JP3955482B2 - Car navigation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-vehicle navigation system that guides and guides a route on which a vehicle should travel, and more specifically, to an in-vehicle navigation system that provides guidance only by simple display of characters and symbols without displaying a map. .
[0002]
[Prior art]
Current in-vehicle navigation systems can be broadly classified into two.
One of them is an in-vehicle navigation system having many functions, equipped with a high-performance display capable of displaying characters, graphics, pictures, etc. in a fine and colorful manner and also capable of projecting TV broadcasts. In such a multi-function in-vehicle navigation system, the current position can be easily confirmed by the driver by displaying the position of the host vehicle on the map. In addition, when guiding to an arbitrary destination, it is possible to provide guidance that is easy for the driver to understand by changing the color of the recommended route or displaying an enlarged map at an intersection. In addition, in a traffic jam, not only the traffic jam information is displayed in characters, but also the traffic jam position is displayed on the map so that the driver can easily check the traffic jam position. In this way, if a multifunctional vehicle-mounted navigation system equipped with a high-performance display is used, the driver can easily collect necessary information visually.
[0003]
The other is an in-vehicle navigation system having a minimum necessary function, equipped with a display (not high performance) that can display only simple characters and symbols, etc., which is mainly used in the United States. In such an in-vehicle navigation system, a map is not displayed, and guidance is performed by indicating a distance to a destination, a traveling direction at an intersection, and the like with simple numerical values, arrows, and the like. For this reason, this simple navigation method is also called a turn-by-turn method.
This turn-by-turn vehicle-mounted navigation system has the advantage that the system device is inexpensive because the display to be equipped need not have high performance. Further, since the visual information displayed on the display is the minimum necessary content, the frequency with which the driver stares at the display inevitably decreases. Therefore, when using a turn-by-turn vehicle-mounted navigation system, the driver has the advantage that the vehicle can be driven more safely than when using the multifunctional vehicle-mounted navigation system described above.
[0004]
The difference between the display screen of the multi-function in-vehicle navigation system and the display screen of the turn-by-turn in-vehicle navigation system is, for example, the paper “Turn-by-Turn Displays versus Electronic Maps: An On-the-Road” by the University of Michigan. It can be easily understood by referring to the figure described on page III of “Comparison of Driver Glance Behavior” (Report No. UMTRI-98-37, 1999, 1).
[0005]
[Problems to be solved by the invention]
However, in the above-described turn-by-turn in-vehicle navigation system, the visual information displayed on the display is the minimum necessary content, and thus the driver often feels uneasy during the guidance guidance. This anxiety is thought to arise from the following.
[0006]
One of the causes of anxiety is that it is difficult to specify an intersection that should be turned only by displaying an arrow in guidance guidance at an intersection. When intersections are continuous at a narrow interval as in a city, it is very difficult to specify the intersection even if the distance to the target intersection is displayed on the display. Even if an intersection name or a road name is displayed on the display, the name is not always shown at every actual intersection, so that it is difficult to specify the target intersection. Even if the target intersection can be specified, if the intersection has a complicated branch shape, it may be difficult to specify the route to be traveled. For example, there is a case where there is a 90 ° right turn route and a 150 ° right turn route at the intersection of five-way road. In this case, it can be said that it is difficult for the driver to specify the route even if an arrow that matches the angular direction to be turned right is displayed on the display.
[0007]
For this reason, when an intersection that should be turned in this way cannot be specified and a turn is made, or when a route cannot be specified at a complicated intersection and advancing through the intersection, the driver asks `` Is it okay to turn this intersection '' or `` This road I may have anxiety, "Is it good or not?"
Here, if the driver travels on the wrong route, both the multi-function in-vehicle navigation system and the turn-by-turn in-vehicle navigation system will indicate to the driver that the route has been mistaken, or indicate the route to the destination. The driver can be made aware of the wrong route by, for example, automatically obtaining again. On the other hand, when the driver travels on the correct route, the multi-function in-vehicle navigation system confirms that the driver is traveling on the correct route by confirming on the display that the vehicle position display is on the recommended route. Can be confirmed. However, in the turn-by-turn in-vehicle navigation system, there is no way to confirm that the vehicle is currently traveling on the recommended route. For this reason, while driving on the correct route, the driver may be worried that he may have mistaken for the road, but may be slow to respond from the navigation.
[0008]
In addition, even if it is only necessary to travel for many kilometers on suburban roads, the turn-by-turn in-vehicle navigation system has no way of confirming that the vehicle is traveling on the recommended route. May feel anxiety, "Is it really okay to run on this road all the time?"
Especially when driving on roads with unexpected changes (for example, roads that suddenly narrow, crank at right angles, or become unpaved mountain roads) Even though you are driving, you may be worried that you have entered the side street by mistake. Also, in situations where there is no need for guided guidance, such as driving on a single road with no branches at all, information from the in-vehicle navigation system is not provided at all for a certain period of time, so the driver may feel anxious. .
[0009]
Furthermore, even if the driver arrives at the destination according to the guidance guidance and the driver has no knowledge about the destination, the driver remains anxious about the next action to be taken.
That is, in the multi-function in-vehicle navigation system, since the map around the destination is displayed on the display when it arrives at the destination, the driver can obtain various information at the current position at least within the displayed range. it can. However, in the turn-by-turn in-vehicle navigation system, the driver can arrive at the destination based on the presented information, but cannot obtain information around the destination.
[0010]
Therefore, an object of the present invention is to provide a turn-by-turn in-vehicle navigation system capable of appropriately presenting information for resolving various concerns that the driver has as described above.
[0011]
[Means for Solving the Problems and Effects of the Invention]
The first invention is ,car Navigation system,
A data storage unit for storing map data, an input unit for inputting a destination, a position detection unit for detecting the current position of the vehicle, and a recommended route from the current position to the destination are obtained using the map data. A route search unit, a guide data generation unit that generates guide data necessary for guidance from the map data and the recommended route, a guidance guide unit that performs guidance guidance based on the guidance data according to the current position, and guidance guidance An output unit that outputs the content of guidance guidance executed by the unit by screen display and / or voice,
The guidance guidance unit is characterized in that guidance is provided to notify that the travel route is correct when the current position of the vehicle is on the recommended route after passing through the guidance point.
[0012]
As described above, according to the first aspect of the present invention, the driver is informed that the intersection is properly turned after the guidance at the intersection is completed. As a result, it is possible to eliminate the driver's anxiety that is doubtful about the route traveled, even though the intersection was turned right. In particular, the driver's anxiety can be further resolved by clearly indicating that “turned correctly”.
[0013]
The second invention is ,car Navigation system,
A data storage unit for storing map data, an input unit for inputting a destination, a position detection unit for detecting the current position of the vehicle, and a recommended route from the current position to the destination are obtained using the map data. Depending on the route search unit, the map data and the recommended route, guidance data generation unit for generating guidance data including guidance information necessary for guidance guidance and peripheral information corresponding to a predetermined place around the recommended route, and according to the current position A guidance guidance unit that performs guidance guidance based on guidance data, and an output unit that outputs the contents of guidance guidance executed by the guidance guidance unit by screen display and / or voice,
The guidance guidance unit is characterized in that guidance according to surrounding information is performed when the vehicle passes a predetermined location.
[0014]
As described above, according to the second aspect, the peripheral information related to the recommended route during travel is presented. As a result, the driver can be confident that the vehicle is traveling on the recommended route and can continue driving with peace of mind.
[0015]
The third invention is ,car Navigation system,
A data storage unit for storing map data, an input unit for inputting a destination, a position detection unit for detecting the current position of the vehicle, and a recommended route from the current position to the destination are obtained using the map data. A route search unit, a guide data generation unit that generates guide data including map information and recommended route and guidance data necessary for guidance guidance and predetermined destination information about the destination, and guidance according to the current position A guidance guidance unit that performs guidance guidance based on data, and an output unit that outputs the contents of guidance guidance executed by the guidance guidance unit by screen display and / or voice,
The guidance guidance unit is characterized in that when the vehicle arrives at the destination, the guidance guidance unit performs guidance according to the destination information.
[0016]
As described above, according to the third aspect, information about the destination is presented when the destination arrives. As a result, the driver can easily obtain knowledge around the destination even in a place where he / she has visited for the first time.
[0017]
A fourth invention is an in-vehicle navigation system according to the first invention, wherein the guidance guide unit is based on a probability presentation based on a proximity rate obtained from a distance from the current position of the vehicle to the recommended route and another route, It is characterized by providing guidance that informs that the travel route is correct.
[0018]
As in the fourth aspect of the present invention, if the driver is able to use the probability that the intersection has been turned correctly after the guidance at the intersection is completed, it can be left to the driver to judge the correctness. it can.
[0019]
A fifth invention is an in-vehicle navigation system according to the first invention, wherein the guidance data generation unit adds peripheral information corresponding to a predetermined location around the recommended route to the guidance information necessary for guidance guidance Generated guidance data,
The guidance guide unit further performs guidance according to surrounding information when the vehicle passes a predetermined place.
[0020]
A sixth invention is an in-vehicle navigation system according to the first invention, wherein the guidance data generation unit adds guidance information necessary for guidance guidance to predetermined destination information related to the periphery of the destination. Produces
The guidance guide unit further performs guidance according to destination information when the vehicle arrives at the destination.
[0021]
A seventh invention is an in-vehicle navigation system according to the first invention, wherein the guidance data generation unit includes peripheral information corresponding to a predetermined place around the recommended route and a purpose as guidance information necessary for guidance guidance. Generate guidance data with predetermined destination information about the surrounding area,
The guidance guide unit further provides guidance according to surrounding information when the vehicle passes a predetermined location, and further performs guidance according to the destination information when the vehicle arrives at the destination. .
[0022]
As in the fifth to seventh inventions, if guidance is performed by combining the first to third inventions, a synergistic effect can be expected.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of a turn-by-turn vehicle-mounted navigation system according to an embodiment of the present invention. In FIG. 1, the in-vehicle navigation system of the present embodiment includes an input unit 11, a position detection unit 12, a calculation processing unit 13, a data storage unit 14, and an output unit 15.
[0024]
The input unit 11 includes a controller for operating the in-vehicle navigation system, a microphone for collecting sound, and the like. By operation by this controller, the destination at the time of route search can be set, and various information can be searched. In addition, by speaking into the microphone, it is possible to execute almost the same operation as that performed by the controller. Operation information by the controller and audio information via the microphone are transmitted to the arithmetic processing unit 13.
[0025]
The position detection unit 12 includes a speed sensor, a gyro sensor, a GPS receiver, and the like. The speed sensor detects the moving speed of the vehicle. The gyro sensor detects the traveling direction of the vehicle. The GPS receiver detects the absolute position of the vehicle on the earth. Information detected by these sensors and receivers is used by the arithmetic processing unit 13 for map matching processing for correcting the current position on the map road.
[0026]
The arithmetic processing unit 13 performs various processes such as route search, guidance data generation, guidance guidance, map matching, and information search. In the route search process, a recommended route from the current position of the vehicle to the destination specified by the input unit 11 is obtained. In the guidance data generation process, guidance data necessary for guidance guidance such as presentation of a traveling direction at an intersection is generated based on the obtained recommended route. In the guidance guidance process, the guidance guidance of the travel route is sequentially executed according to the generated guidance data. In the map matching process, as described above, when the current position of the vehicle deviates from the map road based on the information detected by the position detection unit 12, the position is corrected. In the information search process, a specific location (destination) is searched as necessary from a zip code, an address, a telephone number, a genre, or a name using a database stored in advance in the data storage unit 14.
[0027]
The data storage unit 14 includes a CD-ROM, DVD-ROM, memory, or the like. The data storage unit 14 stores in advance data (hereinafter referred to as map data) necessary for performing a route search, information display, and the like, and these map data are used appropriately for each processing in the arithmetic processing unit 13. Is done.
[0028]
The output unit 15 includes a display and a speaker. The display cannot display a map as used in a turn-by-turn method, and can display only simple characters and symbols. The speaker is for providing necessary information to the driver by voice during guidance and the like.
[0029]
Hereinafter, a guidance and guidance method performed by the in-vehicle navigation system according to the embodiment of the present invention having the above-described configuration will be described with reference to FIGS.
FIG. 2 is a flowchart showing processing performed in the in-vehicle navigation system according to the embodiment of the present invention. FIG. 3 is a flowchart showing details of the guidance guidance process performed in step S105 of FIG. FIG. 4 is a flowchart showing details of the position detection process performed in step S201 of FIG. FIG. 5 is a flowchart showing details of the reroute process performed in step S204 of FIG. FIG. 6 is a diagram conceptually illustrating an example of guidance data generated in the arithmetic processing unit 13. 7 and 8 are diagrams for explaining an example of how to obtain the proximity rate x used for the passage determination.
[0030]
First, the overall flow of the in-vehicle navigation system will be described with reference to FIG.
An event request such as information search or route search instructed by the driver is acquired by the input unit 11 (step S101). The input unit 11 determines whether or not the acquired event request is a request for route search, and if so, sends the event request to the arithmetic processing unit 13 (step S102). The arithmetic processing unit 13 inputs an event request from the input unit 11 and information on the current position from the position detection unit 12, and executes a route search process to obtain a recommended route from the current position to the destination included in the event request. Obtained (step S103). The destination included in the event request is retrieved from the database stored in the data storage unit 14 based on the address, telephone number, or facility name input to the input unit 11. The route search process is executed according to a known algorithm such as Dijkstra method.
[0031]
When the recommended route is obtained, the arithmetic processing unit 13 executes guide data generation processing to create guide data in which information necessary for guidance is added to the recommended route (step S104). Details of the guidance data will be described later. Next, the arithmetic processing unit 13 executes guidance guidance from the current position to the destination in accordance with the created guidance data, and presents the execution contents to the driver through screen output or text output by characters or simplified diagrams through the output unit 15. (Step S105). The details of the guidance guidance process will be described later. The above processing is repeatedly performed until the system is terminated, for example, until there is a power-off event request from the input unit 11 (step S106).
[0032]
Next, the guidance data will be described with reference to FIG.
As described above, the guidance data is obtained by adding information necessary for guidance guidance to the recommended route from the current position to the destination. The information to be added includes guide information and peripheral information.
[0033]
Guidance information is information about intersections (guide points) that should be turned on the recommended route, and includes an intersection name, a direction to turn, a distance to the intersection, a road name passing through the intersection, and the like. In the recommended route of FIG. 6, guidance information is added for each of the intersections C1 and C2. Sections D1 and D2 are sections for guiding guidance to intersections C1 and C2, respectively. For example, while a vehicle is traveling in section D1, it means that guidance information for intersection C1 is always presented. . Such section information is also added to the guidance data.
[0034]
On the other hand, the peripheral information is information for convincing the driver that the vehicle is currently driving on the correct road (recommended route) even when there is no guidance information. For example, “pass in front of ○○”, “pass through XX intersection”, “pass under the overpass”, “running on a two-lane road on one side”, “△△ can be seen on the right front If it is not always necessary for driving, it is useful (can check the current status). It is possible to freely set which position on the recommended route and which target the peripheral information is added to, but it is preferable to set a building that can be recognized at a glance as the target even during driving. In the recommended route of FIG. 6, peripheral guidance places are provided in advance as points P1 and P2, and corresponding peripheral information is provided when the vehicle passes these points.
[0035]
Here, it is preferable that the peripheral information is optimally set in consideration of the following driving conditions.
(1) Change the guidance method of surrounding information according to the time
At night, the number of information is set so that the surrounding information can be frequently guided because the view from the inside of the vehicle is worse than in the daytime. In addition, as daytime peripheral information, information on a target far from the vehicle is set. For example, “You can see Tokyo Tower on the right.” As for the peripheral information at night, since the field of view is narrowed, information on a target near the vehicle is set. For example, “I pass in front of a convenience store”. Such a setting can be realized by using a clock function or a brightness sensor provided separately.
(2) Change the guidance method of surrounding information according to the weather
When the weather is bad, such as when it is raining, the outlook from the car is worse than when the weather is nice. Accordingly, the peripheral information on a bad day sets information on a target near the vehicle, and the peripheral information on a good day sets information on a target far from the vehicle. Such a setting can be realized by using estimation by a sensor (for example, a humidity sensor) that is provided separately and capable of estimating weather.
(3) Change the guidance method of surrounding information according to the driver's emotions
When the driver is driving in a hurry, the surrounding information is set so that the information and the detailed information of the target ahead (far from the vehicle) can be guided. For example, after turning the next intersection, turn right at the third intersection and it is a 400m road. Expected arrival time is 40 seconds later. Such setting can be realized by the driver inputting a predetermined “rush mode”.
[0036]
Next, the guidance guidance process will be described with reference to FIG.
First, the position detection unit 12 detects the current position of the vehicle from information such as the moving speed, moving direction, and longitude / latitude coordinates on the earth detected by each sensor (step S201).
This position detection process is performed based on the flowchart of FIG. First, a point indicated by the longitude coordinate and the latitude coordinate is set as a detection point (step S301). Next, the road (nearest link) closest to the detection point is selected from the map data stored in the data storage unit 14 according to the detection point, the moving direction, and the moving speed (step S302). Finally, an intersection point where a perpendicular is dropped from the detection point to the closest link is determined as the vehicle position (step S303).
[0037]
Next, the arithmetic processing unit 13 determines whether or not the current position detected in step S201 is near the destination (step S202). Then, when the current position of the vehicle is not near the destination, that is, during guidance guidance, the following steps S203 to S210 are appropriately executed.
First, it is determined whether or not the current position is on the recommended route (step S203). If the current position is not on the recommended route, it is determined that the vehicle has deviated from the route on which the vehicle should travel, and processing for searching for the recommended route (reroute processing) is performed again (step S204). In this reroute process, a search for a new recommended route from the current position that deviates from the recommended route to the destination is performed, and, similar to the above-described guidance data generation process (step S104), the new recommended route is guided to the guidance. Guide data to which necessary information is added is generated (FIG. 5, steps S401 and S402).
[0038]
If the current position is on the recommended route, it is next determined whether or not it is immediately after the end of guidance (step S205). The term “immediately after the end of guidance” refers to a point in time when a guide is presented, and after the driver has acted based on this guide, the presentation of the guide is terminated. For example, in the guidance at the intersection, it is immediately after the guidance is terminated in response to the vehicle having completely turned the intersection. Here, the fact that the current position is on the recommended route immediately after the end of the guidance means that the driver has traveled the vehicle correctly according to the guidance. Therefore, if it is immediately after the end of the guidance, a passage determination indicating that the correct action has been taken is presented to the driver by screen display and / or voice output by the output unit 15 (step S206). At this time, the information presented to the driver as a pass judgment may be a clear information such as “Drived as guided” or “Turned right at the intersection”, or the proximity rate x as follows: May be displayed with a probability of “driving x% correctly”.
[0039]
For example, in step S302 of the position detection process described above, the next closest link R2 is selected together with the closest link R1. Then, a perpendicular line L1 from the detection point to the closest link R1 and a perpendicular line L2 from the detection point to the next closest link R2 are obtained (FIG. 7). From these, x = L2 / (L2 + L1) × 100 is calculated to determine the proximity rate x.
Further, a travel vector is obtained from the travel direction and travel speed obtained in step S301 of the position detection process described above, and an angle θ between the closest link R1 on the recommended route and the travel vector is obtained (FIG. 8). From these, x = (1−θ / π) × 100 is calculated to obtain the proximity ratio x.
[0040]
If it is not immediately after the end of guidance, it is next determined whether or not the current position is a guidance location (step S207). This guidance place refers to a place where guidance should be presented to the driver, such as when approaching an intersection to bend or when in an intersection. Whether or not the current position is a guidance location is determined based on guidance information added to the guidance data. When the current position is a guidance place (in the example of FIG. 6, intersections C1 and C2 and sections D1 and D2), the guidance by the output unit 15 shows the distance to the intersection to bend, the name of the intersection, the direction to bend, and the like. It is presented to the driver by display and / or audio output (step S208).
[0041]
If the current position is not a guidance location, it is next determined whether or not the current location is a surrounding guidance location (step S209). This peripheral guidance place refers to a place where guidance should be presented to the driver when an arbitrary point that is not particularly required for route guidance is reached. Whether or not the current position is a surrounding guidance place is determined based on surrounding information added to the guidance data. When the current position is a surrounding guidance place (points P1 and P2 in the example of FIG. 6), guidance such as “pass in front of the park” or “pass under the overpass” is displayed on the screen by the output unit 15 and It is presented to the driver by voice output (step S210).
This kind of surrounding information is safe for drivers who are driving on the right road in a turn-by-turn in-vehicle navigation system when there is little information displayed on the screen and it is difficult to grasp the current position. Is effective.
[0042]
If the current position is not the surrounding guidance location, after the reroute process is performed in step S204, the passage determination presentation process is performed in step S206, the guidance information presentation process is performed in step S208, and the step After the peripheral information presentation process is performed in S210, the process returns to step S201 and is repeatedly executed from the position detection process.
[0043]
On the other hand, if it is determined in step S202 that the current position of the vehicle is near the destination, that is, if the vehicle arrives at the destination according to the guidance, the destination information is presented (step S211). The destination information is not information for arriving at the destination but is detailed information in the vicinity of the destination. Specifically, information such as the direction and distance from the departure point, the name of the nearest station, sightseeing information near the destination, cityscape information, recommended restaurants, etc. are provided. In addition, when the destination is an event venue, information on vacant entrances may be provided, and when using park and ride, information indicating the direction of the train stop may be provided. Good. Such information provision can be realized by using a database stored in the data storage unit 14 in advance.
[0044]
As described above, according to the turn-by-turn vehicle-mounted navigation system according to the embodiment of the present invention, the driver is informed that the intersection is properly turned after the guidance at the intersection is completed. As a result, it is possible to eliminate the driver's anxiety that is doubtful about the route traveled, even though the intersection was turned right. In particular, it is possible to further resolve the driver's anxiety by clearly indicating that “turned correctly”, and by using the probability that “turned correctly x%”, the correctness judgment can be made. Can be left to.
Moreover, according to this vehicle-mounted navigation system, peripheral information related to the recommended route during travel is presented. As a result, the driver can be confident that the vehicle is traveling on the recommended route and can continue driving with peace of mind.
Furthermore, according to this in-vehicle navigation system, information near the destination is presented when the destination arrives. As a result, the driver can easily obtain knowledge around the destination even in a place where he / she has visited for the first time.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a turn-by-turn vehicle-mounted navigation system according to an embodiment of the present invention.
FIG. 2 is a flowchart showing processing performed in the in-vehicle navigation system according to the embodiment of the present invention.
FIG. 3 is a flowchart showing details of guidance guidance processing performed in step S105 of FIG.
4 is a flowchart showing details of a position detection process performed in step S201 of FIG.
FIG. 5 is a flowchart showing details of the reroute process performed in step S204 of FIG. 3;
FIG. 6 is a diagram conceptually illustrating an example of guidance data generated in an arithmetic processing unit 13;
FIG. 7 is a diagram for explaining an example of how to obtain a proximity ratio x used for passage determination;
FIG. 8 is a diagram for explaining an example of how to obtain a proximity rate x used for passage determination;
[Explanation of symbols]
11 ... Input section
12: Position detection unit
13 ... arithmetic processing unit
14: Data storage unit
15 ... Output section

Claims (6)

An in-vehicle navigation system,
A data storage unit for storing map data;
An input unit for inputting a destination;
A position detector for detecting the current position of the vehicle;
Using the map data, a route search unit for obtaining a recommended route from the current position to the destination;
From the map data and the recommended route, a guidance data generation unit that generates guidance data necessary for guidance,
A guidance guide unit for performing guidance guidance based on the guidance data according to the current position;
An output unit for outputting the content of guidance guidance executed by the guidance guidance unit by screen display and / or voice;
The in-vehicle navigation system according to claim 1, wherein the guidance and guidance unit performs guidance to notify that the vehicle is bent correctly when the current position of the vehicle is on the recommended route after turning an intersection . The in- vehicle navigation system according to claim 1, wherein the guidance guide unit performs guidance guidance without displaying a map . The guidance unit, the probability presented based on the current position said recommended route and proximity index obtained from the distance to the other path from the vehicle, characterized in that the guidance saying that the travel path is correct, claim The in- vehicle navigation system according to 1 or 2 . The guidance data generation unit generates guidance data in which peripheral information corresponding to a predetermined place around the recommended route is added to guidance information necessary for guidance guidance,
The route guidance unit, when the vehicle passes through a place where the predetermined, further characterized in that the guidance in accordance with the peripheral information, the vehicle-mounted navigation system according to claim 1 or 2. The guidance data generation unit generates guidance data in which predetermined destination information related to the periphery of the destination is added to guidance information necessary for guidance guidance,
The route guidance unit, when the vehicle arrives at the destination, further characterized in that the guidance in accordance with the destination information, vehicle navigation system according to claim 1 or 2. The guidance data generation unit, the guidance information required for guidance, the guidance data obtained by adding a predetermined destination information related to the peripheral information and neighborhood before Symbol destination corresponding to a predetermined location near pre Symbol recommended route Generate
The guidance guide unit further performs guidance according to the surrounding information when the vehicle passes through the predetermined location, and provides guidance according to the destination information when the vehicle arrives at the destination. The in-vehicle navigation system according to claim 1 or 2 , further performed .

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