JP2010122093A - Portable navigation device and its route searching method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable navigation device and its route searching method, capable of searching for a route to a destination by excluding a traveling prohibiting road of a double-riding motorcycle, when being mounted on the double-riding motorcycle. <P>SOLUTION: In the portable navigation device for searching for and guiding a route to the destination, it is determined whether the portable navigation device is used by being mounted on a motorcycle or on a vehicle. In the case where route search is requested, when detected that the portable navigation device is mounted on the motorcycle, and that double riding on the motorcycle is performed, route search is performed by excluding a double-riding traveling prohibiting road of the motorcycle determined in the Road Traffic Act. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable navigation device for searching and guiding a route to a destination and a route searching method thereof, and more particularly to a portable device mounted on a two-wheeled vehicle such as a two-wheeled vehicle (motorcycle) or a moped bicycle. The present invention relates to a navigation device and a route search method thereof.

The navigation device is mainly used for in-vehicle use, and is provided as a genuine equipment in the vehicle, or purchased and fixed to the vehicle for use. According to such an in-vehicle navigation device, a map image around the vehicle position is displayed on the monitor, a vehicle mark indicating the vehicle position is displayed on the map, and the map is scroll-displayed according to the movement of the vehicle. In addition, when the destination is set, the in-vehicle navigation device searches for a route from the current position to the destination, displays the route on the map image so that the route can be identified, and guides the driver to the destination.
However, in recent years, portable navigation devices (PND) have begun to spread. The portable navigation device can be carried, can be used by a pedestrian while walking or driving a bicycle, and can be used by being detachably attached to a motorcycle or a four-wheeled vehicle. Naturally, the portable navigation device also has a route guidance function to the destination. When a pedestrian carries it, the route to the destination is searched in consideration of a sidewalk, a train route, a bus route, and the like. In the case of a bicycle, the route to the destination is searched and guided via a roadway or a sidewalk, and in the case of a motorcycle or a four-wheeled vehicle, a route search equivalent to a vehicle navigation device can be performed. It has become.

  By the way, according to the Road Traffic Law, a single-seat motorcycle can travel on all roads on which a four-wheeled vehicle can travel including an automobile-only road. For this reason, when a conventional portable navigation device is attached to a motorcycle and performs a guidance route search to the destination, as in the case of a four-wheeled vehicle, all the roads that can be traveled including automobile-only roads are searched. As a road, a route to a destination is searched according to criteria such as toll road priority criteria, distance priority criteria, and time priority criteria. Such a guidance route search method has no problem when the motorcycle is driven by one person, but has a problem when the motorcycle is driven by two persons. This is because there are highway sections where the travel of two-seater motorcycles is prohibited by the Road Traffic Law.

FIG. 9 is an explanatory diagram showing a highway section (black road) where traveling of a two-seater motorcycle is prohibited, and a part of the central expressway R0 and all expressways connected to the central loopline R0 or The travel of two-seater motorcycles is prohibited on all sections. FIG. 10 is a list showing travel prohibition highways and travel prohibition sections of a two-seater motorcycle.
When a conventional portable navigation device is mounted on a motorcycle, regardless of whether it is single-seat or two-seater, all roads on which a four-wheel vehicle can travel are targeted for route search. In other words, the route search is also performed on an expressway section in which traveling of a two-seater motorcycle is prohibited. For this reason, a two-seater travel prohibited section may be included in the guidance route to the destination, and when traveling with a two-seater motorcycle, it will be guided to travel on a prohibited road, which is dangerous. Moreover, it is extremely inconvenient as a result of recommending traffic traffic violations.

As a conventional technology, a portable navigation device that changes settings (guidance volume, screen brightness, operation button size, map display, font size, etc.) depending on whether it is mounted on a motorcycle or a four-wheeled vehicle. There is. As another conventional technique, there is a navigation device that searches for a route to a destination by excluding a portion where a vehicle cannot pass safely (see Patent Document 1). For example, when there is a road with restrictions on vehicle height and width, this navigation device determines whether or not the own vehicle can pass through the road from the vehicle information of the own vehicle. Exclude route search.
However, when any of the conventional techniques travels with two people, the route is not searched so that the guidance route does not include the travel prohibited section of the two-seater motorcycle.
JP 2007-33331 A

As described above, the object of the present invention is to provide a portable navigation device capable of searching for a route to a destination by excluding the prohibited travel road of a two-seater motorcycle when mounted on a two-seater motorcycle. It is to provide a route search method.
Another object of the present invention is when a two-seater is detected during traveling, even if a route search to a destination is conducted without excluding the prohibited traveling road of a two-seater motorcycle. Is to provide a portable navigation device and a route search method for searching for a route excluding the travel-prohibited road by discarding the searched route.
Another object of the present invention is to provide a portable navigation device that allows a route search to a destination to be performed excluding the prohibited travel roads of these two-wheeled vehicles when mounted on a two-wheeled vehicle or a motorbike. Is to provide a method.

The present invention relates to a portable navigation device that is used by being mounted on a two-wheeled vehicle such as a two-wheeled vehicle (motorcycle) or a moped bicycle, and a route search method therefor.
-Portable navigation device The portable navigation device of the present invention includes a map data storage unit for storing map data, whether the portable navigation device is mounted on a two-wheeled vehicle or used on a four-wheeled vehicle. A mounted vehicle determination unit for determining, a route search requesting unit for setting a destination and requesting a route search, and when using a portable navigation device mounted on a two-wheeled vehicle for route search, excluding the two-wheeled vehicle prohibited road A route search unit for searching is provided.
The portable navigation device of the present invention further includes a two-seater detection unit that detects whether or not two people are riding on a motorcycle, and the route search unit includes the portable navigation device mounted on the motorcycle, and When it is detected that two people are riding in a motorcycle, the route search is excluded except for the two-seater prohibited road of motorcycles stipulated in the Road Traffic Law. Route search without excluding the two-seater prohibited road.
The portable navigation device of the present invention further includes a determination unit for determining whether a motorcycle driver is a licensed person who is prohibited from riding by two persons according to the Road Traffic Law. A driver who has a portable navigation device mounted on a motorcycle and whose motorcycle driver is prohibited from riding by two persons according to the Road Traffic Law. Otherwise, if it is detected that two people are riding in the motorcycle, the route search is performed excluding the two-seater prohibited road for motorcycles stipulated in the Road Traffic Law, The route search is performed without excluding the two-seater traveling prohibited road.
When the route search unit of the portable navigation device of the present invention detects that a two-seater rides on a motorcycle while traveling, and a route that does not exclude a two-seater travel prohibited road is being searched for, The searched route is discarded, and the route excluding the two-seater traveling prohibited road is searched again.

Route search method The route search method of the present invention is a step of determining whether to use the portable navigation device mounted on a two-wheeled vehicle or mounted on a four-wheeled vehicle. And when searching for a route, when the portable navigation device is mounted on a two-wheeled vehicle and used, a route search is performed excluding the two-wheeled vehicle prohibited road.
The route search method of the present invention further includes a step of detecting whether or not two people are riding in a motorcycle. In the route search step, a portable navigation device is attached to the motorcycle, and two people are in the motorcycle. If it is detected that you are riding, the route search is prohibited except for the two-seater motorcycle prohibited road specified by the Road Traffic Law. Route search without excluding roads.
The route search method of the present invention further includes a step of determining whether a motorcycle driver is a licensed person who is prohibited from riding by two persons according to the Road Traffic Law, and detecting whether the motorcycle is riding two people. In the step of searching for the route, the portable navigation device is mounted on the motorcycle, and the driver of the motorcycle is not a licensee who is prohibited from riding by the Road Traffic Law, If it is detected that two people are riding in the motorcycle, the route search is performed excluding the two-seater prohibited road of the motorcycle stipulated in the Road Traffic Law, otherwise the two people Route search without excluding riding-prohibited roads.
The route search method of the present invention further includes a step of detecting whether or not a motorcycle is being ridden by two persons while traveling, and if a two-seater is being ridden, if a route that does not exclude a two-seater prohibited road is being searched for. A step of discarding the searched route and re-searching for a route excluding the two-seater traveling prohibited road.

According to the present invention, it is determined whether the portable navigation device is mounted on a two-wheeled vehicle or used on a four-wheeled vehicle. When the portable navigation device is mounted on a two-wheeled vehicle and used, a route search is performed. At this time, it is possible to perform a route search by excluding the road where motorcycles are prohibited.
According to the present invention, it is detected whether two people are riding in a motorcycle, and when it is detected that two people are riding, the two-seater traveling prohibited road of the motorcycle stipulated in the Road Traffic Law is determined. The route can be searched by excluding it.
According to the present invention, even if the route search to the destination is performed without excluding the prohibited travel road of the two-seater motorcycle, if the two-seater is detected during the travel, the searched route is discarded. It is possible to re-search the route excluding the prohibited road of the two-seater motorcycle.

(A) Portable Navigation Device FIG. 1 is a configuration diagram of a portable navigation device, in which a portable navigation device PND is attached to a motorcycle cradle CRDL. The motorcycle may include a bicycle, but in this specification, it means a motorcycle.
A bus 11 of the navigation control unit 10 includes a CPU (processor) 12 that performs various navigation controls, a map data storage unit 13 that stores map data, an image drawing unit 14 that generates a map image around the vehicle position, and an intersection traveling direction. And voice guidance control unit 15 for guiding traffic congestion by voice, autonomous navigation sensor and position calculation unit 16 for calculating the vehicle position based on detection information from GPS, communication IF unit 17 for performing communication interface control, various settings, An operation unit 20 for inputting instructions is connected.
The CPU 12 performs later-described control according to various software stored in the ROM 12a, and performs route search processing by the route search software RSS, route guidance processing by the route guidance software RGS, and the like. The CPU 12 stores processing results such as a search route in the RAM 12b.

  The map data storage unit 13 stores map data. The map data includes road layer information for guide route creation and map matching processing, map layer information for generating map images, and character layer information for generating background characters. The road layer information includes node information constituting the road. , Link information, and intersection information. FIG. 2 is an explanatory diagram of a link record. Link ID, node numbers at both ends of the link, distance between links, link cost, road type flag, road attribute flag, highway code, route number, number of lanes, number of traffic lights, traffic It consists of data such as a restriction flag and a two-seater motorcycle prohibition flag RIF. The two-seater motorcycle prohibition flag RIF is used in the route search process of the present invention.

  The image drawing unit 14 reads out map data around the vehicle position from the map data storage unit 13 to generate a map image around the vehicle, and the map image and the guidance route generated by the route guidance software by the CPU 12 and the vehicle position mark. Are combined and displayed on the monitor 30. The voice guidance control unit 15 performs control for notifying the user of intersection guidance, traffic jam information, and accident occurrence information when the vehicle approaches the intersection, and the voice synthesis unit 40 is in response to an instruction from the voice guidance control unit 15. Digital audio data of a predetermined message is output, converted to an analog signal by the DAC 41, and output from the speaker 42.

  The communication IF unit 17 is connected to a two-seater detection unit 51, a vehicle / bike identification ID input unit 52, an autonomous navigation sensor gyro 53, and a vehicle speed pulse generator 54. The two-seater detection unit 51, vehicle / bike identification A signal from the ID input unit 52 is read by the CPU 12 via the communication IF unit 17. Further, the detection signal of the gyro 53 and the vehicle speed pulse generated by the vehicle speed pulse generator 54 are input to the position calculation unit 16 via the communication IF unit 17. The two-seater detection unit 51 detects that a person has got on the rear seat of the motorcycle, and the vehicle / bike identification ID input unit 52 determines whether the portable navigation device PND is attached to the vehicle or the motorcycle. A motorcycle identification ID for identification is input, a gyro 53 detects a horizontal rotation angle of the motorcycle, and a vehicle speed pulse generator 54 generates a pulse for every predetermined travel distance. When the portable navigation device PND is attached to the motorcycle gradel CRDL, the two-seater detection unit 51, the vehicle / bike identification ID input unit 52, the gyro 53, the vehicle speed pulse generator 54 and the communication IF unit 17 are connected by a connector. It has become so.

  The GPS receiver 18 performs predetermined processing on the reception signal input from the GPS antenna 19 and inputs the GPS reception data to the position calculation unit 16. The position calculation unit 16 generates GPS position data based on the GPS reception data, and adopts the GPS position as the current position when the current position of the motorcycle or the vehicle becomes unknown. Thereafter, the autonomous navigation sensor (gyro 53, vehicle speed pulse generation) The current position is estimated and output using the output signal of the device 54), and map matching processing is performed to correct the estimated current position on the road link.

FIG. 3 is a plan view showing an example of attaching the portable navigation device PND to the motorcycle, and the portable navigation device PND is fixed to a cradle (not shown) provided in front of the gasoline tank GTK. There is a driver's seat DST at the rear of the gasoline tank GTK, followed by a passenger seat BST, and a weight sensor is embedded in the passenger seat BST so that two-seater can be detected from the weight.
The image drawing unit 14 can also be configured to change the display format of the guidance image when mounted on a vehicle and when mounted on a motorcycle. For example, when mounted on a vehicle, a map image around the vehicle position, a guidance route, a vehicle position mark, and the like are combined and a normal map guidance image is displayed on the monitor 30, and when mounted on a motorcycle, the CPU 12 A simple guidance image as shown in FIG. 4 is displayed on the monitor 30 based on the guidance route information and the vehicle position data. The simple guide image displays the distance from the current position to the next intersection, the traveling direction at the intersection, the name of the intersection, the destination direction arrow, and the like, and does not display a map.

(B) Route Search Processing (a) First Route Search Processing FIG. 5 is a flowchart of the first route search processing of the present invention.
When the portable navigation device PND is attached to the cradle CRDL of a motorcycle or vehicle (step 101), the communication IF unit 17 of the navigation control unit 10 and the sensors 51 to 54 are connected. The CPU 12 refers to the identification ID input from the vehicle / bike identification ID input unit 52 and checks whether the portable navigation device PND is attached to the motorcycle or the vehicle (step 102).
When the portable navigation device PND is attached to the vehicle, the CPU 12 sets the volume of the guidance voice, the screen brightness, the size of the operation buttons, the map display, the font size, etc. for the vehicle (step 103), If it is attached to the motorcycle, it is set for the motorcycle (step 104).

After the portable navigation device PND is attached to the vehicle, if the user sets a destination using the operation unit 20 and requests a route search (step 105), the CPU 12 sets the destination in the same manner as a normal in-vehicle navigation device. A route search to the ground is performed (step 106), and thereafter, route guidance using the searched route is started (step 107).
On the other hand, when the portable navigation device PND is attached to the motorcycle, if the user requests a route search by setting the destination using the operation unit 20 (step 108), the CPU 12 detects the two-seater. Based on the detection signal from the unit 51, it is checked whether the vehicle is a two-seater (step 109). It should be noted that when setting the destination in step 108, it can be configured to input from the operation unit 20 whether or not it is a two-seater.
If it is not a two-seater, the CPU 12 searches for a route to the destination in the same manner as a normal vehicle-mounted navigation device (step 106), and thereafter starts route guidance using the searched route (step 107). . However, if it is a two-seater, a route search is performed by excluding the two-seater motorcycle traveling prohibition section from the route search target (step 110). Whether or not it is a two-seater motorcycle prohibition section can be determined by referring to the two-seater motorcycle prohibition flag RIF in the link code (see FIG. 2). When the route search is completed, route guidance using the route excluding the two-seater motorcycle prohibition section is started (step 111).

(B) Second route search processing By the way, two-seaters are prohibited for those who have obtained a motorcycle license under the age of 20 and those under three years after obtaining a motorcycle license under the Road Traffic Law. Therefore, if a person who is prohibited from two-seater is a driver, it is determined that the driver is not two-seater and the route search to the destination is performed in the same manner as a normal in-vehicle navigation device to guide the route. Can be controlled.
FIG. 6 is a flowchart of the second route search process of the present invention in such a case. 5 differs from the flow of FIG. 5 in that (1) Step 201 of inputting the driver's license acquisition date and date of birth, (2) Driver based on the input license acquisition date and date of birth. Is a step 202 for determining whether or not the two-seater defined in the Road Traffic Law is prohibited.

  In step 102, when the portable navigation device PND is attached to the motorcycle, the user inputs the date of birth and the date of license acquisition prior to requesting the route search (step 201). Next, if a destination is requested using the operation unit 20 and a route search is requested (step 108), the CPU 12 refers to the date of birth and the date of acquisition of the license input in step 201 so that the driver can It is determined whether the two-seater stipulated by the Road Traffic Law is a licensed person who is prohibited (step 202). If the two-seater is prohibited, the CPU 12 determines that the two-seater is not violated by the law, and the CPU 12 searches for the route to the destination in the same manner as a normal vehicle-mounted navigation device (step 106). Thereafter, route guidance using the searched route is started (step 107). Note that when two people are seated in violation of the law, the route searched in step 106 is discarded under the control of FIG. 7 described later.

On the other hand, if the two-seater is not prohibited, the CPU 12 checks whether it is a two-seater based on the detection signal from the two-seater detection unit 51 (step 109). Then, a route search to the destination is performed in the same manner as a normal vehicle-mounted navigation device (step 106), and thereafter, route guidance using the searched route is started (step 107). When a route search is performed in a state where two passengers are not riding and the vehicle travels with two people, the route searched in step 106 is discarded under the control of FIG. 7 described later.

If it is a two-seater in step 109, the route search is performed by excluding the two-seater motorcycle prohibition section from the route search target (step 110). When the route search is completed, route guidance using the route excluding the two-seater motorcycle prohibition section is started (step 111).

(C) Two-seater route re-search process A portable navigation device PND is attached to a motorcycle to search for a route as a single-seater and actually travels with two people. In such a case, there is a risk of traveling in a two-seater motorcycle prohibition section with two passengers. In such a case, it is desirable that the route searched as a single-seater is discarded, and the route is re-searched for a route excluding the two-seater motorcycle prohibition section and guided. FIG. 7 is a processing flow for performing such control.
The CPU 12 checks whether traveling has started (step 301), and if traveling, it checks whether the portable navigation device PND is attached to the motorcycle or the vehicle (step 302). If it is attached to the vehicle, it is checked whether the route has been searched (step 303), and if it has been searched, route guidance is performed according to the searched route (step 304).

On the other hand, if the portable navigation device PND is attached to the motorcycle in step 302, the CPU 12 checks whether the vehicle is a two-seater based on the detection signal from the two-seater detection unit 51 (step 305). . If it is not a two-seater seat, the processing after step 303 is performed, and route guidance is performed according to the searched route (steps 303 and 304).
However, if it is a two-seater, it is checked whether a route search has been completed for a single rider (step 306). If a route search has been completed for a single rider, the searched route is discarded (step 307). The route that excludes the motorcycle prohibited section is re-searched (step 308), and the route guidance to the destination is performed according to the re-searched route (the route that excludes the two-seater motorcycle prohibited section) (step 309). .
In step 306, if the route search has not been completed for single rider, it is checked whether the two-seater route has been searched (step 310). If the route has been searched, route guidance to the destination is performed according to the route. (Step 309).

(C) Modifications The above is the case of route guidance for two-seater motorcycles, but there are roads where two-wheeled vehicles and moped vehicles are prohibited by the Road Traffic Law depending on the road. The present invention can also be applied to such a case. In addition, the two-seater detection part 51 of FIG. 1 is unnecessary as a system configuration. FIG. 8 is a processing flow of a modification of the present invention.
When the destination is set (step 401), the CPU 12 checks whether the portable navigation device PND is attached to the two-wheeled vehicle or the four-wheeled vehicle (step 402). If it is attached to the four-wheeled vehicle, the CPU 12 conducts route search in the same manner as a normal on-vehicle navigation device to provide route guidance (step 403). On the other hand, if the portable navigation device PND is attached to the two-wheeled vehicle, the CPU 12 performs route search by excluding the two-wheeled vehicle prohibited road from the search target and provides route guidance (step 404). It should be noted that a flag indicating whether or not the road is a motorcycle prohibited road is included in the link code, and the route search is performed by excluding the link of flag = 1 from the search target.

It is a block diagram of a portable navigation apparatus. It is explanatory drawing of a link record. It is a top view which shows the example of attachment of the portable navigation apparatus PND to a motorcycle. It is an example of the simple guidance image by an arrow. It is a flowchart of the 1st route search process of this invention. It is a flowchart of the 2nd route search process of this invention. It is a re-search process flow of a two-seater route. It is a processing flow of the modification of this invention. It is explanatory drawing which shows the highway area (black road) where driving | running | working of a two-seater motorcycle is prohibited. It is a list | wrist which shows the driving prohibition highway and area of a two-seater motorcycle.

Explanation of symbols

PND portable navigation device
CRDL grader
RSS route search software
RGS route guidance software 10 Navigation control unit 12 CPU (processor) for various navigation controls
13 Map data storage unit 14 Image drawing unit 15 Voice guidance control unit 16 Position calculation unit 17 Communication IF unit 18 GPS receiver 20 Operation unit 30 Monitor 51 Two-seater detection unit 52 Vehicle / bike identification ID input unit 53 Gyro 54 Vehicle speed pulse Generator

Claims (14)

In a portable navigation device that searches and guides a route to a destination,
A map data storage unit for storing map data;
A mounted vehicle determination unit for determining whether to use the portable navigation device mounted on a two-wheeled vehicle or a four-wheeled vehicle;
A route search request unit that requests a route search by setting a destination,
When searching for a route, when the portable navigation device is mounted on a motorcycle and used, a route search unit that searches for a route by excluding a road where motorcycles are prohibited from traveling,
A portable navigation device comprising: The portable navigation device according to claim 1, wherein
The prohibited road of the two-wheeled vehicle is a prohibited road for two-wheeled vehicles and moped bicycles stipulated in the Road Traffic Law, and the map data includes the prohibited road information of the two-wheeled vehicle.
A portable navigation device characterized by that. The portable navigation device according to claim 1, further comprising:
It has a two-seater detection unit that detects whether two people are riding a motorcycle,
The route search unit, when it is detected that the portable navigation device is mounted on the motorcycle and the two-seater rides on the motorcycle, the two-seater traveling of the motorcycle defined by the Road Traffic Law When searching for routes excluding prohibited roads and not riding two people, search for routes without excluding the two-seater traveling prohibited road,
A portable navigation device characterized by that. The portable navigation device according to claim 1, further comprising:
A determination unit that determines whether a motorcycle driver is a licensed person who is prohibited from riding by two persons under the Road Traffic Law;
It has a two-seater detection unit that detects whether two people are riding a motorcycle,
The route search unit includes a portable navigation device mounted on a motorcycle, and the driver of the motorcycle is not a licensed person who is prohibited from riding by the Road Traffic Law, and the motorcycle is If it is detected, the route search is performed by excluding the two-seater prohibited road for motorcycles stipulated in the Road Traffic Law. Otherwise, the two-seater prohibited road is not excluded. To search for a route,
A portable navigation device characterized by that. The portable navigation device according to claim 3 or 4,
2. The portable navigation device according to claim 1, wherein the map data includes two-seater travel prohibited road information of a motorcycle. The portable navigation device according to claim 4, wherein
Furthermore, it has a means to input the driver's license acquisition date and date of birth,
The route search unit determines whether the driver is a licensed person who is prohibited from two-seaters as defined by the Road Traffic Law based on the date and date of birth of the license obtained.
The portable navigation device according to claim 4. When the route search unit detects that a two-seater rides on a motorcycle while traveling and is searching for a route that does not exclude a two-seater travel prohibited road, the route search unit discards the searched route, Re-search for routes excluding roads where people are prohibited from traveling,
The portable navigation device according to claim 3 or 4, characterized by the above. In a route search method that can be placed on a portable navigation device that searches and guides a route to a destination,
Determining whether to use the portable navigation device on a two-wheeled vehicle or on a four-wheeled vehicle;
Setting a destination and requesting a route search;
When using a portable navigation device mounted on a two-wheeled vehicle when searching for a route, a step of searching for a route excluding a road where motorcycles are prohibited from traveling,
A route search method characterized by comprising: The route search method according to claim 8, wherein
The two-wheeled vehicle prohibited road is a road prohibited for two-wheeled cars and moped bicycles stipulated in the Road Traffic Law, and includes the prohibited road information of the two-wheeled vehicle in map data.
A route search method characterized by that. The route search method according to claim 8, further comprising:
Detecting whether two people are riding in a motorcycle,
In the route search step, when it is detected that the portable navigation device is mounted on the motorcycle and the two-seater rides on the motorcycle, the two-seater traveling of the motorcycle stipulated by the Road Traffic Law When searching for routes excluding prohibited roads and not riding two people, search for routes without excluding the two-seater traveling prohibited road,
A route search method characterized by that. The route search method according to claim 8, further comprising:
Determining whether the motorcycle driver is a licensed person who is prohibited from riding two persons under the Road Traffic Act;
Detecting whether two people are riding a motorcycle,
And in the step of searching for the route, the portable navigation device is mounted on the motorcycle, and the driver of the motorcycle is not a licensed person who is prohibited from riding by the Road Traffic Law, and automatically If it is detected that two people are riding in a two-wheeled vehicle, the route search is performed excluding the two-seater travel prohibition road of the motorcycle stipulated in the Road Traffic Law, otherwise the two-seater travel prohibition road Route search without excluding
A route search method characterized by that. The route search method according to claim 10 or 11,
2. The route search method according to claim 1, wherein the map data includes two-person traveling prohibited road information of a motorcycle. The route search method according to claim 11,
A step of inputting the driver's license acquisition date and date of birth;
The route search step determines whether the driver is a licensed person who is prohibited from two-seaters as defined by the Road Traffic Law based on the date and date of birth of the obtained license.
A route search method characterized by that. The route search method according to claim 10 or 11,
Detecting whether a motorcycle is being ridden by two people while traveling;
In the case of two-seater riding, if a route that does not exclude the two-seater travel prohibited road is searched, the step of discarding the searched route and re-searching the route excluding the two-seater travel prohibited road;
A route search method characterized by comprising:

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