JP2005326364A - Navigation device, navigation method, and recording medium for recording route guide program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device, a navigation method, and a recording medium for recording a route guide program enabling smooth traveling by avoiding a traffic obstruction even when the destination is not set. <P>SOLUTION: This navigation device 1 is equipped with a road traffic information receiving means 3 for receiving road traffic information including traffic obstruction information, a position calculation means 4 for acquiring the present position of a vehicle, a map data storage means 4 for acquiring map information, a route search means 6 for predicting a virtual destination based on the map information and the present position when the destination is not set and guiding a route avoiding the traffic obstruction when the traffic obstruction occurs on the route to the predicted virtual destination, and an output means 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device, a navigation method, and a recording medium on which a route guidance program is recorded, for example, for route guidance that avoids traffic jams and traffic restriction points when a destination is not set.

  2. Description of the Related Art Conventionally, there is a navigation system that provides a route that avoids a traffic jam in consideration of traffic obstacles such as traffic jam information and traffic regulations when searching for a route by setting a destination. In addition, there is a navigation system that, when new traffic obstacle information is received during route guidance, can search for a route that avoids the traffic obstacle and guide it.

  By the way, in such a navigation system, since a destination must be set in advance, there is a problem that a route that avoids a traffic obstacle can be searched only during route guidance.

  As a navigation system that solves such problems, traffic information such as traffic congestion obtained by VICS optical beacons, radio beacons, FM multiplex broadcasting, etc. is received, and within a predetermined area centered on the road in the traveling direction of the host vehicle. The point information search means for searching whether or not the traffic information is located in the area and the point specified by the traffic information searched by the point information search means are within a predetermined area centered on the traveling direction of the own vehicle. When it is located, there is one provided with point name means for notifying the name of the point specified by the traffic information and the traffic information corresponding to the point by the notifying means (for example, see Patent Document 1).

  In addition, as other navigation devices, travel route data consisting of a departure point, a destination, and a route set in the past is stored in a memory, and even when no destination is set, the travel route data stored in the memory The degree of coincidence with the current traveling road and the traveling state such as the traveling direction is calculated, and the route is automatically set based on the traveling route data having the highest degree of coincidence and the received traffic jam information (for example, patents) Reference 2).

Further, as a method other than the above, there is a route display device that registers a loopway that can avoid a traffic jam in advance in a map database, and always notifies the passenger by superimposing the loopway on a map on the screen.
JP 2003-294461 A (page 2-3, FIG. 1) JP 2000-266562 A (page 2-3, FIG. 1)

  However, in the navigation system shown in Patent Document 1, it is possible to recognize a traffic jam location or a traffic regulation location, but it is not designed to guide a route that avoids the traffic regulation location, so in an unfamiliar area or the like There is a problem that their avoidance route is unknown.

  Further, in the navigation device shown in Patent Document 2, the route is automatically set based on the travel route data composed of the departure place, destination and route set in the past stored in the memory. There is a problem in that it is impossible to guide a route that avoids a traffic state on a road in which data is not stored in a memory.

  Furthermore, in the route display device having the function of superimposing and displaying the escape route on the map screen, it is necessary to register in advance the escape route that avoids traffic jams, regardless of the direction in which the vehicle heads and the presence or absence of traffic jams, Since it is always displayed on the screen, there is a problem that the screen display becomes complicated.

  The present invention has been made in order to solve the conventional problems, and can provide a navigation device, a navigation method, and route guidance capable of smoothly traveling while avoiding traffic obstacles even when the destination is not set. An object is to provide a recording medium on which a program is recorded.

  The navigation device of the present invention sets a route to a virtual destination set by the traveling locus of the vehicle when the destination is not set, and when the traffic failure occurs on the route, It is comprised from what was provided with the guide means which guides the route | route which avoided.

  With this configuration, even when the destination is not set, it is possible to smoothly travel while avoiding traffic obstacles such as traffic jams and traffic restrictions.

  Further, the navigation device of the present invention includes a road traffic information receiving means for receiving road traffic information including at least traffic obstacle information, a position acquisition means for acquiring the current position of the vehicle, and a map information acquisition means for acquiring map information. And a prediction means for predicting a virtual destination based on the map information and the current position when the destination is not set, and the traffic obstacle on the route to the virtual destination predicted by the prediction means. And a guide means for guiding a route avoiding the traffic obstacle when it occurs.

  With this configuration, even when the destination is not set, the virtual destination set by the traveling locus of the host vehicle is predicted, and traffic congestion, traffic regulation, etc. on the route to the predicted virtual destination When a traffic obstacle occurs, smooth travel can be performed while avoiding the traffic obstacle.

  In addition, the navigation device of the present invention is configured such that the guide means notifies that the route guidance is performed prior to performing route guidance avoiding the traffic obstacle.

  With this configuration, the occupant can recognize in advance that the provided route is a route for avoiding a traffic obstacle, and can travel the route with peace of mind.

  In the navigation device of the present invention, the prediction unit includes a current direction calculation unit that calculates a vehicle direction at the current position as a travel direction, and sets the virtual destination based on the travel direction. Consists of what to do.

  With this configuration, since the virtual destination is set based on the traveling direction of the vehicle at the current position, it is possible to avoid a traffic obstacle occurring in the current traveling direction.

  In the navigation device of the present invention, the prediction means includes a travel route storage means for storing a travel route up to the current position, and a route orientation calculation means for calculating the orientation obtained from the travel route as a travel orientation. And setting the virtual destination based on the travel direction.

  With this configuration, since the virtual destination is set based on the travel direction calculated from the travel route to the current position, the virtual destination can be set with high accuracy and the virtual destination can be set. An avoidance route close to can be set.

  In addition, the navigation device of the present invention includes a specifying unit that specifies setting and non-setting of the virtual destination, and the guide unit includes the virtual destination when the setting of the virtual destination is specified by the specifying unit. The destination is set to perform the route guidance.

  With this configuration, when the destination is not set, it is possible for the occupant to select whether or not to perform a route search that avoids traffic obstacles, and thus the usability of the navigation device can be improved.

  The navigation method of the present invention includes a step of receiving road traffic information including at least traffic obstacle information, a step of acquiring the current position of the vehicle, a step of acquiring map information, and a non-setting of the destination, Predicting a virtual destination set by the travel locus of the vehicle based on the current position and map information, and when the traffic obstacle occurs on the predicted route to the virtual destination, And guiding a route avoiding the traffic obstacle.

  According to this method, even when the destination is not set, it is possible to smoothly travel while avoiding traffic troubles such as traffic congestion and traffic restrictions.

  Further, the recording medium on which the route guidance program executable by the computer is recorded is a processing medium in which the route guidance program receives road traffic information including at least traffic obstacle information when the destination is not set, and the current vehicle A process of acquiring a position, a process of acquiring map information, a process of predicting a virtual destination set by a travel locus of the vehicle based on the current position and map information, and the predicted virtual destination And processing for guiding a route avoiding the traffic obstacle when the traffic obstacle occurs on the route to the ground.

  With this configuration, it is possible to obtain a route guidance program that can perform smooth travel while avoiding traffic obstacles such as traffic congestion and traffic regulation even when the destination is not set.

   As described above, the present invention provides a navigation device, a navigation method, and a recording medium on which a route guidance program is recorded that can smoothly travel even when a destination is not set. Can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
1 to 4 are diagrams showing a first embodiment of a recording medium on which a navigation device, a navigation method, and a route guidance program according to the present invention are recorded.

  First, the configuration will be described. In FIG. 1, the navigation apparatus 1 includes an input unit 2, a road traffic information receiving unit 3, a position calculating unit 4, a map data storage unit 5, a route searching unit 6, an output unit 7, and a recording medium reading unit 8.

  The input means (designating means) 2 includes a microphone that performs voice input and a voice recognition device that performs voice recognition, a touch panel, a remote control operation, and other input means that perform button input. The user selects whether or not to search for the recommended travel route by inputting the destination, and inputs the destination when searching for the recommended travel route.

  The road traffic information receiving means 3 is composed of a VICS receiver and the like, and receives road traffic information related to traffic obstacles such as traffic jams and traffic regulations.

  The position calculation means (position acquisition means) 4 detects a radio wave transmitted from a plurality of satellites, thereby detecting a position of the vehicle (longitude, latitude) and an angular velocity for detecting the rotation angular velocity of the own vehicle. An autonomous navigation sensor including a sensor, a distance sensor for detecting a travel distance, an acceleration sensor for detecting the acceleration of the own vehicle, a speed sensor for detecting the speed of the own vehicle, and the like stored in the map data storage means 5 The position of the vehicle is calculated by matching the vehicle position data with the map information.

  The map data storage means (map information acquisition means) 5 is a recording medium for storing map information such as a road map, and is composed of, for example, a CD, a CD-ROM, a DVD, or a hard disk. The road map may be recorded in advance in the map data storage means 5 or downloaded from a server on the Internet to the map data storage means 5.

  The route search means 6 is composed of a computer equipped with a CPU, ROM, RAM, etc., and the map information stored in the map data storage means 5 when the destination non-setting operation is performed by the input means 2. And a virtual destination is predicted based on the current position of the host vehicle calculated by the position calculation means 4, and when a traffic fault occurs on the route to the predicted virtual destination, The route that is avoided is guided.

  In addition, when the destination is set by the input unit 2, the route search unit 6 calculates a recommended travel route to the set destination.

  The output means 7 is provided with a liquid crystal display or the like for displaying characters, graphics, etc., and displays the route to the virtual destination predicted by the route search means 6 together with road information, or the predicted virtual destination. When a traffic obstacle occurs on the route up to, a route avoiding the traffic obstacle is displayed. In the present embodiment, the route search means 6 constitutes recommended route setting means and prediction means, and the route search means 6 and output means 7 constitute guidance means.

  The recording medium reading means 8 is composed of a CD drive, a DVD drive, an MD drive, a hard disk drive, etc. for reading recorded contents from a recording medium such as a CD, DVD, MD, hard disk, etc. A route guidance program executable by the means 6 is recorded.

  Specifically, the route guidance program includes a process of receiving road traffic information including traffic fault information, a process of acquiring the current position of the vehicle, and a process of acquiring map information when the destination is not set. , A process of predicting a virtual destination set by the current position (running trajectory) of the vehicle based on the current position and map information, and when a traffic fault occurs on the route to the predicted virtual destination And a process for guiding a route that avoids a traffic obstacle.

  Next, a navigation method will be described with reference to FIGS.

  FIG. 2 is a flowchart of route guidance processing. In FIG. 2, first, after the current position of the vehicle is acquired by the position calculation means 4 (step S1), the input means 2 is set in advance to perform route guidance for avoiding traffic jams when the destination is not set. It is determined whether or not (step S2).

  If it is determined in step S2 that route guidance is not to be performed when the destination is not set, the current processing is terminated. If it is determined that route guidance is to be performed when the destination is not set, road traffic information It is determined whether or not traffic obstacle information has been acquired by the receiving means 3 (step S3).

  When the traffic obstacle information is acquired in step S3, a virtual destination is predicted based on the map information stored in the map data storage means 5 and the current position of the vehicle calculated by the position calculation means 4. When a traffic failure occurs on the route to the predicted virtual destination, a route that avoids the traffic failure is searched (step S4).

  Next, prior to performing route guidance avoiding traffic obstacles, the output means 7 informs that route guidance is to be performed (step S5), and then displays the route avoiding traffic obstacles together with the map information. (Step S6).

  FIG. 3 shows an example of a route search method that avoids traffic jams when the road traffic information including traffic obstacles is traffic jam information. In FIG. 3, first, when the road traffic information receiving means 3 receives the traffic jam occurrence points A1 and A2 as traffic jam information, the route search means 6 searches for a route based on the flowchart of FIG.

  FIG. 4 is a flowchart showing route setting processing that avoids traffic jams. 3 and 4, first, when approaching the traffic jam occurrence point A1, a point P2 that passes through the traffic jam occurrence point A1 on the traveling road at the current position P1 of the vehicle is set as a route search target point (virtual destination). After (step S11), a route to the set target point is searched (step S12).

  In FIG. 3, if it is assumed that routes L1, L2, and L3 have been searched as route candidates (step S13), cost calculation is performed for each route (step S14).

  The weighting of the cost is determined in consideration of the degree of traffic jam, the length of the route to the point that passes through the traffic jam, the location at the time of turning at the intersection, the direction, the road width and the number of lanes. The cost weighting information is determined in advance as parameters of the map data and the route search means 6.

  When the cost calculation is performed in step S14, if the route with the lowest cost is calculated (step S15), a route that avoids the traffic congestion occurrence point A1 is set (for example, L2). (Step S16), the route L2 is displayed by the output means 7 together with the road information. As shown in FIG. 3, the route indicated by the broken line L2 is displayed on the output means 7 together with the road information.

  As described above, the navigation device 1 according to the present embodiment acquires road traffic information receiving means 3 for receiving road traffic information including traffic fault information, position calculating means 4 for acquiring the current position of the vehicle, and acquiring map information. When the destination is not set, the map data storage means 5 predicts a virtual destination based on the map information and the current position, and the traffic obstacle occurs on the route to the predicted virtual destination. In some cases, the route search means 6 and the output means 7 for guiding a route that avoids a traffic obstacle are provided, so even when the destination is not set, the route from the current position of the host vehicle to the virtual destination When a traffic obstacle such as traffic jam or traffic regulation occurs, smooth travel can be performed while avoiding the traffic obstacle.

Further, since a memory for storing destinations and routes set in the past is not necessary, it is possible to avoid traffic jams regardless of the road type of the target road and the presence or absence of traveling experience.
(Second Embodiment)
FIGS. 5 to 8 are diagrams showing a second embodiment of the recording apparatus in which the navigation device, the navigation method, and the route guidance program according to the present invention are recorded. The configuration similar to that of the first embodiment is shown in FIGS. The same numbers are assigned and explanations are omitted.

  In FIG. 5, the navigation device 10 includes a current direction calculation unit 11 including a computer having a CPU, a ROM, a RAM, and the like. The current direction calculation unit 11 calculates the vehicle direction at the current position as a travel direction. It is supposed to be.

  Further, the route search means 6 predicts a virtual destination based on the traveling direction calculated by the current direction calculation means 11, and when a traffic fault occurs on the route to the predicted virtual destination. It is designed to guide routes that avoid traffic obstacles. In the present embodiment, the current direction calculation means 11 also constitutes a prediction means.

  Next, a navigation method will be described with reference to FIGS.

  FIG. 6 is a flowchart of route guidance processing. In FIG. 6, first, after the current position of the host vehicle is acquired by the position calculation means 4 (step S21), the input means 2 is set in advance to perform route guidance for avoiding traffic jams when the destination is not set. It is determined whether or not (step S22).

  If it is determined in step S22 that route guidance is not performed when the destination is not set, the current processing is terminated. If it is determined that route guidance is performed when the destination is not set, road traffic information It is determined whether or not traffic obstacle information has been acquired by the receiving means 3 (step S23).

  When the traffic obstacle information is acquired in step S23, the travel direction at the current position of the vehicle is calculated by the current direction calculation means 11 (step S24). Next, a virtual destination is predicted based on the map information stored in the map data storage unit 5 and the travel direction at the current position calculated by the current direction calculation unit 11, and the predicted virtual destination is reached. When a traffic obstacle occurs on the route, a route that avoids the traffic obstacle is searched (step S25).

  Next, prior to performing route guidance avoiding traffic obstacles, the output means 7 informs that route guidance is to be performed (step S26), and then displays the route avoiding traffic obstacles together with the map information. Is performed (step S27).

  FIG. 7 shows an example of a route search method in which the vehicle direction at the current position is set as the traveling direction and the road traffic information including the traffic obstacle is traffic jam information, avoiding the traffic jam. First, as shown in FIG. 7A, the road traffic information receiving means 3 receives traffic jam occurrence points A3 and A4 as traffic jam information. Next, when approaching the traffic jam occurrence point A3, the travel direction D1 at the current position P3 of the host vehicle is calculated by the current direction calculation unit 11, and the route search unit 6 searches for a route based on the flowchart of FIG.

  FIG. 8 is a flowchart of route setting processing that avoids traffic jams. 7 and 8, first, the azimuths D2 and D3 from the current position P3 to the points P4 and P5 passing through the traffic congestion occurrence points A3 and A4 are obtained, and the azimuths D2 and D3 are compared with the traveling azimuth D1 of the own vehicle ( Step S31).

  In step S31, the point P4 of the azimuth D2 having the smallest azimuth difference is set as a route search target point (virtual destination) (step S32), and a route to the set target point is searched (step S33).

  In FIG. 7B, assuming that routes L4, L5, and L6 are searched as route candidates (step S34), cost calculation is performed for each route (step S35). Cost weighting is the same as in the first embodiment.

  When the cost calculation is performed in step S35, if the route with the lowest cost is calculated (step S36), a route that avoids the traffic congestion occurrence point A3 is set (for example, L5). (Step S37), the route L5 is displayed by the output means 7 together with the road information. As shown in FIG. 7B, the route indicated by the broken line L5 is displayed on the output means 7 together with the road information.

As described above, the navigation apparatus 10 according to the present embodiment includes the current direction calculation unit 11 that calculates the vehicle direction at the current position as the travel direction, and sets the virtual destination from the travel direction. Traffic obstacles occurring in the direction of travel can be avoided. Other effects are the same as those of the first embodiment.
(Third embodiment)
FIGS. 8 to 11 are views showing a third embodiment of a recording medium on which a navigation device, a navigation method, and a route guidance program according to the present invention are recorded. The configuration similar to that of the first embodiment is shown in FIGS. The same numbers are assigned and explanations are omitted.

  In FIG. 9, the navigation device 20 includes a travel route storage unit 21 that stores a travel route up to the current position calculated by the position calculation unit 4. The travel route storage unit 21 includes a ROM, a RAM, an HDD, and the like. Recording medium.

  Further, the navigation device 20 is provided with a route azimuth calculating means 22 comprising a computer equipped with a CPU, ROM, RAM, etc., and this route azimuth calculating means 22 is obtained from the travel route recorded in the travel route storage means 21. The calculated azimuth is calculated as the running azimuth.

  In addition, the route search unit 6 sets a virtual destination based on the travel direction calculated by the route direction calculation unit 22. In the present embodiment, the travel route storage means 21 and the route direction calculation means 22 also constitute prediction means.

  Next, a navigation method will be described with reference to FIGS.

  FIG. 10 is a flowchart of route guidance processing. In FIG. 10, first, the current position of the host vehicle is acquired by the position calculation means 4 (step S41), and the acquired current position is stored in the travel route storage means 21 (step S42).

  Next, it is determined whether or not a setting for performing route guidance for avoiding traffic jams when the destination is not set in advance is made by the input means 2 (step S43), and route guidance is not performed when the destination is not set. If it is determined that the current processing is terminated, and if it is determined that route guidance is to be performed when the target time is not set, it is determined whether or not the road traffic information receiving means 3 has acquired traffic obstacle information. (Step S44).

  When the traffic obstacle information is acquired in step S44, the route direction calculation means 22 calculates the travel direction of the vehicle based on the travel route to the current position stored in the travel route storage means 21 (step S45).

  Next, a virtual destination is predicted based on the map information stored in the map data storage unit 5 and the travel direction calculated by the route direction calculation unit 22, and on the route to the predicted virtual destination. When a traffic obstacle occurs, a route that avoids the traffic obstacle is searched (step S46).

  Next, prior to performing route guidance that avoids traffic obstacles, the output means 7 informs that route guidance is to be performed (step S47), and then displays route information that avoids traffic obstacles together with map information. Is performed (step S48).

  FIG. 11 shows an example of a route search method that avoids a traffic jam when the direction obtained from the travel route to the current position is a travel direction and the road traffic information including a traffic obstacle is the traffic jam information.

  First, the road traffic information receiving means 3 receives the traffic occurrence points A5 and A6 as traffic jam information. Next, when approaching the traffic jam occurrence point A5, the route azimuth calculating means 22 calculates the travel route from the location P6 to the current position P7 as the travel azimuth D4 using the location P6 where the engine is applied as the azimuth reference point. Next, the route search means 6 searches for a route based on the flowchart of FIG.

  8 and 11, first, the directions D5 and D6 from the current position P7 to the points P8 and P9 that pass through the traffic congestion occurrence points A5 and A6 are obtained, and the directions D5 and D6 are compared with the traveling direction D4 of the own vehicle ( Step S31).

  In step S31, the point P9 of the azimuth D6 having the smallest azimuth difference is set as a route search target point (virtual destination) (step S32), and a route to the set target point is searched (step S33).

  In FIG. 11B, assuming that the routes L7, L8, and L9 are searched as route candidates (step S34), cost calculation is performed for each route (step S35). Cost weighting is the same as in the first embodiment.

  When the cost calculation is performed in step S35, if the route with the lowest cost is calculated (step S36), a route that avoids the traffic congestion occurrence point A6 is set (for example, L8). (Step S37), the route L8 is displayed by the output means 7 together with the road information. As shown in FIG. 11B, the route indicated by the solid line L8 is displayed on the output means 7 together with the road information.

  As described above, the navigation device 20 according to the present embodiment includes the travel route storage unit 21 that stores the travel route to the current position, and the route orientation calculation unit 22 that calculates the orientation obtained from the travel route as the travel direction. Since the virtual destination is set based on the traveling direction, the virtual destination can be set with high accuracy and an avoidance route close to the virtual destination can be set. Other effects are the same as those of the first embodiment.

  In the present embodiment, the azimuth reference point P6 when calculating the traveling azimuth is the place where the engine is started. However, the present invention is not limited to this. It may be set as an azimuth reference point regardless of whether the vehicle is stopped or traveling as in the previous place.

  As described above, the recording medium in which the navigation device, the navigation method, and the route guidance program according to the present invention are recorded can smoothly travel while avoiding traffic obstacles even when the destination is not set. It is useful as a navigation device that performs route guidance that avoids traffic jams and traffic restriction points when the destination is not set, a navigation method, a recording medium that records the route guidance program, and the like.

The block diagram of the navigation apparatus in the 1st Embodiment of this invention Flowchart of route guidance processing according to the first embodiment Route search diagram in the first embodiment The flowchart of the route setting process which avoided the traffic jam of 1st Embodiment The block diagram of the navigation apparatus in the 2nd Embodiment of this invention Flowchart of route guidance processing according to the second embodiment (A) Route target point calculation diagram in the second embodiment (b) Route search diagram in the second embodiment Flowchart of route setting processing avoiding traffic jams in the second and third embodiments The block diagram of the navigation apparatus in the 3rd Embodiment of this invention Flowchart of route guidance processing according to the third embodiment (A) Route target point calculation diagram in the third embodiment (b) Route search diagram in the third embodiment

Explanation of symbols

1, 10, 20 Navigation device 2 Input means (designating means)
3 Road traffic information receiving means 4 Position calculating means (position acquiring means)
5 Map data storage means (map information acquisition means)
6 Route search means (guidance means, prediction means, recommended route setting means)
7 Output means (guide means)
11 Current direction calculation means 21 Travel route storage means 22 Route direction calculation means

Claims (8)

Guiding means for setting a route to a virtual destination based on the travel locus of the host vehicle when the destination is not set and guiding a route avoiding the traffic obstacle when a traffic obstacle occurs on the route A navigation device characterized by comprising: Road traffic information receiving means for receiving road traffic information including at least traffic obstacle information, position acquisition means for acquiring the current position of the vehicle, map information acquisition means for acquiring map information, and when the destination is not set, Predicting means for predicting a virtual destination based on the map information and the current position; and when the traffic obstacle occurs on the route to the virtual destination predicted by the predicting means, A navigation device comprising guidance means for guiding an avoided route. 3. The navigation device according to claim 1, wherein the guidance unit notifies that the route guidance is performed prior to performing route guidance avoiding the traffic obstacle. 3. The prediction unit includes a current direction calculation unit that calculates a vehicle direction at a current position as a travel direction, and sets the virtual destination based on the travel direction. 3. The navigation device according to 3. The prediction unit includes a travel route storage unit that stores a travel route to a current position, and a route direction calculation unit that calculates a direction obtained from the travel route as a travel direction, and based on the travel direction, the virtual direction is calculated. 4. The navigation apparatus according to claim 2, wherein a destination is set. And a specifying unit that specifies setting and non-setting of the virtual destination, and the guide unit sets the virtual destination and sets the route when the setting of the virtual destination is specified by the specifying unit. The navigation apparatus according to any one of claims 1 to 5, wherein guidance is provided. A step of receiving road traffic information including at least traffic obstacle information; a step of acquiring a current position of the vehicle; a step of acquiring map information; and when the destination is not set, based on the current position and map information A step of predicting a virtual destination set by the traveling locus of the vehicle, and a route that avoids the traffic obstacle when the traffic obstacle occurs on the predicted route to the virtual destination A navigation method comprising the steps of: A recording medium that records a route guidance program that can be executed by a computer, wherein the route guidance program includes a process of receiving road traffic information including at least traffic obstacle information when a destination is not set, and a current vehicle A process of acquiring a position, a process of acquiring map information, a process of predicting a virtual destination set by a travel locus of the vehicle based on the current position and map information, and the predicted virtual destination A recording medium storing a route guidance program, comprising: a process for guiding a route avoiding the traffic obstacle when the traffic obstacle occurs on a route to the ground.

Images