JP4115881B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device. In particular, the present invention memorizes a detour (detour route) when detouring a congested road, and uses the route that passes this detour in a subsequent travel route search, so that the vehicle travels efficiently. The present invention relates to a navigation device that can be used.
[0002]
[Prior art]
A recent navigation apparatus can receive road information transmitted from, for example, a road traffic information center (hereinafter referred to as a VICS center) and know traffic jam information of a road on which a vehicle is traveling. Further, there is also provided a navigation device having a function of proposing a detour that can avoid the traffic congestion information obtained from the VICS center or the like during traveling or presenting the time to the traffic congestion point.
[0003]
For example, Patent Document 1 proposes a navigation device that predicts and responds to a traffic jam situation at a time when a vehicle actually passes through a traffic jam point, focusing on the fact that the traffic jam situation of a road changes every moment. Yes. Such a navigation device is effective for the user because the route guidance according to the time when the vehicle actually reaches the traffic congestion point can be performed.
[0004]
[Patent Document 1]
JP 2002-365068 A
[0005]
[Problems to be solved by the invention]
Currently, the traffic information provided from the VICS center is local through radio wave beacons installed on highways, optical beacons installed on ordinary roads, and the like. Therefore, when the vehicle approaches the traffic congestion point, the navigation device confirms that there is traffic congestion, and an optimal detour (detour route) is searched at that time. In general, such a detour route is set in order to avoid a traffic jam at the present time. Therefore, when the route on which the vehicle actually travels is viewed as a whole, the route includes waste. That is, in many cases, the vehicle travels on a wasteful (high cost) route as compared with the route setting when the detour route is assumed to travel from the beginning.
[0006]
In the case of the above-described navigation device of Patent Document 1, since the time when the vehicle reaches the traffic jam point is anticipated and handled, it is possible to set a route with less waste than in the case indicated above. However, this navigation device only repeats the same operation if it subsequently travels on the same road and encounters a traffic jam in the same way.
[0007]
That is, in the conventional navigation apparatus, the detour proposed in the event of a traffic jam is not stored, and the same proposal is repeated again when the same situation occurs thereafter. However, the user often travels on the same road repeatedly. If you encounter a natural traffic jam (a regular traffic jam) on a certain road and you can avoid the traffic jam in a short time through the detour route, then the traffic route will be set if you set the travel route that uses the detour route. The vehicle can be driven at a low cost. However, there is a fact that the conventional navigation device is not configured to utilize a detour that traveled in a traffic jam.
[0008]
Therefore, the main object of the present invention is to solve the above-described problems of the prior art, store a detour route that the vehicle has traveled to avoid traffic congestion, and use this detour route in later navigation to efficiently It is to provide a navigation device that performs a proper route setting.
[0009]
[Means for Solving the Problems]
  The above purpose isVehicle position detection means for detecting the position of the vehicle, route search means for searching for a travel route based on the detection result by the vehicle position detection means and road data, and whether the vehicle has traveled the route searched by the route search means A travel route confirmation means for confirming whether the vehicle has traveled a detour by the travel route confirmation means, and a storage means for storing detour data related to the detour, and the route after the storage In the route search by the search means, search route correction means for correcting the search result by the route search means so as to preferentially handle the detour, exceptional traffic information and natural traffic information due to traffic accidents, road construction, etc. Road information acquiring means for acquiring road information including the road information acquired by the road information acquiring means. Distribution is the only case was exceptional traffic jam information, are achieved by the navigation device characterized by inquiring whether to store the detour used at that time in said storage means to the user. Thereby, it is possible to suppress storage of unnecessary detours based on exceptional traffic jam information. Further, the search route correction means further includes a timekeeping unit for confirming at least the date and time, and when the road information acquired by the road information acquisition means is the natural traffic jam information, the day and time information on which the vehicle has traveled is bypassed. It is desirable to store in the storage means as a part of the road data.
Further, the object is to provide vehicle position detection means for detecting the position of the vehicle, route search means for searching for a travel route based on a detection result by the vehicle position detection means and road data, and a route searched by the route search means. A travel route confirmation means for confirming whether or not the vehicle has traveled, and a storage means for storing detour data relating to the bypass route when the travel route confirmation means confirms that the vehicle has traveled a bypass route; In the route search by the route search means after the storage, the search route correction means for correcting the search result by the route search means so as to preferentially handle the detour, and road information including information on the new road is acquired. Road information acquisition means, and when the road information acquired by the road information acquisition means is information on the new road, Serial search path correcting means also achieved by a navigation apparatus characterized by releasing the preferential treatment of the detour. According to this, even if a new road opens near the road on which a detour is set, it is possible to set a route in consideration of the new road. As a result, it is possible to cope with the road conditions that change every moment.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to the invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the navigation device according to the first embodiment. The navigation device 1 includes a disk driver 11, an operation unit 12, a communication device 13, a vehicle speed sensor 14, a GPS receiver 15, a gyro sensor 16, a VICS sensor 17, a reverse sensor 18, a navigation controller 20, a display 40, and a speaker 41. Yes.
[0019]
The disk driver 11 reads data and programs from various map data necessary for map display, route search, and the like and recording media such as a CD-ROM, DVD, and HDD that store programs as necessary. The operation unit 12 is a remote controller or input keys for the user to input various instructions to the navigation controller 20. The communication device 13 is an in-vehicle phone for communicating with a service center (a service center of a manufacturer or other organization). The vehicle speed sensor 14 outputs a vehicle speed corresponding to a pulse generated at every constant travel distance. The GPS receiver 15 receives a GPS signal sent from a GPS satellite and detects the current vehicle position and vehicle direction. More specifically, the GPS receiver 15 receives radio waves transmitted from a plurality of GPS satellites, performs three-dimensional positioning processing or two-dimensional positioning processing, calculates the absolute position and direction of the vehicle, and Is output together with the positioning time. The gyro sensor 16 is a sensor for detecting the vehicle direction. The vehicle azimuth is calculated by sampling a predetermined number of azimuths determined from the current vehicle position at the present time and the vehicle position one sampling time before ΔT.
[0020]
The VICS sensor 17 receives traffic information provided from the VICS center via an optical beacon or a radio beacon. When the vehicle passes under a transmitter that transmits this optical beacon or radio wave beacon, road information is transmitted from the transmitter to the vehicle. This road information includes transmitter position data. The reverse sensor 18 outputs a signal indicating reverse travel of the vehicle. The vehicle speed sensor 14, the gyro sensor 16, and the reverse sensor 18 enable autonomous navigation, and complement navigation using GPS. This navigation apparatus 1 grasps | ascertains the own vehicle position correctly by these sensors.
[0021]
Based on the image data output from the navigation controller 20, the display 40 displays a map image around the host vehicle together with a vehicle position mark, a departure point mark, a destination mark, etc., and a guide route or a detour route on this map. Or display a guidance route. The speaker 41 outputs various messages to the user based on the audio data output from the navigation controller 20.
[0022]
The navigation controller 20 includes a buffer memory 21, interfaces (I / F) 22 to 28, a control unit 29, a map drawing unit 30, an operation screen / mark generation unit 31, a route storage unit 32, a route drawing unit 33, and a mark storage unit 34. , A mark drawing unit 35, an image composition unit 36, a backup memory 37, an audio output unit 38, and a connection ID storage unit 39. The buffer memory 21 temporarily stores map data and programs read from the recording medium by the disk driver 11. The interfaces 22 to 28 are connected to the operation unit 12, the communication device 13, the vehicle speed sensor 14, the GPS receiver 15, the gyro sensor 16, the VICS sensor 17, and the reverse sensor 18, respectively, and form an interface with the control unit 29.
[0023]
The control unit 29 is configured by a microcomputer, for example, and controls the navigation controller 20 as a whole. For example, the control unit 29 processes the GPS signal of the GPS receiver 15 and the output signals of the vehicle speed sensor 14, the gyro sensor 16, the reverse sensor 18, and the VICS sensor 17 for autonomous navigation to determine the vehicle position and vehicle direction. Various processes related to navigation, such as searching for a route from the departure point to the destination, under the search conditions set using the calculated map data or the read map data, are executed.
[0024]
The map drawing unit 30 performs a map image drawing process using the map data read to the buffer memory 37. The operation screen / mark generating unit 31 generates various menu screens (operation screens) and various marks such as a vehicle position mark and a cursor according to the operation status. The route storage unit stores the guidance route data searched by the control unit 29. Specifically, the route storage unit 32 is changed during the search for data on all nodes (coordinates of points displayed in longitude and latitude) from the starting point to the destination of the guidance route searched by the control unit 29. Memorize the guidance route data. The control unit 29 has a timekeeping function, and stores in the route storage unit 32 data associating the route traveled by the vehicle with the date, time, day of the week, and the like.
[0025]
The route drawing unit 33 reads the guidance route data (node sequence) from the route storage unit 32 and draws the guidance route with a color and line width different from those of other roads. The mark storage unit 34 relates to a predetermined shape icon (brand icon, category icon, etc.) given as information indicating the position of the target property on the map screen and a simple shape mark given instead of this icon. Data is stored in advance. The mark drawing unit 35 performs a drawing process of data read from the mark storage unit 34 based on the control of the control unit 29. The image synthesis unit 36 synthesizes the images output from the map drawing unit 30, the operation screen / mark generation unit 31, the route drawing unit 33, and the mark drawing unit 35 and outputs them to the display 40.
[0026]
The audio output unit 38 outputs an audio signal to the speaker 41 based on the signal from the control unit 29. The connection ID storage unit 39 stores service center addresses, connection IDs, passwords, and the like of manufacturers and other organizations. The backup memory 37 is composed of a nonvolatile memory such as an EEPROM or a flash memory, and backs up various data to be backed up. As described above, the navigation device 1 has a normal function for guiding a mounted vehicle to a destination.
[0027]
Further, as will be described below, the navigation device 1 has a novel configuration in which a detour used to avoid this in a traffic jam is stored and used in subsequent navigation. FIG. 2 is a functional block diagram shown so that the characteristic configuration included in the navigation device 1 can be easily understood. An outline of a characteristic configuration included in the navigation device 1 will be described with reference to FIG. Such a new configuration is realized by the existing units shown in FIG. Details thereof will be described later.
[0028]
The navigation device 1 includes vehicle position detection means 2, road information acquisition means 3, route search means 4, travel route confirmation means 5, search route correction means 6, storage means 7 and time measurement means 8. The vehicle position detection means 2 detects the position of the vehicle on which the navigation device 1 is mounted, and supplies the detection signal to the route search means 4 and the travel route confirmation means 5. The road information acquisition unit 3 supplies traffic information acquired from the outside to the route search unit 4. The route search means 4 searches for an efficient (low cost) travel route from the departure point to the destination, and on the road that travels based on the information supplied from the vehicle position detection means 2 and the road information acquisition means 3. When there is a traffic jam, an efficient detour is searched from the current position of the vehicle.
[0029]
The travel route confirmation unit 5 confirms whether or not the vehicle has actually traveled on the detour searched by the route search unit 4. For this travel confirmation, the travel route confirmation means 5 uses the detection signal of the vehicle position detection means 2 and the search result of the route search means 4. When the vehicle actually travels on the detour searched by the route search unit 4, the search route correction unit 6 gives a search result preferentially treating the detour in the route search by the route search unit 4 thereafter. To control. That is, when the search route correction means 6 receives a signal from the travel route confirmation means 5 that the vehicle has actually traveled on the detour searched by the route search means 4, the route that passes this detour becomes a new basic route. The search result of the route search means 4 is corrected so that it becomes.
[0030]
  The search route correction means 6 stores the detour in the storage means 7 when it receives a signal from the travel route confirmation means 5 that the vehicle has actually traveled the detour searched by the route search means 4. The search route correction means 6 monitors the search operation by the route search means 4 and corrects and stores the search result if the route setting is related to the detour stored in the storage means 7. Control the route including the detour to be the basic route. Therefore, the user can travel from the beginning on a preferable route including a road that can deal with traffic jams. That is, according to the present navigation device 1, it is efficient (low cost) from the beginning using the past detour history.NaRoute setting is executed. It is desirable that the search route correction means 6 is configured to check the date and time of the month, the day of the week, etc. from the time measuring means 8 so as to grasp the situation in which the user has traveled the detour. This point will be described later.
[0031]
Each means 2-8 shown in FIG. 2 is implement | achieved by each part contained in the navigation apparatus 1 shown in FIG. That is, the vehicle position detection means 2 is realized by the vehicle speed sensor 14, the GPS receiver 15, the gyro sensor 16, and the reverse sensor 18. The road information acquisition unit 3 is realized by the VICS sensor 17. The route search unit 4, the travel route confirmation unit 5, the search route correction unit 6, and the time measuring unit 8 are realized by the control unit 29. The storage unit 7 is realized by the route storage unit 32. The general operation when each unit shown in FIG. 2 functions is as described above. Further, the details of the search route correction executed by the control unit 29 as the main part will be described below in more detail.
[0032]
FIG. 3 is a diagram shown for explaining how the search route is corrected executed by the control unit 29. FIG. 3A shows an initial guidance route when the control unit 29 functions as the route search means 4 to search from the departure point (Start) to the destination (Goal). If there is no traffic jam, the vehicle will travel on this guide route RU1. Next, FIG. 3B shows a detour in which the control unit 29 functions as the route search unit 4 to avoid this when the VICS sensor 17 acquires information that a traffic jam TG has occurred on the guidance route RU1. A case where a route is searched and a detour DR is guided is shown. The user can avoid a traffic jam by traveling along the detour DR. The traffic jam handling up to here is the same as that of the conventional navigation device.
[0033]
Here, in the conventional navigation apparatus, when the destination is reached through the steps of FIGS. 3A and 3B, the traveling history is reset. Thus, for example, if the user travels the same route several days later and encounters a traffic jam in the same way, the bypass route is searched in the same manner based on the information at that time regardless of the past travel. . However, the detour route set in order to avoid the traffic jam is for avoiding the traffic jam, and therefore, there is a lot of waste when looking at the entire route traveled by the vehicle. In other words, the conventional navigation apparatus has repeated such waste.
[0034]
  In contrast, the control unit 29 of the navigation device 1 corrects the search route as shown in FIG. At this time, the control unit 29 functions as the travel route confirmation unit 5 and the search route correction unit 6. When the control unit 29 confirms that the vehicle has traveled on the detour DR, the control unit 29 stores the detour DR in the route storage unit 32. Then, for example, in the subsequent route search, if the destination is the same destination, the detour route DR is corrected to a search result that is preferentially proposed. That is, as shown in FIG. 3C, when the user travels along the detour DR, the control unit 29 displays the search result so that the route that travels along the detour DR thereafter is adopted as the basic route BR. Correct it. As for this basic route BR, a part of the initial route may be simply a route obtained by changing the detour DR, but it must pass through the detour DR.TheIt is more desirable to search again based on the premise. By searching in this way, the detour DR is efficiently incorporated into the travel route, so that the route setting without waste as a whole can be performed.
[0035]
  The correction of the search route by the control unit 29 described above is preferably set so that it is executed only when the required time to the destination is shortened by the vehicle traveling on the detour DR. In this way, in order to confirm the time effect when traveling on the detour DR, the control unit 29 itself may be provided with a time measuring function or may be separately provided in the navigation device 1. For example, even if traveling on the detour DR and avoiding a traffic jam, it is less meaningful to forcibly correct the search route unless the required time is shortened. In this regard, when the required time is shortened, the control unit 29 may be set to automatically correct the search route. In addition, the route that passes through the detour DR is the basic route thereafter.or notThe confirmation message may be displayed on the display 40 in FIG. 1 and the user's instruction may be obtained from the operation unit 12.
[0036]
  In addition, the control unit 29 can change the route to another (new) route.TheEven when a search is performed, if the vehicle travels on a road that already has a detour DR in another route, the search result is similarly corrected. This point will be described with reference to FIG. FIGS. 4A to 4D are diagrams for explaining the contents executed by the control unit 29 when the road RU1 in which the detour DR is set is included when another travel route is searched. It is. As shown in FIG. 4A, even when the starting point (Start) and the destination (Goal) are different, the road RU1 that has traveled before that is often included. Then, as shown in FIG. 4B, when there is a history that the detour DR is set on the road RU1, that is, when the detour DR is stored in the route storage unit 32, the control unit 29 As shown in FIG. 4C, priority is given to a route search result using the detour DR while avoiding the traffic jam TG. With this configuration, the detour route DR stored in the route storage unit 32 can be effectively used even when traveling on different routes.
[0037]
However, as shown in FIG. 4D, it is desirable that the control unit 29 is set so as to search for a route again when the detour DR is adopted. By setting in advance in this way, a more efficient basic route BR including the detour DR can be set instead of the route ER included first. As described above, the control unit 29 uses the past congestion avoidance history to correct the searched route, so that the navigation apparatus 1 can propose an optimal travel route by setting an efficient route while avoiding the congestion.
[0038]
FIG. 5 is a flowchart showing an example of the navigation operation by the navigation device 1. With this flowchart, the superior point of the navigation device 1 can be understood more clearly. This flowchart is started by a route search instruction from the operation unit 12 by a user and executed by the control unit 29, for example. The control unit 29 starts route search (S102) and searches for an efficient route. And the control part 29 confirms whether this searched route | route passes the past traffic congestion point. That is, the control unit 29 confirms whether or not the searched route travels on a congested road corresponding to the detour DR stored in the route storage unit 32.
[0039]
If it is the first search route, this step (S) 102 is NO (NO), and the processing of step 200 is started. Here, assuming that the route searched by the control unit 29 is the first, the processing after step 200 will be described first. The control unit 29 acquires traffic jam information from the VICS center from the sensor 17 (S201), and continues monitoring whether there is traffic jam on the travel route (S202). If it is confirmed in step 202 that there is a traffic jam, a predicted time calculation due to this traffic jam is calculated (S203), an effective detour route that avoids this traffic jam is searched, and the user is guided by the display 40 or the like, for example. . At the same time, the measurement of elapsed time is started (S204).
[0040]
In the next step 205, the control unit 29 uses the signal from the GPS receiver 15 or the like to check whether or not the user has traveled on the proposed detour. If it is confirmed that the user is traveling on the detour presented in step 205, it is confirmed whether the time has been shortened by this detour (S206). This step 206 is incorporated as a more preferred form as described above. Only when the time can be shortened by adopting the detour, the route search is preferentially handled.
[0041]
When it is confirmed that the time has been shortened due to the vehicle traveling on the detour, the control unit 29 stores the detour in the route storage unit 32 as an effective traffic jam avoidance history (S207). Then, when the route guidance is finished (S208), the process of this flowchart is finished. The above processing is performed and an effective detour is stored in the route storage unit 32.
[0042]
  Now, in the state where the predetermined detour is stored in the route storage unit 32 as described above, this flowchart is started again and the route search is started (S101). Then, it is confirmed whether or not the searched route is the same as the previous time or whether the searched route passes the road set with the detour (S102). If the searched route passes this detour, search again as passing through this detour (S103),ThanAn efficient route is specified (S104, S105). Thereafter, the processing after step 200 described above is executed. In addition, the process by step 104 and step 105 is a more preferable process which searches an efficient route | route when passing a detour. The flow may advance from step 103 to step 200.
[0043]
FIG. 6 is a block diagram showing a navigation device 100 according to the second embodiment of the present invention. FIG. 6 shows a characteristic configuration corresponding to FIG. 2 described above. The same parts as those in FIG. 2 are denoted by the same reference numerals. The navigation device 100 includes a correction update unit 9 for further updating the search result corrected by the search route correction unit 6. The correction update means 9 is a means added so as to be able to cope with a case where, for example, a new road is opened.
[0044]
  In the above-described embodiment, no consideration is given to the opening of a new road. Therefore, even if a new road is opened near the road where the detour is set, a search result that adopts the detour may be given priority without considering this road. like thisNaIn order to suppress the occurrence of the situation, referring to the information acquired from the VICS sensor 17 or the like, the correction update means 9 for further correcting the search route corrected by the search route correction means 6 is provided.BookIt is an embodiment. In the case of the present navigation device 100, it can be provided as a more preferable navigation device that can cope with ever-changing road conditions. The correction / update means 9 included in the navigation device 100 can also be realized by the control unit 29 described above.
[0045]
As a modification of the first embodiment described above, when the road information of the road information acquisition means includes information with a new road, the search route correction means 6 preferentially handles the detour. Even when there is no setting, an effect similar to that of the second embodiment can be obtained.
[0046]
Regarding the two embodiments described above, the correction of the search route by the control unit 29 is preferably set in consideration of the month, day, day of the week, time, and the like when the vehicle traveled on the detour route DR. For example, roads are generally congested at the end of the month. If you happen to drive on a road on such a day, you will encounter traffic jams on other days when there is no traffic. In addition, roads are congested exceptionally when road construction is being performed or there is a traffic accident. In order to deal with such an exceptional traffic jam, a confirmation message as to whether or not the alternative route DR is to be the basic route thereafter is displayed on the display 40 in FIG. It is desirable to set to follow the user instructions. Similarly, some users have traveled on the road because a detour route is presented by the navigation device, but may not want to travel next time. In order to cope with such a case, a confirmation message as to whether or not the detour DR should be the subsequent basic route is displayed on the display 40 in FIG. 1 so that the user's intention can be confirmed. Is desirable.
[0047]
The navigation device of the above-described embodiment includes a vehicle position detection means 2, a road information acquisition means 3, a travel route confirmation means 5 and the like as a configuration for storing a detour, and searches and stores a detour. It is an automatic device that does not burden the user. However, when the vehicle deviates from the proposed initial driving route, the user is inquired, such as "Is the detour due to traffic jams", and is stored as a detour when the user responds "High" with a device such as a remote You may employ | adopt the structure of memorize | storing in a part.
[0048]
The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.
[0049]
【The invention's effect】
As described above, according to the present invention, since the detour route in which the vehicle has traveled in a traffic jam is stored and used for setting a later travel route, navigation that can efficiently guide the travel route corresponding to the traffic jam An apparatus can be provided. In particular, only when the required time to the destination is shortened, it is possible to propose a travel route that can reliably shorten the time by storing the detour in the storage unit.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation device according to a first embodiment.
FIG. 2 is a functional block diagram shown so that a characteristic configuration included in the navigation device shown in FIG. 1 can be easily understood.
FIG. 3 is a diagram for explaining a state of search route correction executed by a control unit included in the navigation device.
FIG. 4 is a diagram for explaining the contents executed by the control unit when a road set by a detour when a new route search is performed is included.
FIG. 5 is a flowchart showing an example of operation by the navigation device.
FIG. 6 is a block diagram showing a navigation device according to a second embodiment.
[Explanation of symbols]
1,100 Navigation device
2 Vehicle position detection means
3 road information acquisition means
4 Route search means
5 Travel route confirmation means
6 Search route correction means
7 Memory means
8 Timekeeping means
9 Correction and update means
14 Vehicle speed sensor
15 GPS receiver
16 Gyro sensor
17 VICS sensor
18 Reverse sensor
29 Control unit
32 Route storage unit

Claims (3)

Vehicle position detecting means for detecting the position of the vehicle;
  Route search means for searching for a travel route based on the detection result by the vehicle position detection means and road data;
  Travel route confirmation means for confirming whether the vehicle has traveled the route searched by the route search means;
  Storage means for storing detour data related to the detour when the travel route confirming means confirms that the vehicle has traveled the detour;
  Search route correction means for correcting a search result by the route search means so as to preferentially handle the detour in the route search by the route search means after the storage;
  Road information acquisition means for acquiring road information including exceptional traffic congestion information and natural traffic congestion information caused by traffic accidents, road construction, etc.,
  The search route correction means asks the user whether or not to store the detour used at that time in the storage means only when the road information acquired by the road information acquisition means is the exceptional traffic jam information. A navigation device characterized by inquiring. The searched route correction means further includes a timekeeping unit for confirming at least the date and time, and when the road information acquired by the road information acquisition means is the natural traffic jam information , information on the date and time the vehicle traveled is detour data. The navigation device according to claim 1 , wherein the navigation device stores the data in the storage unit as a part of the navigation device. Vehicle position detecting means for detecting the position of the vehicle;
  Route search means for searching for a travel route based on the detection result by the vehicle position detection means and road data;
  Travel route confirmation means for confirming whether the vehicle has traveled the route searched by the route search means;
  Storage means for storing detour data related to the detour when the travel route confirming means confirms that the vehicle has traveled the detour;
  Search route correction means for correcting a search result by the route search means so as to preferentially handle the detour in the route search by the route search means after the storage;
  Road information acquisition means for acquiring road information including information on the new road,
  The navigation apparatus according to claim 1, wherein when the road information acquired by the road information acquisition means is information on the new road, the search route correction means cancels the preferential treatment of the detour.

Images