JP2000020870A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device for improving the predicting precision of an arriving time to a destination. SOLUTION: An electronic controller 36 of a navigation device 20 calculates a traveling time Tb required for traveling on the recommended route (from an 'entering link' to an 'exit link') of an information center 10 based on a link traveling time received from the information center 10, and calculates a traveling time Ta required for traveling from the present location to the 'entering link' of the center area of the information center 10 on a set static path based on the average speed of each kind of road in the neighborhood of the present location received from the information center 10, and also calculates a a traveling time Tc required fro traveling from the 'exit link' of the center area of the information center 10 to the destination on a set static path based on the average speed of each kind of road in the neighborhood of the destination received from the information center 10. Then, an estimated arriving time Tm can be calculated based on a present time Tn and each traveling time Ta-Tc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device, and more particularly to a navigation device that predicts an arrival time at a destination based on information obtained by communication with an information center that collects traffic information. .

[0002]

2. Description of the Related Art In recent years, various navigation devices for finding a recommended route from a current position to a destination have been proposed. In such a navigation device, the arrival time at the destination can be reduced as much as possible. Accurate prediction is required. In other words, if the navigation device can provide the user with an accurate arrival time at the destination, the user can make a plan for a schedule after arrival (for example, meeting with a person or getting on a train). In addition, it is possible to focus on driving without paying attention to the arrival time, and a comfortable driving environment is obtained.

However, the method of predicting the arrival time, which has been generally performed in the past, simply obtains the result of simply dividing the distance from the current position to the destination by a preset average vehicle speed. Considering ever-changing traffic conditions, it is not always possible to run at an average vehicle speed, and thus there has been a problem that the accuracy of the predicted arrival time is low.

[0004] Therefore, by using VICS,
A technology is conceivable in which an average vehicle speed reflecting traffic conditions is received from VICS, and an arrival time is predicted using the average vehicle speed. However, even when VICS is used, only the average vehicle speed of the road targeted for VICS is provided.
When traveling on a road that is not subject to CS, the traveling time must be calculated using a preset average vehicle speed, and the accuracy of the predicted arrival time is not sufficient.

By the way, conventionally, Japanese Patent Publication No. 7-2141
As disclosed in Japanese Patent Application Publication No. 7, the location information indicating the current location and the destination is transmitted via a wireless line to an information center that collects traffic information in a predetermined center area. There has been proposed a navigation device that receives a center recommended optimal route (dynamic route) set in consideration of such factors and displays the dynamic route on a navigation map to provide route guidance. But,
The gazette does not disclose any technique for predicting the arrival time at the destination.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a navigation device capable of improving the accuracy of predicting the arrival time at a destination.

[0007]

According to the first aspect of the present invention, there is provided a position detecting means for detecting a current position of a vehicle, and various kinds of traffic information in a predetermined center area. Communication means for communicating with an information center to be collected via a wireless line. The vehicle further includes a static route calculating unit that calculates a route from a current position of the vehicle detected by the position detecting unit to a preset destination. Then, in the static route from the current location to the destination calculated by the static route calculation means, a link that is at least a predetermined distance from the current location and matches a link provided by the information center in the center area is set. There is provided an entry / exit link setting means for setting a link obtained first and obtained as an entry link, and setting a link immediately before reaching the destination as an exit link. Further, an arrival time calculating means for calculating an expected arrival time at the destination is provided.

[0008] The arrival time calculating means includes a position information of a current position of the vehicle detected by the position detecting means, a position information of a destination, an entry link and an exit set by the entry / exit link setting means. The link position information is transmitted via the communication means. Then, from the information center, information on the recommended route from the entrance link to the exit link in consideration of the current traffic condition, information on the traveling time required for traveling on the recommended route, traveling around the current location and the destination, Information on the possible average vehicle speed is transmitted. Therefore, each information from the information center is received via the communication means, and an expected arrival time is calculated based on the time required for traveling from the current position to the destination calculated based on the information.

Therefore, according to the present invention, the information transmitted from the information center (recommended route, traveling time required for traveling on the recommended route, average vehicle speed near the current location and the destination) is always the latest information. If the maintenance is performed in advance, the prediction accuracy of the predicted arrival time can be improved.

In the navigation device according to the first aspect of the present invention, the information on the average vehicle speed in the vicinity of the current position and the destination is set for each of the road types classified in advance. You may. In this case, for each road type included in the static route from the current location to the approach link calculated by the static route calculation unit, the arrival time calculation unit calculates the sum of the mileage of the road of the type. It is required for traveling from the current location to the approach link by dividing the sum of the travel distances by the average vehicle speed of the type of road near the current location received from the information center and adding the divided value for each type of road. Calculate the time. Similarly, for each road type included in the static route from the exit link calculated by the static route calculation means to the destination, the sum of the mileage of the road of the type is calculated, and the mileage of the mileage is calculated. Divide the sum by the average vehicle speed of that type of road near the destination received from the information center,
The time required for traveling from the exit link to the destination is calculated by adding the divided value for each type of road.

According to a third aspect of the present invention, in the navigation device according to the first or second aspect, the information on the average vehicle speed near the current location and the destination is set for each road. Good. In this case, the arrival time calculation means obtains a travel distance for each road on which the average vehicle speed included in the static route from the current position calculated by the static route calculation means to the approach link is set, By dividing the travel distance by the average vehicle speed of the road near the current location received from the information center, the time required for traveling from the current location to the approach link is calculated. Similarly, the travel distance is calculated for each road on which the average vehicle speed is included in the static route from the exit link calculated by the static route calculation means to the destination, and the travel distance is determined by the information center. By calculating the time required for traveling from the exit link to the destination by dividing by the average vehicle speed of the road near the destination received from the destination.

In the embodiments of the invention described below, "position detecting means" described in claims or means for solving the problem corresponds to the position detector 22, and "communication means" also corresponds to Similarly, the “static route calculation unit” corresponds to the communication device 34 and is used in S101 of the electronic control device
And also the "entry / exit link setting means"
Corresponds to the process of S104 in the electronic control unit 36,
Similarly, the “arrival time calculation means” is used in the electronic control device 36 in steps S203 to S209, S301 to S309, and S401.
To S409.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating a schematic configuration of a navigation system using the navigation device of the present embodiment.

The navigation system comprises a navigation device 20 of the present embodiment mounted on a vehicle and an information center 10 for providing various types of traffic information in a preset center area to the navigation device 20 via a wireless line. Have been. The information center 10 includes an external event collection device 12, a road network (road NW) data storage device 14, a communication device 16, and a control device 18.

The external event collection device 12 collects external events such as road conditions from various sensors S mounted near the road. The road network data storage device 14 stores a road map in the center area and various traffic information created based on the external events collected by the external event collection device 12.

The communication device 16 communicates with a navigation device 20 mounted on a vehicle via a wireless line such as an automobile telephone or a portable telephone. The control device 18 recommends a route (dynamic route) recommended by the information center 10 based on the information received from the navigation device 20 and various traffic information stored in the road network data storage device 14.
Calculate and so on.

The various types of traffic information created based on the external events collected by the external event collection device 12 include traffic congestion information indicating traffic congestion points and congestion sections, accidents, broken cars, obstacles on the road, construction works, and the like. Traffic obstruction information indicating work, traffic regulation information including temporary regulations such as suspension of traffic, speed regulation, lane regulation, on-ramp regulation, and chain regulation and their causes, etc. Parking lot information, etc. are included.

The navigation device 20 includes the position detector 2
2. Map data input device 24, operation switch group 26, display device 28, speaker 30, external memory 32, communication device 3.
4. An electronic control unit (ECU) 36 is provided. The position detector 22 includes a gyroscope 38, a vehicle speed sensor 40,
A GPS (Global Positioning System) receiver 42 is provided to detect the current location of the vehicle. The vehicle speed sensor 40 detects a traveling speed of a vehicle on which the navigation device 20 is mounted. The GPS receiver 42 receives a transmission radio wave from a GPS artificial satellite via a GPS antenna. In addition, since these sensors 38, 40, and 42 have errors having different properties, a plurality of sensors complement each other to improve the position detection accuracy. Depending on the required position detection accuracy, only a part of these sensors 38, 40, 42 may be used. In addition to these sensors 38, 40, 42, left and right steering wheels may be used. A sensor for calculating the direction by accumulating the steering angle of the vehicle obtained from the rotation difference or the like, a geomagnetic sensor, or the like may be used.

The map data input unit 24 inputs map data stored in a recording medium. The map data includes data representing road connections, map matching data for improving position detection accuracy, and the like. by the way,
As a recording medium on which map data is stored, a CD-ROM is generally used because of its data amount.
Another recording medium such as D or a memory card may be used.

The operation switch group 26 includes various switches for operating the navigation device 20. Specifically, the operation switch group 26 includes a switch for switching display contents to be displayed on the display device 28, and a switch for the user to reach the destination. A switch for setting a route (guidance route) is included.
In addition, as various switches constituting the operation switch group 26, a touch switch integrated with the display device 28 may be used, or a general mechanical switch may be used.

The display device 28 displays the current location of the vehicle, various types of traffic information received from the information center 10, and estimated arrival times on a map. The speaker 30 outputs a sound related to a route guidance process described later. The external memory 32 stores a path set by the electronic control unit 36 as described later,
The stored contents are backed up by a power supply (not shown).

The communication device 34 communicates with the information center 10 via a wireless line such as a car phone or a mobile phone.
The electronic control unit 36 is mainly configured by a known microcomputer including a CPU, a ROM, and a RAM.
In response to inputs from the position detector 22, the map data input device 24, and the operation switch group 26, the display device 28, the speaker 3
0, the external memory 32, and the communication device 34, and performs a route guidance process including a static route setting process and a dynamic route setting process.

Next, a static route setting process performed by the electronic control unit 36 will be described. FIG. 2 is a flowchart illustrating the static route setting process. First, in step (hereinafter, referred to as S) 101, the electronic control unit 36 calculates a static route based on a destination and a passing point set using the operation switch group 26. here,
The cost of the static route is calculated using the well-known Dijkstra method, and a route that minimizes the cost from the current position to the destination is selected. However, when a passing point is set, a route that minimizes the cost of each section from the current location to the passing point, from the passing point to the passing point, and from the passing point to the destination is selected.

Next, in S102, the electronic control unit 3
Step 6 determines whether there is a link in the center area provided by the information center 10 in the set static route. If there is no link, the process proceeds to S103, and if there is, the process proceeds to S104. In S103, the electronic control device 36 displays the display device 2 in accordance with the set static route from the current position to the destination.
8 and a speaker 3
Audible route guidance via 0 is performed. Here, the arrival time at the destination is obtained from a result obtained by simply dividing the distance from the current position to the destination by a preset average vehicle speed, as in the related art, and the estimated arrival time is displayed on the display device 28. . Then, the static route setting process ends.

The electronic control unit 36 stores the set route in the external memory 32, and deletes the set route stored in the external memory 32 when the vehicle reaches the destination and the route guidance becomes unnecessary. Since the content stored in the external memory 32 is backed up, the vehicle is stopped for a break during route guidance,
Even if the power supply to the navigation device 20 is cut off by turning off the ignition key or the like, the route being guided is maintained.

In S104, the electronic control unit 3
6 is a static route from the set current location to the destination,
A link that is at least a certain distance from the current location and that matches a link provided by the information center 10 in the center area is searched. Then, the link obtained first is referred to as “entry link”, and the link immediately before reaching the destination is referred to as “exit link”.

Next, at S105, the electronic control unit 3
6 transmits to the information center 10 via the communication device 34 the position information of each of the current location, the destination, the "entry link" and the "exit link", and the road type information of the road including the link. Then, the static route setting process ends.

Then, the information center 10 communicates the various traffic information collected by the external event collection device 12 with the communication device 16.
On the basis of the information received from the navigation device 20 (the current position, the destination, the position information of the “entry link” and the “exit link”, and the road type information of the road including the link) based on the “entry link” ”To“ Exit Link ”
Calculate the recommended route up to.

The information center 10 calculates the time required to travel on each link constituting the recommended route (hereinafter referred to as link travel time) based on the various traffic information, and receives the time from the navigation device 20. The average vehicle speed is calculated for each road type (expressway, toll road, general road, and other roads) near the current and destination. General roads are prefectural roads, city roads, town roads, and village roads.
Other roads are expressways, toll roads, and other roads (such as agricultural roads and forest roads). The average vehicle speed of the road type is an average of vehicle speeds at which the vehicle can travel on the road.

The information center 10 transmits the calculated information (recommended route, link travel time of each link, information on the current vehicle speed and the average vehicle speed for each road type near the destination) and various traffic information. Send to Here, the calculated information is calculated based on the various types of traffic information, and thus accurately reflects the current traffic conditions.

FIG. 3 is a schematic diagram schematically showing the data structure of information transmitted from the information center 10. next,
The dynamic path setting process performed by the electronic control unit 36 will be described. FIG. 4 is a flowchart for explaining the dynamic route setting process.

First, in S201, the electronic control unit 3
6 receives information (recommended route, link travel time of each link, information of current and average vehicle speed for each road type near the destination) received from the information center 10 via the communication device 34, and transmits the new information. The information is updated by replacing the old information received earlier.

Next, in S202, the electronic control unit 3
6 sets a dynamic route by replacing the set static route from the “entry link” to the “exit link” with the recommended route received from the information center 10. By the way, as the update conditions of the dynamic route once set, there are the following conditions (1) to (4).

Each time a predetermined time (for example, 5 minutes) elapses. Each time the vehicle equipped with the navigation device 10 travels a predetermined distance. When an error occurs in communication between the information center 10 and the navigation device 10.

When the setting of the static route is completed. When the vehicle equipped with the navigation device 10 passes through a preset passing point. When a vehicle equipped with the navigation device 10 enters from outside the center area of the information center 10 to inside.

When such an update condition is satisfied, the dynamic route is automatically updated, so that the user does not need to update the dynamic route by himself / herself, and based on the dynamic route reflecting the latest traffic conditions. The traveling route can be guided. Next, in S203, the electronic control unit 36 calculates the sum of the link travel times of the links on the recommended route received from the information center 10, and thereby the travel required for traveling from the "entry link" to the "exit link". Time T
Find b.

Next, at S204, the electronic control unit 3
Step 6 determines whether or not there is a link outside the center area provided by the information center 10 in the set static route. If not, the process proceeds to S205, and if there is, the process proceeds to S206. In S205, the electronic control unit 36 determines the expected arrival time Tm by adding the traveling time Tb calculated in S203 to the current time Tn (Tm = Tn + T).
b).

Next, at S207, the electronic control unit 3
6 is "entry link" and "exit link" from the current location
From the "entry link" to the "exit link" according to the dynamic route, and perform the visual route guidance via the display device 28 and the auditory sense via the speaker 30. Guide you through the route. Then, the calculated estimated arrival time Tm is displayed on the display device 28, and the dynamic route guidance processing ends.

In S206, the electronic control unit 3
6 is an “entry link” from the current location based on the average vehicle speed for each road type near the current location received from the information center 10.
The travel time Ta required for traveling up to is calculated. FIG.
It is a flowchart for demonstrating the process of S206.

First, in S301, the electronic control unit 3
6 determines whether or not there is an expressway in a static route from the set current location to the "entry link".
The process moves to S302, and if not, the process moves to S303. S3
At 02, the electronic control unit 36 obtains the sum of the mileage of the expressway included in the static route from the current location to the “entry link”, and receives the sum of the mileage of the expressway from the information center 10 at the current location. By dividing by the average vehicle speed of the nearby highway, the highway traveling time Tαa is calculated. Then, control goes to a step S303.

In S303, the electronic control unit 36
It is determined whether or not there is a toll road in the static route from the set current location to the “entry link”.
The process moves to S305, and if not, the process moves to S305. In S304, the electronic control unit 36 obtains the sum of the mileage of the toll road included in the static route from the current location to the "entry link", and receives the sum of the mileage of the toll road from the information center 10 from the information center 10. The toll road travel time Tβa is calculated by dividing by the average vehicle speed of the nearby toll road. Then, control goes to a step S305.

In S305, the electronic control unit 36
It is determined whether or not there is an ordinary road on a static route from the set current location to the “entry link”.
The process proceeds to S307 if not, and proceeds to S307. In S306, the electronic control unit 36 obtains the sum of the mileage of the general road included in the static route from the current location to the “entry link”, and receives the sum of the mileage of the general road from the information center 10 from the information center 10. The general road traveling time Tγa is calculated by dividing by the average vehicle speed of the nearby general road. Then, control goes to a step S307.

In step S307, the electronic control unit 36
It is determined whether or not there is another road in the static route from the set current location to the “entry link”.
08, and if not, the process proceeds to S309. S30
At 8, the electronic control unit 36 obtains the sum of the travel distances of the other roads included in the static route from the current position to the “entry link”, and receives the sum of the travel distances of the other roads from the information center 10. The other road travel time Tδa is calculated by dividing by the average vehicle speed of other roads near the current location. Then, control goes to a step S309.

In S309, the electronic control unit 36
The running time Ta from the current location to the “entry link” is calculated by adding the running times Tα to Tδ (Ta
= Tαa + Tβa + Tγa + Tδa). Next, S20 of FIG.
In 8, the electronic control unit 36 calculates a travel time Tc required for traveling from the “exit link” to the destination based on the average vehicle speed for each road type near the destination received from the information center 10.

The processing in S208 will also be described with reference to the flowchart shown in FIG. First, in S401, the electronic control unit 36 determines whether or not there is an expressway in a static route from the set “exit link” to the destination. If so, the process proceeds to S402; S40
Move to 3.

In S402, the electronic control unit 36
The sum of the mileage of the expressway included in the static route from the “exit link” to the destination is obtained, and the sum of the mileage of the expressway is obtained by the average vehicle speed of the expressway near the current location received from the information center 10. By dividing, the expressway traveling time Tαc is calculated. Then, control goes to a step S403.

In S403, the electronic control unit 36
It is determined whether or not there is a toll road in the static route from the set “exit link” to the destination.
The process proceeds to S405, and if not, the process proceeds to S405. In S404, the electronic control unit 36 obtains the total travel distance of the toll road included in the static route from the “exit link” to the destination, and receives the total travel distance of the toll road from the information center 10. By dividing by the average vehicle speed of the toll road near the current location, the toll road travel time Tβc is calculated. Then, control goes to a step S405.

In S405, the electronic control unit 36
It is determined whether or not there is an ordinary road in the static route from the set “exit link” to the destination.
The process proceeds to S407 if there is no such device. In S406, the electronic control unit 36 obtains the sum of the mileage of the general road included in the static route from the “exit link” to the destination, and receives the sum of the mileage of the general road from the information center 10. The general road traveling time Tγc is calculated by dividing by the average vehicle speed of the general road near the current location. Then, control goes to a step S407.

In S407, the electronic control unit 36
It is determined whether or not there is another road in the static route from the set “exit link” to the destination.
08, and if not, proceeds to S409. S40
At 8, the electronic control unit 36 obtains the sum of the mileage of the other roads included in the static route from the “exit link” to the destination, and receives the sum of the mileage of the other roads from the information center 10. The other road travel time Tδc is calculated by dividing by the average vehicle speed of other roads near the current location. Then, control goes to a step S409.

In step S409, the electronic control unit 36
The running time Tc from the “exit link” to the destination is calculated by adding the running times Tα to Tδ (Tc
= Tαc + Tβc + Tγc + Tδc). Next, S20 of FIG.
In 9, the electronic control unit 36 estimates the current time Tn by adding the running time Tb calculated in S203, the running time Ta calculated in S207, and the running time Tc calculated in S208 to the current time Tn. Arrival time Tm
(Tm = Ta + Tb + Tc). And S20
Move to 7.

FIG. 6 is an explanatory diagram showing the relationship between the travel times Ta to Tc, Tαa to Tδa, and Tαc to Tδc from the current location to the destination, the current time Tn, and the expected arrival time Tm. The electronic control unit 36 of the navigation device 10 includes:
Section B which is a recommended route (dynamic route) of the information center 10
Is calculated on the basis of the link travel time received from the information center 10. In the set static route, the travel time Ta required to travel in the section A from the current location to the “entry link” in the center area of the information center 10 is determined for each road type near the current location received from the information center 10. Is calculated based on the average vehicle speed. In the set static route, the “exit link” in the center area of the information center 10
The travel time Tc required to travel in the section C from to the destination is calculated based on the average vehicle speed for each road type near the destination received from the information center 10. Then, an expected arrival time Tm is calculated based on the current time Tn and each of the traveling times Ta to Tc. Here, the information on the link travel time of each link and the information on the average vehicle speed of each road type in the vicinity of the current location and the destination are calculated based on various types of traffic information, and thus accurately reflect the current traffic conditions. It will be.

Therefore, the maintenance is performed so that the information transmitted from the information center 10 (recommended route, link travel time of each link, information on the current vehicle speed and average vehicle speed for each road type near the destination) is always the latest information. If so, the prediction accuracy of the predicted arrival time Tm can be improved.

At the same time as updating the dynamic route, the electronic control unit 36 updates the link travel time of each link and information on the current vehicle speed and the average vehicle speed for each road type near the destination. Therefore, the navigation device 20 does not need to communicate with the information center 10 only to update the information (the link travel time of each link, the current vehicle speed, and the average vehicle speed for each road type near the destination). The operation load on the communication device 34 and the electronic control device 36 can be reduced.

The present invention is not limited to the above embodiment, but may be modified as follows. Even in such a case, the same operation and effect as the above embodiment can be obtained. [1] With respect to the information on the average vehicle speed for each of the road types near the present and near the destination, the road type is further finely divided, and the information on the average vehicle speed is set for each division. For example, an urban expressway may be added to the road types (expressways, toll roads, general roads, and other roads), and general roads may be classified into national roads, prefectural roads, city roads, and town roads. By doing so, the prediction accuracy of the estimated arrival time Tm can be further improved.

[2] In addition to the information on the average vehicle speed for each road type near the present and near the destination, information on the average vehicle speed for each of the major roads near the present and near the destination is set. Based on the vehicle speed information, each of the traveling times Ta,
Calculate Tc. For example, for a national road, information on the average vehicle speed is set for each road name (National Road 1, National Road 2, etc.). By doing so, the prediction accuracy of the estimated arrival time Tm can be further improved.

[3] The update of the information of the installation location of the automatic speed control device does not necessarily have to be performed at the time of updating the dynamic route, and may be performed by separately setting the update condition of the installation location. [4] In the above embodiment, the electronic control unit 3
6 calculates the sum of the link travel times of the respective links on the recommended route received from the information center 10 and calculates the travel time Tb.
At the information center 10.
b may be calculated, and the information center 10 may transmit the information of the traveling time Tb. In this case, the electronic control unit 36 of the navigation device 20 may use the information of the travel time Tb received via the communication device 34 as it is, and does not need to calculate the travel time Tb.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment embodying the present invention.

FIG. 2 is a flowchart illustrating a static route setting process according to the embodiment;

FIG. 3 is a schematic diagram schematically showing a data structure of information transmitted from an information center.

FIG. 4 is a flowchart illustrating a dynamic route setting process according to an embodiment.

FIG. 5 is a flowchart for explaining details of processing in S206 and S208 in FIG. 4;

FIG. 6 is an explanatory diagram for explaining the operation of the embodiment.

[Explanation of symbols]

10 information center 20 navigation device 2
2 ... Position detector 34 ... Communication device 36 ... Electronic control device

Continued on the front page F term (reference) 2F029 AA02 AB01 AB03 AB07 AB13 AC02 AC04 AC06 AC09 AC14 AC16 5H180 AA01 BB04 BB05 BB13 CC12 DD03 FF01 FF04 FF05 FF12 FF13 FF22 FF25 FF27 FF32 FF33 KK10

Claims (3)

[Claims] 1. A position detecting means for detecting a current position of a vehicle, a communication means for communicating via a wireless line between an information center for collecting various types of traffic information in a preset center area, and the position Static route calculating means for calculating a route from the current position of the vehicle detected by the detecting means to a preset destination; and a static route from the current position to the destination calculated by the static route calculating means. Search for a link that is at least a certain distance from the current location and that matches the link provided by the information center in the center area, sets the link obtained first as the entry link, and immediately before reaching the destination Entry / exit link setting means for setting the link as an exit link; position information of a current position of the vehicle detected by the position detection means; position information of a destination; The position information of the incoming link and the outgoing link set by the setting means is transmitted through the communication means, and the recommended route from the incoming link to the outgoing link in consideration of the current traffic condition transmitted from the information center Information, information on the travel time required for traveling on the recommended route, and information on the average vehicle speed at which the vehicle can travel near the current location and the destination via the communication means, and based on the respective information, A navigation device comprising: arrival time calculating means for calculating an estimated arrival time at a destination based on the calculated time required for traveling from the current position to the destination. 2. The navigation device according to claim 1, wherein the information on the average vehicle speed in the vicinity of the current location and the destination is set for each road type classified in advance. For each road type included in the static route from the current location to the approach link calculated by the route calculation means, the total travel distance of the road of the type was determined, and the total sum of the travel distances was received from the information center. By dividing by the average vehicle speed of the type of road near the current location and adding the divided value for each type of road, the time required to travel from the current location to the approach link is calculated. For each road type included in the static route from the calculated exit link to the destination, the total distance traveled for the type of road is calculated, and the total distance traveled is calculated. By dividing by the average vehicle speed of the type of road near the destination received from the information center and adding the division value for each type of road, it is possible to calculate the time required for traveling from the exit link to the destination. A featured navigation device. 3. The navigation device according to claim 1, wherein the information on the average vehicle speed in the vicinity of the current location and the destination is set for each road, and the arrival time calculation unit calculates the static route calculation. Means for each road on which the average vehicle speed included in the static route from the current location calculated by the means to the approach link is set, and the travel distance is received from the information center. By dividing by the average vehicle speed, the time required for traveling from the current location to the entrance link is calculated, and the average vehicle speed included in the static route from the exit link to the destination calculated by the static route calculation means is calculated. Is calculated for each road on which is set, and is divided by the average vehicle speed of the road near the destination received from the information center. Navigation apparatus and calculates the time required for traveling from click to the destination.