Route searching device and route search program

Abstract

To allow a user to easily determine a risk of occurrence of waiting for crossing in a route search to a peripheral facility.SOLUTION: A peripheral facility search section 114 searches for facilities related to genre information located within a predetermined range from a current position of an own vehicle on the basis of the genre information of facilities designated by a user. A peripheral facility candidate display control section 115 displays candidates of facilities related to one or more pieces of hit genre information. A route search section 112 searches for a route to the respective candidates of facilities related to the one or more pieces of genre information. The route search section 112 determines a risk of closing of a crossing when an own vehicle passes a crossing by referring to an estimated time when the own vehicle passes a crossing and time table data of a station ahead and behind across the crossing when the crossing is included in a route to the candidates of facilities. The peripheral facility candidate display control section 115 displays warning information for candidates of facilities other than those with a "low" risk of closing of crossings in the route.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a route search device and a route search program for searching for routes to surrounding facilities. [Background technology]

[0002] When using a car navigation system to drive and want to stop at a convenience store, gas station, etc., the user can use the nearby facility search function. The nearby facility search function searches for facilities of a specified category within a specified distance range from the current location. Normally, candidate facilities of the specified category are displayed in order of shortest distance from the current location. Even if the distance to the desired category of facility is short, it may take a long time to get there if there is a railroad crossing on the way.

[0003] Patent Document 1 discloses a technology for setting a route, in the case where a railway line exists on the route to a destination, determining which railway crossings on that line should be added to the route to set the route to the destination, and for determining which railway crossings should be added to the route by obtaining detailed operation information from the railway company in order to accurately calculate the arrival time at the destination. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-226767 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, to calculate the exact arrival time to the destination with certainty, it is necessary to constantly obtain information on train operations related to the railroad crossings ahead. This means that the information may need to be updated constantly, which is expected to place a strain on the route search process of the car navigation system.

[0006] Furthermore, even if such calculations were necessary for railroad crossings related to the route to the destination, in cases such as when a person wants to stop at a convenience store on the other side of the tracks, there is little need for the same level of certainty as for railroad crossings that are part of the route to the destination, and a certain degree of risk assessment is thought to be sufficient.

[0007] This embodiment has been made in consideration of these circumstances, and its purpose is to provide a technology that allows a user to easily determine the risk of waiting at a railroad crossing when searching for a route to a nearby facility. [Means for solving the problem]

[0008] In order to solve the above problem, a route search device according to one aspect of the present embodiment includes a surrounding facility search unit that searches for facilities related to genre information located within a predetermined range from the current location of the vehicle based on genre information of a facility specified by a user, a surrounding facility candidate display control unit that displays candidates for facilities related to one or more hit genre information, and a route search unit that searches for routes to each of the candidate facilities related to the one or more genre information. When a railroad crossing is included in the route to the candidate facility, the route search unit refers to the predicted time when the vehicle will pass the crossing and the timetable data of the stations before and after the crossing to determine the risk that the crossing will be closed when the vehicle passes the crossing, and the surrounding facility candidate display control unit displays warning information for candidates for facilities on the route that have a risk other than "low" that the crossing will be closed.

[0009] Any combination of the above components, and conversion of the expression of this embodiment between a method, an apparatus, a system, a recording medium, a computer program, etc. are also valid as aspects of this embodiment. Effect of the Invention

[0010] According to this embodiment, when searching for a route to a nearby facility, the user can easily determine the risk of waiting at a railroad crossing. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a route search device according to an embodiment. [Diagram 2] FIG. 1 is a diagram showing an example of a timetable for station A showing the departure times of railway cars heading from station A towards station B. [Diagram 3] FIG. 2 is a diagram showing an example of a timetable for Station B showing the departure times of railway cars heading from Station B towards Station A. [Figure 4] 1 is a diagram showing an example of a predicted time at which a train will pass through a railroad crossing, and the arrival and departure times of trains that will pass through the railroad crossing near the predicted time. FIG. [Diagram 5] FIG. 4 is a diagram showing an example of a map image display screen. [Figure 6] FIG. 13 is a diagram showing an example of a surrounding facility candidate display screen. [Figure 7] FIG. 13 is a diagram showing another example of the surrounding facility candidate display screen. [Figure 8] FIG. 13 is a diagram showing yet another example of the surrounding facility candidate display screen. [Figure 9] 4 is a flowchart showing a first operational example of a peripheral facility search function performed by the route search device according to the embodiment. [Figure 10] 10 is a flowchart showing a second operational example of a peripheral facility search function performed by the route search device according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] 1 is a diagram showing a configuration of a route search device 10 according to an embodiment. The route search device 10 is installed in a vehicle and functions as a car navigation system. The route search device 10 may be a dedicated device, or may be a smartphone or a tablet on which a route search application program is installed. The route search device 10 includes a control unit 11, a storage unit 12, a GPS (Global Positioning System) sensor 13, an inertial sensor 14, a display unit 15, an operation unit 16, and a wireless communication unit 17.

[0013] The GPS sensor 13 is an example of a GNSS (Global Navigation Satellite System) receiver, which detects the current position information of the route search device 10 by latitude, longitude, and altitude, and outputs the detected position information to the control unit 11. Specifically, the GPS sensor 13 receives radio waves including the respective transmission times from a plurality of GPS satellites, and calculates the latitude, longitude, and altitude of the reception point based on the plurality of transmission times included in the plurality of received radio waves.

[0014] The inertial sensor 14 may be, for example, a three-axis gyro sensor and a three-axis acceleration sensor, which detect angular velocity and acceleration in the XYZ directions applied to the three-axis gyro sensor and the three-axis acceleration sensor and output them to the control unit 11.

[0015] Display unit 15 includes a display such as a liquid crystal display, an organic EL display, or a mini LED display, and displays an image input from control unit 11. Operation unit 16 includes physical buttons and a touch panel, accepts a user's operation, and outputs an operation signal according to the user's operation to control unit 11. Display unit 15 and operation unit 16 may be configured as an integrated touch panel display.

[0016] The wireless communication unit 17 processes a wireless signal received via the antenna 17a and outputs information contained in the wireless signal to the control unit 11. For example, the antenna 17a may be an FM multiplex antenna or a beacon antenna, and the wireless communication unit 17 may be a VICS (Vehicle Information and Communication System) (registered trademark) receiver. The VICS receiver receives road traffic information such as congestion and traffic regulations and outputs the information to the control unit 11. The wireless communication unit 17 may also have a Wi-Fi (registered trademark) communication function or a Bluetooth (registered trademark) communication function.

[0017] The storage unit 12 is equipped with a large-capacity non-volatile recording medium, and includes a map data storage unit 121 and a timetable data storage unit 122. As the non-volatile recording medium, for example, a semiconductor memory card (e.g., an SD card), an optical disk (DVD, etc.), an HDD (Hard Disk Drive), or an SSD (Solid State Drive) can be used.

[0018] The map data included in the map data storage unit 121 and the timetable data stored in the timetable data storage unit 122 are provided by being stored, for example, in a semiconductor memory card. A user can update the map data and timetable data by inserting a semiconductor memory card storing the latest map data and timetable data into the route search device 10.

[0019] A semiconductor memory card on which the latest map data and timetable data are stored may be physically purchased from a vendor, or a user may download the latest map data and timetable data from a data provider site to a semiconductor memory card using a PC, etc. Also, the latest map data and timetable data may be directly downloaded to the storage unit 12 in the route search device 10 using Wi-Fi tethering on a smartphone, etc.

[0020] The control unit 11 includes a map display control unit 111, a route search unit 112, a facility genre reception unit 113, a surrounding facility search unit 114, and a surrounding facility candidate display control unit 115. The control unit 11 is realized by a combination of hardware resources and software resources, or by hardware resources alone. As hardware resources, a CPU, ROM, RAM, GPU (Graphics Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), and other LSIs can be used. As software resources, programs such as firmware can be used.

[0021] The map display control unit 111 reads map image data around the position information input from the GPS sensor 13 from the map data storage unit 121, and displays the map image on the display unit 15 by superimposing the current position of the vehicle on the map image. The map display control unit 111 estimates the current position of the vehicle based on the position information input from the GPS sensor 13 and the angular velocity and acceleration input from the inertial sensor 14. For example, by using the angular velocity and acceleration input from the inertial sensor 14, the current position of the vehicle inside a tunnel where GPS radio waves cannot reach can be estimated with high accuracy.

[0022] When the user sets a destination from the operation unit 16, the route search unit 112 refers to the map data storage unit 121 and searches for a route from the current location to the destination. When the user selects the searched route, route guidance to the destination begins. If the user wants to stop at a convenience store, gas station, etc. during route guidance, the user can use the surrounding facility search function. The user selects the surrounding facility search function from the operation unit 16 and specifies the type of facility they are looking for. The user may select the type of facility they are looking for from multiple selection candidates, or may enter it by text. The surrounding facility search function can be used even when route guidance to the destination is not being performed.

[0023] The facility genre receiving unit 113 receives genre information of the facility specified by the user, and passes it to the surrounding facility search unit 114. The surrounding facility search unit 114 searches for facilities related to the genre information located within a predetermined range from the current position of the vehicle. The surrounding facility search unit 114 may search within a 10 km radius from the current position of the vehicle, for example. Note that the search range may be specified by the user.

[0024] When the search process by the surrounding facility search unit 114 finds facilities related to one or more pieces of genre information, the surrounding facility candidate display control unit 115 causes the display unit 15 to display a selection screen for facility candidates related to the one or more pieces of genre information that were found.

[0025] The route search unit 112 searches for a route from the current position of the vehicle to each of the candidate facilities related to one or more hit genre information, with reference to the map data storage unit 121. The route search unit 112 determines whether or not a railroad crossing is included in the route to each of the candidate facilities. If a railroad crossing is included, the route search unit 112 determines the risk that the railroad crossing will be closed when the vehicle passes through it, with reference to the predicted time when the vehicle will pass through the railroad crossing and the timetable data of the stations before and after the crossing.

[0026] The route search unit 112 estimates the expected time when the vehicle will pass the railroad crossing based on the distance on the route from the current position to the railroad crossing, the legal speed limit for the road section from the current position to the railroad crossing, and the current time. If it is found from the VICS received information that congestion or traffic restrictions are occurring on the road section from the current position to the railroad crossing, the route search unit 112 stops the process of determining the risk that the railroad crossing is closed.

[0027] The route search unit 112 estimates the expected time that the railroad vehicle will pass through the railroad crossing based on the relationship between the position of the railroad crossing and the positions of the stations before and after the railroad crossing, and the railroad vehicle arrival and departure times included in the timetable data of the stations before and after the railroad crossing. The route search unit 112 checks the railroad vehicle arrival and departure times around the expected time that the vehicle will pass through the railroad crossing, which are included in the timetable data of the stations before and after the railroad crossing.

[0028] Fig. 2 is a diagram showing an example of a timetable for Station A, which lists the departure times of railway vehicles heading from Station A towards Station B. Fig. 3 is a diagram showing an example of a timetable for Station B, which lists the departure times of railway vehicles heading from Station B towards Station A. Stations A and B are located on either side of a railroad crossing.

[0029] The arrival time at Station B of a railway vehicle heading from Station A towards Station B is set to the departure time of the corresponding railway vehicle from Station B listed in the timetable of Station B minus, for example, one minute as a stop time. Similarly, the arrival time at Station A of a railway vehicle heading from Station B towards Station A is set to the departure time of the corresponding railway vehicle from Station A listed in the timetable of Station A minus, for example, one minute as a stop time. If the arrival time is listed in the timetable data, the listed arrival time is used. If the railway vehicle is an express train (for example, a limited express train, an express train, or a rapid train), the stations before and after the railroad crossing are set to the previous station closest to the crossing and the next station closest to the crossing among the stations where the express train stops.

[0030] The route search unit 112 refers to map data to calculate the line distance from the station before the crossing to the crossing and the line distance between the stations before and after the crossing. The route search unit 112 calculates the station-to-station required time between the departure time of the railway vehicle to be checked from the station before the crossing and the arrival time of the station after the crossing. The route search unit 112 calculates the station-to-station required time x (line distance from the previous station to the crossing / line distance between stations) to calculate the required time from the previous station to the crossing. The route search unit 112 adds the required time from the previous station to the crossing to the departure time of the railway vehicle to be checked from the station before the crossing to estimate the expected time at which the railway vehicle to be checked will pass the crossing.

[0031] The route search unit 112 determines the risk that the crossing will be closed when the vehicle passes through it based on the predicted time when the railroad vehicle will pass through the crossing and the predicted time when the vehicle itself will pass through the crossing. For example, if the difference between the predicted time when the vehicle itself will pass through the crossing and the predicted time when the railroad vehicle will pass through the crossing is, for example, 15 minutes or more, the route search unit 112 determines the risk as "low." If the difference between the two is, for example, less than 3 minutes, the route search unit 112 determines the risk as "high." If the difference between the two is, for example, 3 minutes or more but less than 15 minutes, the route search unit 112 determines the risk as "medium."

[0032] Fig. 4 is a diagram showing an example of the predicted time when the vehicle V1 passes through the railroad crossing and the arrival and departure times of railroad vehicles that pass through the railroad crossing around the predicted time. In the example shown in Fig. 4, the predicted time when the vehicle V1 passes through the railroad crossing is 15:05. The departure time from station A of a railroad vehicle heading from station A towards station B that passes through the railroad crossing around that time is 15:00, and the arrival time at station B is 15:04. The departure time from station B of a railroad vehicle heading from station B towards station A is 15:02, and the arrival time at station A is 15:06.

[0033] The predicted time that a railroad vehicle departing from Station A at 15:00 will pass through the railroad crossing is 15:01, and the predicted time that a railroad vehicle departing from Station B at 15:02 will pass through the railroad crossing is 15:05. As such, since it is predicted that a railroad vehicle departing from Station B at 15:02 will pass through the railroad crossing at 15:05, the risk that the crossing will be closed at the predicted time that host vehicle V1 will pass through the crossing is determined to be "high."

[0034] The surrounding facility candidate display control unit 115 displays warning information for facility candidates where there is a risk that a railroad crossing on the route is closed. The surrounding facility candidate display control unit 115 displays the warning information in a more conspicuous manner the higher the risk that the railroad crossing is closed. Possible conspicuous manners include displaying in a conspicuous color, displaying in large letters, blinking, etc. A combination of these displays is also possible.

[0035] When the user selects one candidate from the selection screen of facility candidates related to the genre information, the map display control unit 111 starts route guidance to the selected facility. When selecting one from multiple candidates, the user can use warning information about the risk of the crossing being closed as a basis for making a decision.

[0036] Fig. 5 is a diagram showing an example of a map image display screen. Fig. 6 is a diagram showing an example of a surrounding facility candidate display screen. The examples shown in Figs. 5 and 6 are examples of a situation in which a user in a vehicle V1 is searching for a convenience store using a surrounding facility search function.

[0037] The facility category receiving unit 113 receives "convenience store" as category information of the facility the user is searching for, and passes it to the surrounding facility searching unit 114. The surrounding facility searching unit 114 searches for convenience stores located within a predetermined range from the current position of the vehicle V1. In the example shown in Fig. 5 and Fig. 6, the search returns a hit for convenience store C1, convenience store C2, and convenience store C3.

[0038] The surrounding facility candidate display control unit 115 displays the found convenience stores C1, C2, and C3 as candidates in order of proximity to the current position of the vehicle V1 on the display unit 15. When the user selects one of the convenience stores, the map display control unit 111 starts route guidance from the current position to the selected convenience store.

[0039] In the example shown in Fig. 5, to go to the convenience store C1 closest to the current position of the vehicle V1, the vehicle needs to cross the railway crossing RC1. The route search unit 112 refers to the predicted time when the vehicle V1 will pass the railway crossing RC1 and the timetable data of stations A and B that are sandwiched between the railway crossing RC1, and determines the risk that the railway crossing will be closed when the vehicle V1 passes the railway crossing RC1. The surrounding facility candidate display control unit 115 displays warning information for a candidate convenience store C1 on the route that has a risk of the railway crossing RC1 being closed, as shown in Fig. 6. For example, the surrounding facility candidate display control unit 115 displays a warning message saying "Risk of waiting at the railway crossing" for candidates other than those with a risk of "low."

[0040] If the route search unit 112 refers to the timetable data and the current time is a time period when the number of trains passing through the crossing RC1 is equal to or greater than a predetermined number, the route search unit 112 may unconditionally determine that the risk of the crossing RC1 being closed is "high." The Ministry of Land, Infrastructure, Transport and Tourism defines a crossing that is blocked for 40 minutes or more per hour as a crossing that does not open. For example, a crossing that does not open is likely to occur in a time period when the number of trains passing through the crossing RC1 is 40 or more in total in both directions. In the example shown in FIG. 2 and FIG. 3, 40 or more trains in total in both directions are running during the 8 o'clock hour.

[0041] Fig. 7 is a diagram showing another example of the surrounding facility candidate display screen. Fig. 7 shows an example in which the risk of waiting at a railroad crossing on the route to the convenience store C1 is "high." The surrounding facility candidate display control unit 115 displays a warning message saying "High risk of waiting at a railroad crossing" in bold and in a conspicuous color on the candidate for the convenience store C1. The warning message may also be made to flash.

[0042] Fig. 8 is a diagram showing yet another example of the surrounding facility candidate display screen. Fig. 8 also shows an example in which the risk of waiting at a railroad crossing on the route to convenience store C1 is "high." The surrounding facility candidate display control unit 115 excludes the candidate convenience store C1 from the selection screen for convenience store candidates. In the example shown in Fig. 8, only convenience store C2 and convenience store C3 are displayed as selection candidates.

[0043] 9 is a flowchart showing a first operation example of the surrounding facility search function by the route search device 10 according to the embodiment. The facility category receiving unit 113 receives category information of a facility specified by a user (step S10). The surrounding facility search unit 114 searches for facilities related to the category information located within a predetermined range from the current position of the vehicle V1 (step S11). If no facility related to the category information is found (step S11: No), the search for the surrounding facilities ends.

[0044] If a facility related to the genre information is found (step S11: Yes), the nearby facility candidate display control unit 115 causes the display unit 15 to display a selection screen for facility candidates related to the one or more hit genre information (step S12). The route search unit 112 searches for a route from the current position of the vehicle V1 to each of the facility candidates related to the one or more hit genre information (step S13).

[0045] The route search unit 112 determines whether or not a railway crossing is included in the route to each candidate facility (step S14). If a railway crossing is not included in the route (step S14: No), the risk of waiting at a railway crossing is not determined. When the user selects one of the candidates from a selection screen of facility candidates related to the genre information in a later control process (not shown), the map display control unit 111 starts route guidance to the selected facility. If the user does not select a candidate, the search function for nearby facilities is terminated.

[0046] If the route includes a railroad crossing (step S14: Yes), the route search unit 112 reads out and refers to the timetable data of the stations before and after the railroad crossing from the timetable data storage unit 122 (step S15). The route search unit 112 estimates the expected time at which the vehicle V1 will pass the railroad crossing based on the distance on the route from the current position to the railroad crossing, the legal speed limit for the road section from the current position to the railroad crossing, and the current time (step S16). The route search unit 112 estimates the expected time at which the railroad vehicle will pass the railroad crossing near the expected time at which the vehicle V1 will pass the railroad crossing based on the relationship between the position of the railroad crossing and the positions of the stations before and after the railroad crossing, and the departure and arrival times of railroad vehicles included in the timetable data of the stations before and after the railroad crossing (step S17).

[0047] Based on the predicted time when the train will pass the crossing and the predicted time when the vehicle will pass the crossing, the route search unit 112 determines the risk that the crossing will be closed when the vehicle passes the crossing (step S18). If the risk is "medium" or "high" (step S18: medium, high), the surrounding facility candidate display control unit 115 displays warning information for the corresponding candidate that includes a crossing on the route (step S19). If the risk is "low" (step S18: low), the surrounding facility candidate display control unit 115 does not display warning information even for candidates that include a crossing on the route.

[0048] 10 is a flowchart showing an operation example 2 of the surrounding facility search function by the route search device 10 according to the embodiment. The processes from step S10 to step S15 are similar to those in the flowchart showing the operation example 1 shown in FIG. 9, and therefore the description thereof will be omitted.

[0049] If the route search unit 112 determines, as a result of referring to the timetable data, that the current time is a time period when the number of railway vehicles passing through the crossing is equal to or greater than a predetermined number (step S155: Yes), it unconditionally determines that the risk of the crossing being closed is "high." The surrounding facility candidate display control unit 115 displays warning information indicating a "high" risk on the corresponding candidate (step S19). If the time period is a time period when the number of railway vehicles passing through the crossing is less than a predetermined number (step S155: No), the process proceeds to step S16. The process from step S16 onwards is the same as that in the flowchart showing operation example 1 shown in FIG. 9, and therefore will not be described.

[0050] As described above, according to this embodiment, the expected time when a train will pass through a railroad crossing is estimated based on the timetable data of the stations before and after the railroad crossing, so that the risk of waiting at a railroad crossing can be efficiently determined without imposing a load on the route search process when searching for a route to a nearby facility. Since there is no need to receive information on the railroad timetable in real time, the risk of waiting at a railroad crossing can be determined while suppressing an increase in the load on the route search device 10.

[0051] According to this embodiment, when displaying candidates for facilities of a desired genre, warning information is displayed for candidates that have a risk of causing a railway crossing wait, allowing the user to recognize candidates that have a risk of causing a railway crossing wait. Also, by displaying conspicuous warning information for candidates that have a high probability of causing a railway crossing wait, the possibility that the user will unintentionally select a candidate that has a high probability of causing a railway crossing wait can be reduced. Also, by not displaying candidates that have a high probability of causing a railway crossing wait, the user can be prevented from selecting a candidate that has a high probability of causing a railway crossing wait.

[0052] The present invention has been described above based on an embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component and each treatment process, and that such modifications are also within the scope of the present invention.

[0053] For example, if the crossing is located a set distance away from the station, the crossing will close while a train heading toward the crossing is stopped at the station. In this case, the route search unit 112 sets the estimated time at which the train will pass the crossing to a range from the arrival time of the train at the station before the crossing to the estimated time at which the train will actually pass the crossing. [Explanation of symbols]

[0054] 10 route search device, 11 control unit, 111 map display control unit, 112 route search unit, 113 facility genre reception unit, 114 surrounding facility search unit, 115 surrounding facility candidate display control unit, 12 memory unit, 121 map data storage unit, 122 timetable data storage unit, 13 GPS sensor, 14 inertial sensor, 15 display unit, 16 operation unit, 17 wireless communication unit, 17a antenna.

Claims

1. a surrounding facility search unit that searches for facilities related to the genre information designated by a user and that are located within a predetermined range from a current position of the vehicle; a surrounding facility candidate display control unit that displays facility candidates related to one or more hits in the genre information; a route search unit that searches for a route to each of the candidate facilities related to the one or more genre information, when a railroad crossing is included in the route to the candidate facility, the route search unit refers to a predicted time when the vehicle will pass through the railroad crossing and timetable data of stations before and after the railroad crossing to determine a risk that the railroad crossing will be closed when the vehicle passes through the railroad crossing; the peripheral facility candidate display control unit displays warning information for facility candidates on the route for which the risk of a railroad crossing being closed is other than "low," Route finding device.

2. the route search unit estimates a predicted time at which the railway vehicle will pass the railway crossing based on a relationship between the position of the railway crossing and the positions of the stations before and after the railway crossing, and railway vehicle arrival and departure times included in timetable information of the stations before and after the railway crossing, and determines a risk that the railway crossing will be closed when the vehicle passes through the railway crossing based on the predicted time at which the railway vehicle will pass through the railway crossing and the predicted time at which the vehicle will pass through the railway crossing; The route search device according to claim 1 .

3. When the route search unit determines, as a result of referring to the timetable data, that the number of railroad vehicles passing through the railroad crossing is equal to or greater than a predetermined number during the time period, the risk that the railroad crossing is closed is “high”; the peripheral facility candidate display control unit displays warning information indicating a "high" risk for a facility candidate having a "high" risk of a railroad crossing being closed on the route; The route search device according to claim 1 .

4. When the route search unit determines, as a result of referring to the timetable data, that the number of railroad vehicles passing through the railroad crossing is equal to or greater than a predetermined number during the time period, the risk that the railroad crossing is closed is “high”; the peripheral facility candidate display control unit excludes facility candidates having a "high" risk of a railroad crossing being closed on the route from a selection screen of facility candidates related to the genre information; The route search device according to claim 1 .

5. A process of searching for facilities related to the genre information designated by a user, the facilities being located within a predetermined range from a current position of the vehicle; A process of displaying candidates for facilities related to one or more hit genre information; a process of searching for a route to each of the candidate facilities related to the one or more genre information; When a railway crossing is included in the route to the candidate facility, the process of searching for the route includes: determining a risk that the railway crossing will be closed when the vehicle passes through the railway crossing by referring to a predicted time when the vehicle will pass through the railway crossing and timetable data of stations before and after the railway crossing; The process of displaying the facility candidates includes displaying warning information for facility candidates whose risk of a crossing being closed on the route is other than "low." A route finding program.

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