JP7177642B2 - Route display method - Google Patents

Description

The present invention relates to a route display method for guiding a running vehicle.

Recent advances in wireless mobile communication systems have made it possible to transmit and receive data to and from mobile objects (vehicles, etc.) that move over a wide area. On the other hand, advances in GPS (Global Positioning System) positioning technology have made it possible to instantly obtain position information of a moving mobile object with high accuracy. For this reason, various systems are used that combine these technologies to monitor the positions and driving conditions of a plurality of vehicles. When this vehicle is a taxi or a transportation vehicle, a vehicle allocation system is also used to realize an optimal vehicle allocation situation by grasping such a situation.

For example, in Patent Document 1, a target area is divided into a plurality of vehicle allocation areas, priority is set for vehicles (taxi) in each vehicle allocation area, and at the time of vehicle allocation, a specified vehicle allocation destination (location ) and the positional relationship of the vehicle, as well as the priority, to select a vehicle. As a result, the most suitable vehicle for the customer can be allocated according to the characteristics of the vehicle allocation area.

Further, Patent Literature 2 describes a system that recognizes the presence or absence of vacant vehicles in each area and dispatches vehicles that are recognized as vacant. At this time, if there are a plurality of customers requesting vehicle allocation at the same time, the vehicle is allocated according to customer information (waiting time, frequency of use, etc.).

Such a vehicle allocation instruction is issued by a management center (base station) wirelessly connected to a terminal (mobile station) mounted on a vehicle. At this time, the management center can recognize the dispatched vehicle and the travel route to the dispatch destination. For example, if there are a plurality of vehicles that are vacant and estimated to arrive at the destination in a short time, as shown in FIG. 7, the travel route and expected arrival time are displayed for each vehicle. Here, 001, 002, 003, and 004 are extracted as vacant vehicles around the station serving as the dispatch destination (customer pick-up destination) 100, and the shortest driving route to each dispatch destination 100 is displayed. there is Assuming that each vehicle is in a standard running state, the time required to travel the above-described route is shown on the right side of the figure as the expected arrival time of each vehicle. Here, the estimated arrival times are displayed in descending order, and this order can be used as the order of priority when selecting a vehicle.

In addition, as described above, it is possible to display not only the travel route to the delivery destination of an empty vehicle, but also the travel route from when the customer gets on the vehicle to when the customer arrives at the destination. As a result, it is possible to set a travel route with the shortest travel time and the lowest toll.

JP 2015-158830 A JP-A-2018-49408

In the example of FIG. 7, the vehicle 002, for example, is preferentially selected as the vehicle with the shortest expected arrival time. However, the estimated arrival time varies greatly depending on various factors such as actual road congestion, weather, and surrounding events. Moreover, in reality, the specifications of each vehicle to be selected are not the same, and the vehicle with the shortest mileage is not necessarily the most suitable one.

Further, for example, when the place where the vehicle is to be traveled is a tourist spot and the customer is a tourist, it is not always preferable that the travel route from getting on the vehicle to reaching the destination be the shortest. In this case, even if the travel distance is long, a travel route passing through popular tourist spots is preferable.

For this reason, if the travel route is set based only on the positional relationship between the vehicle's current position and the destination as described above, or if the vehicle to be dispatched is selected, an inappropriate travel route or vehicle may be set. was there. Therefore, a route display method that facilitates the selection of an appropriate travel route according to the purpose has been desired.

The present invention has been made in view of such circumstances, and an object thereof is to solve the above problems.

The present invention is a route display method for displaying a travel route on which a vehicle travels on a map. The included two-dimensional range on the map is divided into a plurality of first layer regions by first layer division, and each of the first layer regions is further divided into a plurality of second layer regions by second layer division. a first layer attention point, which is the attention point in the first layer area, is stored corresponding to each of the first layer areas; and a second layer attention point, which is the attention point in the second layer area. Noteworthy point information in which points are stored corresponding to each of the second layer areas is stored, and based on the noteworthy point information, when the travel route falls into one of the first layer areas, the first layer area is stored. The first layer attention point corresponding to the area is displayed on the map, and when the travel route enters one of the second layer areas, the second layer attention point corresponding to the second layer area is displayed. is displayed on the map, and a plurality of types of the first layer attention point or the second layer attention point in the attention point information are determined according to the user or the purpose of route display .
Further, in the attention point information, at least one of the preset first layer attention point and the second layer attention point can be set to be valid/invalid, and the attention point set as invalid can be set to be valid or invalid. The first layer attention point and the second layer attention point may be set not to be displayed on the map.
Further, in the attention point information, a numerical value is set corresponding to a plurality of the first layer attention points or a plurality of the second layer attention points, and the first attention point information is set based on the value of the numerical value. A priority order to be displayed among a plurality of hierarchical attention points or a plurality of said second hierarchy attention points is determined , and in said attention point information, a plurality of said first hierarchy attention points or said second hierarchy attention points are displayed. A plurality of types of numerical values may be set for a plurality of hierarchical attention points according to the user or the purpose of route display .
Further, each of the second layer regions is further divided into a plurality of third layer regions according to a third layer region, and in the attention point information, a third layer attention point which is the attention point in the third layer region is stored corresponding to each of the third layer areas, and when the travel route enters one of the third layer areas, the third layer attention point corresponding to the third layer area is stored on the map may be displayed in

According to the present invention, it is possible to obtain a route display method that makes it easy to select an appropriate travel route according to the purpose.

1 is a diagram showing the configuration of an entire vehicle allocation system in which a route display method according to an embodiment is executed; FIG. 2 is a block diagram showing the configuration of a management center used in the dispatch system; FIG. 1 is a block diagram showing the configuration of a mobile station in which a route display method according to an embodiment is executed; FIG. It is an example showing the specific contents of attention point information used in the route display method according to the embodiment. It is an example of display by the route display method according to the embodiment. It is an example showing a modification of attention point information used in the route display method according to the embodiment. It is an example of display by a conventional route display method.

Next, embodiments for carrying out the present invention will be specifically described with reference to the drawings. FIG. 1 shows the overall configuration of a vehicle allocation system in which a route display method according to an embodiment of the present invention is executed. Here, mobile stations 10A to 10E are used for each vehicle to be dispatched. Since the mobile stations 10A to 10E are mounted on each vehicle (taxi) in one-to-one correspondence, each mobile station includes the vehicle as a whole. The mobile stations 10A to 10E are provided with a positional information recognition unit (not shown) that receives GPS (Global Positioning System) signals emitted by the GPS satellite G and recognizes its own positional information (latitude and longitude). As each mobile station, a dedicated wireless communication terminal can be used, but a commonly used mobile terminal such as a smart phone or a tablet terminal can also be used.

Radio base stations 20A to 20Z are installed at a plurality of points on the ground, and each radio base station can communicate with mobile stations in its vicinity. Therefore, the radio base station with which the mobile station can communicate may change as the vehicle (mobile station) moves. In FIG. 1, mobile stations 10A to 10E are allowed to communicate with radio base station 20A within communicable range XA. Here, each mobile station transmits its own location information to the radio base station 20A. In addition, each mobile station is connected to a fare meter of each vehicle, and the fare meter recognizes the status and information of the vehicle through automatic control according to the operation status (waiting at a traffic light, traffic congestion, etc.) and operation by the crew. The state and information recognized in this way are also transmitted from the mobile station side to the radio base station 20A side. The vehicle states and information recognized here include, for example, (1) "actual vehicle" (state in which a customer is on board and heading to a destination), (2) empty vehicle (state in which no customer is on board), and (3) "Scheduled to be empty" (scheduled time when the vehicle is currently in the actual state and becomes empty after that), (4) "Payment" (state where the vehicle is stopped and payment processing is being performed), (5) "Rest" ( state that the car is vacant and the crew is taking a rest).

The radio base stations 20A-20Z are connected to the management center 30 via the network NW. Therefore, the management center 30 can recognize the positions of the vehicles (mobile stations 10A to 10E) under its management through any one of the radio base stations 20A to 20Z. Moreover, not only the position information but also the state and information of each vehicle as described above can be recognized. The position, state, and information of each vehicle are periodically recognized by the management center 30 at short intervals.

On the other hand, the customer connects to the vehicle allocation center 40 connected to the management center 30 via the network NW and transmits a request for vehicle allocation to the management center 30 . The vehicle allocation center 30 is actually composed of vehicle allocation terminals 41A to 41Y, which are a plurality of terminals connected to the network NW, and an operator who operates each vehicle allocation terminal inputs customer requests. The information entered here (vehicle allocation information) includes customer specific information (name, number of people, etc.), vehicle allocation destination information (where the customer wishes to board), destination information (place name, facility name, etc.), vehicle allocation request, etc. There are time, desired car type, etc.

When the management center 30 obtains the vehicle allocation information from the vehicle allocation center 40, the management center 30 provides the customer with information on the latest position, state, and vehicle of each vehicle (mobile station) obtained as described above. A vehicle to be dispatched is selected, and this dispatch information is transmitted to the mobile station of this vehicle. As a result, the driver of this vehicle can recognize that he or she has been selected, and the destination and customer to which the vehicle should be sent. Here, in order to select vehicles in this way, the management center 30 can select vehicles whose status is the above-mentioned (2) "empty vehicle". In addition to this, (3) those whose "vacancy schedule" time is near, and (4) those whose status is "payment" can also be selected. Furthermore, among the vehicles that meet the above requirements, the vehicle with the shortest arrival time to the dispatch destination can be given top priority. As described above, the management center 30 can also recognize the location information of the mobile station that has acquired the vehicle allocation information and is in the process of moving to the vehicle allocation destination. The management center 30 can also recognize, as the above-mentioned vehicle-related information, that the vehicle has started traveling to the destination with the customer on board. Depending on the number of customers, a plurality of vehicles may be selected at the same time. Vehicle allocation information (request for vehicle allocation from the customer side) can include desired vehicle characteristics (type, color, etc.), etc. In this case, these characteristics are also taken into consideration.

Note that the configuration itself shown in FIG. 1 is common to the system described in Patent Document 1, for example. For example, the customer accesses the homepage of the taxi company, sends information to the management center 30 using the application of the mobile terminal owned by the customer, or makes a telephone call to the automatic receptionist of the management center 30. The vehicle allocation information can also be input to the management center 30 without going through the vehicle allocation center 40 .

FIG. 2 is a block diagram showing the configuration of the management center 30 described above. The management center 30 comprises three servers (a map server 31, a vehicle allocation server 32, and a database server 33) provided for each function.

The map server 31 is a server that manages map information for all areas in which each vehicle travels. route search unit 311 for calculating total distance), required travel time, and the like.

The vehicle allocation server 32 is a server that uses the map server 31 and a database server 33 to be described later to allocate vehicles. The vehicle allocation server 32 has a candidate vehicle search unit 321 that searches (searches for) a vehicle suitable for vehicle allocation according to the above vehicle allocation information, and allocates a vehicle (mobile station) to the vehicle (mobile station) searched by the candidate vehicle search unit 321. and a dispatch instruction unit 322 that issues an instruction.

The candidate vehicle search unit 321 selects candidate vehicles to be allocated according to the vehicle allocation information and the position, state, and information of each vehicle (mobile station) recognized as described above. The vehicle allocation instruction unit 322 transmits the vehicle allocation information to the vehicle (mobile station) thus selected.

At this time, the database server 33 instructs the selected mobile station about the travel route from the current location of the vehicle to the dispatched destination and the travel route from the dispatched destination to the destination, and displays them on the mobile station side. The present invention is characterized by the display method of the travel route at this time. Data used for this purpose include various types of information (area information) within the area in which the vehicle travels, and the position, state, and information of each vehicle obtained from the mobile station side as described above. An area information management unit 331 is provided for the former storage and management, and a vehicle information management unit 332 is provided for the latter storage and management. As described above, the position, state, and information of the vehicle in the vehicle information management section 332 are updated to the latest in a short period of time.

The dispatch system of the present invention is particularly characterized by the method of displaying the travel route. FIG. 3 is a diagram showing the configuration of the mobile station 10 (10A to 10E) that displays the travel route in this way. The mobile station 10 stores a wireless communication unit 12 for exchanging information with the management center 30 as described above, a position recognition unit 13 for recognizing its own position, and various data related to its own operation. It comprises a storage unit 14, an operation unit 15 operated by the vehicle crew, a display unit 16 for displaying various information such as maps and travel routes, and a control unit 11 for controlling the entire mobile station 10 side.

Based on the map information obtained from the management center 30 side and the instructed travel route, the control unit 11 causes the display unit 16 to display the travel route on the map. At this time, not only is the travel route simply displayed on the map, but also points of interest within the displayed range are displayed together with the travel route based on the area information similarly obtained from the management center 30 side. Points of interest are facilities or characteristic places that influence the setting of the travel route, and are objects that can be displayed along with the travel route on the map. However, the number of attention points that can be displayed is limited so that the user can easily recognize their existence on the map.

Here, the points of interest are (X) those whose existence is effective to be recognized within a wide range where the vehicle travels, and (Y) which are localized compared to the former within the range where the vehicle travels. Those whose existence is useful to be aware of are classified into two types. Examples of the former include famous tourist spots, restaurants, emergency evacuation sites, and the like. For example, it is often desirable for tourists to recognize the existence of a famous tourist spot even when the distance from the current location is not close (when there is no vehicle in the vicinity). The same applies to restaurants and emergency evacuation sites.

On the other hand, examples of the latter include traffic jam areas (places where traffic jams occur frequently), attention areas (places where the accident rate is high), convenience stores, toilets, and the like. If it is easy to detour around these areas, it is sufficient to recognize the presence of the traffic congestion area and caution area only when the vehicle is in the vicinity of the area. Also, since there are many convenience stores and restrooms, it is sufficient to display only those that are very close to the vehicle. Conversely, if all of these objects are displayed over a wide range, the number of displayed objects will be too large, making it difficult for the user to recognize their existence on the map.

For this reason, in the management center 30, in response to the above (X) wide range in which it is effective to recognize the existence thereof, the first layer area division corresponding to this wide range is set. Then, the attention point (first hierarchy attention point) that becomes the above (X) is set in this area (first hierarchy area). In addition, a second layer area division is set in which this area is further subdivided. It is set, stored in the database server 33 and used as attention point information. FIG. 4 is a table showing specific examples of attention points set corresponding to respective regions and sub-regions as attention point information set in this way.

FIG. 5 is an example of the display of the display unit 16 and the vehicle allocation terminals 41A to 41Y of the vehicle allocation center 40 using the route display method used here. Within the displayed range, rectangular areas A (upper left), B (upper right), C (lower left), and D (lower right) are set as first layer areas. Further, for the area A, rectangular sub-areas A1 (upper left), A2 (upper right), A3 (lower left), and A4 (lower right) are set as the second layer area. Similarly, sub-areas B1 to B4, C1 to C4, and D1 to D4 are set for areas B, C, and D, respectively. Although each sub-region is divided by straight lines as shown in the drawing, regions A to D correspond to wide regions as described above, and as shown in the drawing, they overlap at adjacent portions. have a part. Further, in FIG. 5, the indicated travel route R is indicated by a thick solid line.

In FIG. 4, in areas A to D, there are three (1) sightseeing spots, (2) restaurants, and (3) emergency evacuation sites as points of interest (first layer of interest) that become (X) above. A common type is set, and as detailed information for each attention point, for example, (1) a specific name of a tourist spot (castle A) in the area A is stored. Also in the sub-region A1, (11) congestion area, (12) attention area, (13) convenience store (convenience store), (14) restroom as attention points (second layer attention points) corresponding to (Y) above. Four types are commonly set, and specific names and the like are stored as detailed information of each attention point. In FIG. 4, only the name (or none) is described as this detailed information, but in reality, its accurate position information (latitude, longitude) is also stored as attention point information. Therefore, each of these attention points can be displayed on the map of FIG. Further, in the table of FIG. 4, description of detailed information about the sub-areas A2 and A3, which are irrelevant in the following examples, is omitted.

Here, the user can select in advance what kind of attention point is to be displayed. This setting can be made by selecting "valid/invalid" in FIG. For example, (2) restaurants in area A in FIG.

In FIG. 5, travel route R passes through areas A, B, and C, but does not pass through area D. In FIG. Further, in the region A, the travel route R passes only through the sub-region A4 and does not pass through the sub-regions A1 to A3. Further, in the region B, the travel route R passes through the sub-regions B1 and B2, but does not pass through the sub-regions B3 and B4. Further, in the region C, the travel route R passes through the sub-regions C2 and C3, but does not pass through the sub-regions C1 and C4.

In this route display method, only points of interest in areas and sub-areas through which the travel route R passes are displayed together with the travel route. For this reason, first, in area A, (1) sightseeing spots that are actually within sub-area A1 are displayed as first layer attention points corresponding to area A. FIG. In the sub-area A4 through which the driving route R passes, if there is a corresponding second layer attention point, it will be displayed. Second layer attention points are not displayed.

On the other hand, in area B, there are (2) restaurants and (3) emergency evacuation sites as points of interest on the first layer, but since (2) restaurants are disabled, they are actually within sub-area B3. (3) Only the emergency evacuation site is displayed. Also, as the second layer attention points, (11) congestion area and (13) convenience store are displayed in the sub-region B1, and (12) attention area is displayed in the sub-region B2.

In the area C, there is no corresponding object as a corresponding first layer attention point. On the other hand, (12) caution area and (13) convenience store are displayed in the sub-region C2, and (11) congested area is displayed in the sub-region C3 as second layer attention points.

As described above, in the above-described route display method, attention points are selected and displayed for each area (first layer area) and narrower sub-areas (second layer areas). can only be selected and displayed. At this time, by performing the above-mentioned "effective/ineffective" setting according to the purpose of travel route setting, it is possible to further narrow down and display necessary points of interest. For example, if this travel route R is set for vehicle allocation and is for arriving at the destination in the shortest time, (11) congested area, (12) which affects the traveling time in FIG. All items other than the caution area may be disabled.

Therefore, according to the above-described route display method, it becomes easier to select an appropriate travel route according to the purpose. At this time, for example, in the techniques described in Patent Documents 1 and 2, the information in the divided area is used for dispatching the vehicle, but in the above-described route display method, the division of the area is displayed. It is used for selecting attention points.

Also, in the above example, the targets set as points of interest are set in advance as (1) to (3) and (11) to (14), and the points of interest to be displayed are set to "valid/invalid" from among them. However, for example, the “priority” in FIG. 4 may be set. In this case, only the point of interest with priority 1 is initially displayed, and for example, the point of interest with priority 2 is also displayed by the user's operation on the operation unit 15, and the point of interest with priority 3 is also displayed by further operation. can be At this time, for example, in the example of FIG. 4, in area A, (1) only castle A exists as a tourist spot, but (1) other facilities may also exist in area A as tourist spots. In such cases, each of these may be given a different priority. The same is true within the sub-region.

When setting "valid/invalid" and priority in this way, set attention points in advance in each area and sub-area, and use only these settings by changing them according to the user and the purpose of route display. can be done. FIG. 6 shows an example of three types of settings (three users) in such a case. Here, the user 1 is, for example, an operation manager of the management center 30, and in this case, safety management of vehicle operation is of the utmost importance. And its priority is raised. The user 2 is, for example, a driver of a vehicle, and in this case, (1) sightseeing spots and (12) attention points are valid and given high priority in consideration of operation when tourists are on board. The user 3 is, for example, a sightseeing tour planner. In this case, convenience for tourists is given top priority, and (1) sightseeing spots and (14) toilets are effective and have high priority.

In these cases, the targets themselves selected as attention points can be stored in advance in the database server 33 as common items together with the setting of the areas and sub-areas. After that, depending on the user and the purpose of the route display, "effective/ineffective" and priority can be appropriately changed and used.

In addition, in FIG. 4, the importance is set as a point along with the priority (integer after 1). For example, the degree of importance can be set so that, contrary to the priority, the larger the value, the more likely it is to be displayed. In this case, the importance can be used not only for displaying the travel route but also for selecting the travel route. For example, as shown in FIG. 5, the importance of points of interest displayed in the vicinity of a travel route R is totaled, a plurality of types of travel routes R are set, and the cumulative value of the importance is compared, and the cumulative value is the largest. The management center 30 can also issue an instruction to adopt a different travel route. Similar to the "valid/invalid" and priority in FIG. 6, the importance can be appropriately set according to the purpose of the user and route display or route setting. Also in this case, as the specific contents of the attention point, the preset contents can be used without changing. In this case, for example, a point of interest with a low degree of importance is not displayed if the distance from the travel route R is greater than a certain value, and a point of interest with a high degree of importance is displayed even if this distance is greater than a certain value. In this way, it is possible to perform display in more detailed cases than in the case of selection based on the above priority.

Further, as described above, it is effective to recognize the existence of the points of interest selected in each of the regions A to D within the wide range in which the vehicle travels (X). It is preferable to recognize even in adjacent regions. For this reason, in FIG. 5, the areas A to D are not simply divided areas, but are set so that adjacent portions overlap each other. As a result, omission of points of interest listed as data in the area is suppressed. On the other hand, attention points selected in the sub-areas A1 to A4, etc. (Y) are effective to be recognized locally within the range in which the vehicle travels, and there are many of them. For this reason, in order to suppress overlapping of points of interest between sub-regions, in FIG. 5, settings are made so that there is no overlapping portion between adjacent sub-regions.

Also, the contents of items (1) to (3) and (11) to (14) set as attention points (first layer attention points, second layer attention points) as described above can be set as appropriate. be. These settings in the first layer area and in the second layer area may be appropriately exchanged depending on the purpose or the like.

Also, in the above example, the first layer area (A to D) and the second layer area (A1 to A4, etc.) are set. Further, third layer areas are set by dividing the third layer, attention points (third layer attention points) are set in each third layer area, and display corresponding to these is performed in the same manner as described above. good. Conversely, a setting may be made such that a wide area including the first layer areas A to D becomes an area obtained by dividing a wider area. That is, in the above example, the number of layers of such division is two, but the number of layers of such division may be three or more.

In the above example, it is assumed that the above route display method is used in a taxi, the above attention point information is stored on the management center 30 side, and the display is performed on the mobile station side. However, the above configuration is effective when similarly displaying the travel route of a vehicle, and other vehicles such as buses, transportation vehicles, general passenger vehicles (including those used for sightseeing as in the above), and emergency vehicles. etc. is also effective. In such a case, without using the management center as described above, the above attention point information can be stored in these vehicle-side devices (car navigation system, etc.) and the same display method can be executed. In this case, it is particularly effective not only to simply display the travel route, but also to set the optimum route using the above-mentioned degree of importance.

The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is an example, and that various modifications can be made to the combination of each component, and that such modifications are within the scope of the present invention.

10, 10A to 10E mobile station 11 control unit 12 wireless communication unit 13 position recognition unit 14 storage unit 15 operation unit 16 display unit 20A to 20Z wireless base station 30 management center 31 map server 32 vehicle allocation server 33 database server 40 vehicle allocation center 41A to 41Y Vehicle allocation terminal 100 Vehicle allocation destination 311 Route search unit 321 Candidate vehicle search unit 322 Vehicle allocation instruction unit 331 Area information management unit 332 Vehicle information management unit XA Communication range G GPS satellite NW Network 001 to 004 Vehicle

Claims (4)

A route display method for displaying a route on which a vehicle travels on a map,
Selecting a plurality of attention points that are facilities or characteristic places that affect the setting of the travel route,
The two-dimensional range on the map including the travel route is divided into a plurality of first layer regions by first layer division, and each of the first layer regions is further divided into a plurality of second layer regions by second layer division. divided into areas,
A first layer attention point, which is the attention point in the first layer area, is stored corresponding to each of the first layer areas, and a second layer attention point, which is the attention point in the second layer area. and store attention point information stored corresponding to each of the second layer regions,
Based on the attention point information, when the travel route enters one of the first layer areas, the first layer attention point corresponding to the first layer area is displayed on the map, and the travel route is displayed. enters one of the second layer regions, displaying the second layer attention point corresponding to the second layer region on the map ;
A route display method, wherein a plurality of types of the first layer attention point or the second layer attention point in the attention point information are determined according to a user or a purpose of route display. In the attention point information,
At least one of the first layer attention point and the second layer attention point set in advance can be set to be valid/invalid. 2. The route display method according to claim 1, wherein points of interest on the second layer are not displayed on the map. In the attention point information,
setting a numerical value corresponding to a plurality of the first layer attention points or a plurality of the second layer attention points;
determining the order of priority to be displayed among a plurality of the first layer attention points or a plurality of the second layer attention points based on the value of the numerical value;
In the point-of-interest information, a plurality of types of numerical values set for a plurality of the first-layer attention points or a plurality of the second-layer attention points are determined according to the purpose of the user or the route display. 3. The route display method according to claim 1 or 2. Each of the second layer regions is further divided into a plurality of third layer regions according to a third layer region, and in the attention point information, the third layer attention points that are the attention points in the third layer region are Storing corresponding to each of the third layer areas,
3. When the travel route enters one of the third layer areas, the third layer attention point corresponding to the third layer area is displayed on the map. A route display method according to any one of the above.

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