation criterion information storage unit 223 according to this embodiment is used for comparison with evaluation values ​​input by the driver of the vehicle 10 or the like during a predetermined period of time.

[0063] The CPU 210 of this embodiment includes, for example, a communication control unit 211, a calculation unit 212, an extraction unit 213, an estimation unit 214, a detection information generation unit 215, and a detection information processing unit 216 as functional units realized by executing one or more programs installed in the storage device 220.

[0064] The communication control unit 211 uses the communication device 230 to transmit and receive information to and from an external device (for example, the in-vehicle device 100 of the vehicle 10).

[0065] For example, the communication control unit 211 (an example of a receiving unit) receives an evaluation value for each route input by the driver or the like of the vehicle 10 from the communication device 104 of the vehicle 10, and also receives information about the route traveled by the vehicle 10, vehicle information (an example of related information) of the vehicle 10, and driver information (an example of related information) from the communication device 104. The communication control unit 211 stores the received evaluation value for each route, information about the route, vehicle information, and driver information in the data accumulation unit 221.

[0066] The calculation unit 212 calculates, for each road, an average evaluation value (an example of integrated evaluation information) that indicates the average of the evaluation values ​​of multiple drivers (an example of multiple users) who traveled during a predetermined period (an example of a predetermined time) based on the evaluation values ​​received from the communication devices 104 of multiple vehicles 10. In this embodiment, any method may be used to extract the evaluation value of each road included in a route from the evaluation values ​​of the route including multiple roads, regardless of whether it is a well-known method. Alternatively, the communication control unit 211 may receive the evaluation value for each road from the communication device 104.

[0067] The extraction unit 213 extracts roads for which the difference between the average evaluation value for each road and the evaluation reference value stored in the evaluation reference information storage unit 223 is equal to or greater than a predetermined value. The predetermined value is a criterion for determining whether a change has occurred, and is a value determined depending on the embodiment, so its explanation will be omitted.

[0068] The estimation unit 214 estimates a change in the road based on information about the route, vehicle information (an example of related information), and driver information (an example of related information) received from the communication device 104 of the vehicle 10 that traveled on the road extracted by the extraction unit 213. Then, the estimation unit 214 generates change information indicating the estimated change in the road.

[0069] For example, if the evaluation value from a large vehicle changes more than the evaluation value from a small vehicle over a specified period, the estimation unit 214 generates change information indicating that there is a high possibility that a change has been made to restrict the road width or height on a specified road.

[0070] As another example, if the evaluation value from a vehicle 10 traveling in the morning and evening changes more over a specified period than the evaluation value from a vehicle 10 traveling at other times, the estimation unit 214 generates change information indicating that it is highly likely that travel on the specified road has become difficult due to commuting to work or school, etc.

[0071] As another example, if the degree of change over a specified period is large for the evaluation values ​​of all vehicles 10 traveling on a specified road, the estimation unit 214 generates change information indicating that there may be a discrepancy between the road indicated in the route guidance and the local road due to reasons such as the construction of another road in the middle of the specified road.

[0072] The change information generated by the estimation unit 214 may be output to an administrator of the management server 20. This allows the administrator to confirm whether the change information is appropriate or to make an inquiry, etc. Then, the administrator may delete or correct inappropriate change information from the change information generated by the estimation unit 214.

[0073] The estimation unit 214 may also check whether the content indicated in the change information is appropriate in the image data of the imaging device that captures the road, and may then delete inappropriate change information.

[0074] Then, based on the change information, the detection information generation unit 215 generates detection information for executing processing corresponding to the change. For example, if the change information indicates that there is a possibility that a mismatch has occurred between the road indicated in the route guidance and the local road, the detection information generation unit 215 acquires information about the new road and generates detection information including difference information for including the information about the new road in the map information.

[0075] As another example, if the change information indicates that there is a high possibility that the road width or height has been changed to impose restrictions, the detection information generation unit 215 generates detection information including attribute information for guiding the large vehicle along a road other than the road in question.

[0076] The communication control unit 211 transmits the generated detection information to the communication device 104 of the vehicle 10. As a result, the in-vehicle device 100 of the vehicle 10 can provide appropriate route guidance in response to changes in road conditions, in accordance with the detection information received by the communication device 104.

[0077] The detected information processing unit 216 performs processing corresponding to the generated detected information. For example, if the detected information includes difference information for updating the map information, the detected information processing unit 114 updates the map information stored in the map information storage unit 222 with the difference information.

[0078] Next, the overall processing flow in the route guidance control system 1 according to this embodiment will be described.

[0079] FIG. 2 is a sequence diagram showing the overall processing flow in the route guidance control system 1 according to this embodiment.

[0080] The route guidance control unit 111 of the in-vehicle device 100 of the vehicle 10 refers to the map information stored in the map information storage unit 121 and provides route guidance from the current position of the vehicle 10 detected by the GPS module 101 to the destination (S2001).

[0081] The input receiving unit 112 receives an input of an evaluation value of a route to a destination (S2002).

[0082] The communication control unit 113 transmits the evaluation value of the route, the vehicle information of the vehicle 10, and the driver information who drove to the route to the management server 20 (S2003).

[0083] The communication control unit 211 of the management server 20 stores the evaluation value of the route, the vehicle information of the vehicle 10, and the driver information who drove to the route in the data storage unit 221 (S2004).

[0084] The in-vehicle device 100 and the management server 20 perform the processes of S2001 to S2004 for a predetermined period of time, whereby the data accumulation unit 221 stores the evaluation value of each route for the predetermined period of time.

[0085] Then, the calculation unit 212 calculates an average evaluation value (an example of integrated evaluation information) for each road based on the evaluation values ​​received from the communication devices 104 of multiple vehicles 10 during a predetermined period (an example of a predetermined time) (S2005).

[0086] The extraction unit 213 extracts roads for which the difference between the average evaluation value for each road and the evaluation standard value for each road stored in the evaluation standard information storage unit 223 is greater than or equal to a predetermined value, in other words, extracts roads for which the change in evaluation value is large (S2006).

[0087] The estimation unit 214 estimates a change in the condition of the extracted road based on route-related information, vehicle information (an example of related information), and driver information (an example of related information) from the vehicle 10 that traveled on the extracted road (S2007). Then, the estimation unit 214 generates change information indicating the estimated change.

[0088] Then, based on the change information indicating the change, the detection information generating unit 215 generates detection information for executing processing corresponding to the change (S2008).

[0089] The communication control unit 211 transmits the detection information to each of the plurality of vehicles 10 (S2009).

[0090] Then, the detected information processing unit 216 performs processing corresponding to the generated detected information (for example, updating the map information stored in the map information storage unit 222) (S2010).

[0091] Furthermore, the detection information processing unit 114 of the in-vehicle device 100 performs processing corresponding to the received detection information (for example, updating the map information stored in the map information storage unit 121) (S2011).

[0092] In the route guidance control system 1 according to this embodiment, by performing the above-described processing, changes in road conditions are estimated based on the evaluation values ​​input by the driver or the like, and processing corresponding to the estimation results is performed. As a result, appropriate route guidance can be provided to the vehicle 10 when changes in road conditions occur. Therefore, the driver's satisfaction with the route guidance can be improved. Furthermore, the management server 20 according to this embodiment estimates changes in road conditions and performs processing corresponding to the changes in road conditions, thereby improving convenience for the driver traveling on the road.

[0093] The in-vehicle device 100 may have another processor, a field-programmable gate array (FPGA), or an application-specific integrated circuit (ASIC) instead of the CPU 110. That is, the functions of the in-vehicle device 100 may be realized by hardware. The FPGA or ASIC may also include a communication interface function or an input / output interface function.

[0094] In the above-described embodiment, the programs executed by each of CPU 110 and CPU 210 may be stored in a computer-readable recording medium. In this case, the programs are downloaded from the recording medium to a memory such as a storage device. Examples of the recording medium include a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), and a USB (Universal Serial Bus) memory. The programs may also be downloaded to at least one of the in-vehicle device 100 and the management server 20 via a network.

[0095] Although the embodiments for carrying out the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and improvements are possible within the scope that does not depart from the gist of the present invention. [Explanation of symbols]

[0096] 10 vehicles 100 Onboard equipment 101 GPS Module 102 Input Device 103 Output Device 104 Communication equipment 110 CPU 111 Route guidance control unit 112 Input reception unit 113 Communication control section 114 Detection information processing section 120 Storage device 121 Map information storage unit 122 Route evaluation information storage unit 123 Driver information storage unit 124 Vehicle information storage unit 20 Management Server 210 CPU 211 Communication control section 212 Calculation Unit 213 Extraction part 214 Estimation Department 215 Detection information generation unit 216 Detection information processing section 220 Storage device 221 Data Storage Unit 222 Map information storage unit 223 Evaluation criteria information storage unit 230 Communication Equipment 250 Bus

Claims

[Claim 1] a storage unit that stores, for each road on which a vehicle can travel, evaluation criteria information that indicates criteria for evaluating the road; a receiving unit that receives, from a communication device of the vehicle, evaluation information input as an evaluation of the road by a user of a vehicle that has traveled on the drivable road, and receives, from the communication device, information indicating the type of the vehicle as related information related to the vehicle that transmitted the evaluation information; a calculation unit that calculates, based on the evaluation information received from the plurality of communication devices at a predetermined time, integrated evaluation information indicating evaluations by a plurality of users who traveled on each road on which the vehicle traveled at the predetermined time; an extraction unit that extracts roads for which the difference between the evaluation indicated in the integrated evaluation information and the evaluation standard indicated in the evaluation standard information is equal to or greater than a predetermined value; an estimation unit that estimates a change in width or height of the extracted road based on a size of the vehicle that can be recognized from the type of the vehicle that has traveled on the road extracted by the extraction unit; a communication control unit that transmits, to the communication device of the vehicle, information for providing route guidance along a road different from the road whose width or height has changed, the road corresponding to a size of the vehicle that can be recognized from the type of the vehicle; An information processing device comprising:

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