Guidance system

Abstract

To provide a technique for guiding a required time to a destination by segmentation.SOLUTION: A guidance system includes: a travel time identification section for identifying, when a route to a destination is searched, an in-route travel time from a start point to a point before the destination, a travel time just before the destination from the point before the destination to an entrance of the destination, and an in-parking-lot travel time from the entrance of the destination to a parking point; and a display processing section for displaying the in-route travel time, the travel time just before the destination, and the in-parking-lot travel time.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a guidance system. [Background technology]

[0002] Conventionally, there is known a guidance system that provides guidance on a planned route from a departure point to a destination and the required time. As such a system, Patent Document 1 discloses a technology that displays at least one of the required time that takes into account the waiting time to enter a parking lot at the destination and the required time that does not take into account the waiting time to enter, and notifies the driver whether the required time takes into account the waiting time to enter. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-186408 Summary of the Invention [Problem to be solved by the invention]

[0004] When a destination is set in a route search, a node near the destination is often set as the destination in the route search. If the area around the destination facility is congested, it may take additional time to enter the parking lot from the point set as the destination in the route search, or it may take time from entering the parking lot to completing parking. However, in the past, it was not possible to create a driving plan that takes these times into account, as it was not known whether the time required was before entering the parking lot or after entering the parking lot.

[0005] The present invention has been made in view of the above-mentioned problems, and aims to provide a technology that can provide guidance by dividing the required time to a destination into smaller parts. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the guidance system includes a travel time determination unit that, when a route search to a destination is performed, determines the en route travel time from the starting point to a point before the destination, the pre-destination travel time from the pre-destination point to the destination entrance, and the parking lot travel time from the destination entrance to the parking point, and a display processing unit that displays the en route travel time, the pre-destination travel time, and the parking lot travel time.

[0007] That is, the guidance system displays the travel time along the route, the travel time before the destination, and the travel time within the parking lot, allowing the user to understand not only the required time to reach the destination, but also whether it will take time to travel along the route along the route, time to enter the parking lot, or time within the parking lot. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a block diagram showing the configuration of the guidance system. [Figure 2] FIG. 10 is a diagram illustrating an example of a data configuration of warehousing time information. [Figure 3] 3A, 3B, and 3C are explanatory diagrams of the destination route specification process. [Figure 4] 10 is a flowchart showing a process of identifying an actual measured value of entry time; [Figure 5] FIG. 10 is an explanatory diagram of actual measured values ​​of entry time. [Figure 6] 10 is a flowchart showing a guidance process. [Figure 7] FIG. 10 is a diagram showing an example of a display of a travel route. [Figure 8] FIG. 10 is a diagram showing an example of an enlarged display. DETAILED DESCRIPTION OF THE INVENTION

[0009] Here, the embodiments of the present invention will be described in the following order. (1) Guidance system configuration: (2) Inventory information generation process: (3) Guidance processing: (4) Additional notes:

[0010] (1) Guidance system configuration: 1 is a block diagram showing the configuration of a guidance system 10. The guidance system 10 is a system mounted on a vehicle. As another example, the guidance system 10 may be a stationary or portable information processing device.

[0011] The guidance system 10 communicates with a data management server 20 via a network. The data management server 20 stores map information. The data management server 20 also periodically receives vehicle behavior information (probe information) from probe vehicles, generates traffic volume information and entry time information based on the probe information, and periodically updates this information. The probe information is information that associates information indicating the behavior of the probe vehicle, such as the vehicle position, traveling speed, steering angle, and yaw rate of the probe vehicle, with the date and time when the behavior was detected. The guidance system 10 obtains the map information, traffic volume information, and entry time information from the data management server 20 and stores this information in a recording medium 110. The map information, traffic volume information, and entry time information will be described later.

[0012] The guidance system 10 includes a control unit 100 having a CPU, ROM, RAM, etc., a recording medium 110, a GNSS receiving unit 121, a vehicle speed sensor 122, a gyro sensor 123, a user I / F unit 124, and a communication unit 125.

[0013] The recording medium 110 stores map information 111, traffic volume information 112, and entry time information 113. The map information 111 is used for identifying vehicle positions, route searches, and the like. The map information 111 includes node data indicating the positions of nodes corresponding to the endpoints of road sections, shape interpolation point data indicating the positions of shape interpolation points for identifying the shape of roads between nodes, link data indicating links connecting nodes, and the like. Here, nodes correspond to intersections, and links correspond to road sections from one intersection to the other. Furthermore, the distance and average travel time of each link are associated with the link.

[0014] The map information 111 further stores facility locations and polygon information in association with facility IDs that indicate the facilities. Polygon information is information that indicates a two-dimensional range within a facility. The map information 111 also stores parking lot location information that indicates the location of the parking lot and parking lot IDs that identify the parking lot, in association with the facility ID. If one facility has multiple parking lots, the map information 111 stores parking lot location information and parking lot IDs for each of the multiple parking lots at the facility, in association with the facility ID. The traffic volume information 112 is information that indicates the traffic volume of each link. In the traffic volume information 112, hourly traffic volume for each day of the week is associated with the link.

[0015] The entry time information 113 is information indicating the entry time for each parking lot included in the map information 111. In the entry time information 113, the entry time for each hour of the day for each day of the week is associated with the parking lot. FIG. 2 is a diagram showing an example of the data configuration of the entry time information 113. The entry time information 113 stores entry times in association with a facility ID, parking lot ID, entrance ID, day of the week, and time period. The entrance ID is information that identifies the entrance to the parking lot (parking lot entrance). If one parking lot has multiple parking lot entrances, multiple entrance IDs are associated with one parking lot ID. In this embodiment, days of the week are classified into two types: weekdays and holidays, but may also be classified into seven types: Monday to Sunday. Entry times will be described in detail later.

[0016] In this embodiment, traffic volume and entry times are managed as information for each hour by day of the week, but the method for managing this information is not limited to this embodiment. For example, this information may be managed by hour, regardless of the day of the week. Furthermore, this information may be managed in units of time periods longer than one hour, such as morning, afternoon, or night. Furthermore, one piece of traffic volume information may be associated with one link. Furthermore, one entry time may be associated with one parking lot entrance.

[0017] The GNSS receiver 121 shown in FIG. 1 is a device that receives signals from a Global Navigation Satellite System. The GNSS receiver 121 receives radio waves from navigation satellites and outputs a signal for calculating the vehicle position via an interface (not shown). The control unit 100 determines the vehicle position based on this signal. The vehicle speed sensor 122 outputs a signal corresponding to the rotational speed of wheels provided on the vehicle. The control unit 100 acquires this signal via an interface (not shown) and determines the vehicle speed based on this signal. The gyro sensor 123 detects angular acceleration of the vehicle turning in a horizontal plane and outputs a signal corresponding to the orientation of the vehicle. The control unit 100 acquires this signal and determines the traveling direction of the vehicle based on this signal. The vehicle speed sensor 122, gyro sensor 123, etc. are used to determine the traveling trajectory of the vehicle. In this embodiment, the control unit 100 determines the vehicle position of the on-board vehicle while it is traveling based on the departure point and traveling trajectory of the on-board vehicle, and corrects the vehicle position determined based on the departure point and traveling trajectory based on the output signal of the GNSS receiving unit 121.

[0018] The user I / F unit 124 is an interface unit for inputting user instructions and providing various information to the user, and is equipped with a touch panel display, switches, a speaker, etc. (not shown). That is, the user I / F unit 124 is equipped with a display unit for displaying information and an input unit for inputting user instructions. The communication unit 125 is a device for wireless communication with external devices, and the control unit 100 can communicate with the data management server 20 via the communication unit 125.

[0019] The control unit 100 can execute various programs stored in the recording medium 110 or the ROM. The control unit 100 of this embodiment can execute a guidance program 101 as one of these programs. The control unit 100 processes the guidance program 101 to display a driving route obtained by a route search on the display unit of the user I / F unit 124. When the control unit 100 executes the guidance program 101, the control unit 100 functions as a reception unit 102, a route search unit 103, a driving time determination unit 104, and a display processing unit 105. Note that, hereinafter, processes described as being executed by the reception unit 102, the route search unit 103, the driving time determination unit 104, and the display processing unit 105 are actually processes executed by the control unit 100.

[0020] The reception unit 102 receives instructions from the user via the input unit of the user I / F unit 124. The route search unit 103 searches for a driving route from a point set as a departure point to a point set as a destination point. The driving route obtained by the route search is an arrangement of nodes connecting the departure point to the destination point. In this embodiment, a case will be described in which a facility with a parking lot is set as the destination.

[0021] The driving time identification unit 104 identifies the driving time to the destination. The driving time to the destination includes en route driving time, driving time before the destination, and driving time in the parking lot, and the driving time identification unit 104 identifies each of these times. In other words, the driving time to the destination includes the time from departure to completion of parking in the destination parking lot. The en route driving time is the time spent driving along the en route route, the driving time before the destination is the time spent driving along the route before the destination, and the driving time in the parking lot is the time spent from passing the parking lot entrance to parking. The en route route is the route from the departure point to a point before the destination. The route before the destination is the route from the point before the destination to the parking lot entrance of the destination. The driving time identification unit 104 identifies the point before the destination through a route before the destination identification process, and identifies the en route driving time and the driving time before the destination.

[0022] The process of identifying a route before the destination will be described with reference to Figures 3A, 3B, and 3C. The process of identifying a point before the destination includes a first process and a second process. The first process calculates the proportion of traffic volume on each of multiple links leading to the parking lot entrance and identifies routes that are likely to lead to the parking lot. The second process identifies, from among the routes identified in the first process, routes with a congestion level equal to or greater than a threshold as routes before the destination.

[0023] First, the first process will be described. As shown in FIG. 3A, assume that there are two links, L2 and L3, connected to link L1 leading to the destination entrance (G1). In this case, the travel time identification unit 104 first identifies the ratio of traffic volume on each of links L2 and L3, and selects a route where the ratio is equal to or greater than a threshold. For example, assume that the threshold is 70% and the ratio of traffic volume on link L2 to that on link L3 is 9:1. In this case, the travel time identification unit 104 selects only routes including link L2 as candidate routes before the destination. Next, as shown in FIG. 3B, the travel time identification unit 104 identifies the ratio of traffic volume on the route including links L4, L2, and L1 and the route including links L5, L2, and L1, including links L4 and L5 connected to link L2. Assume that the ratio of traffic volume on the route via link L4 to that via link L5 is 9:1. In this case, the travel time identification unit 104 selects only the route via link L4 as a candidate route before the destination.

[0024] Next, as shown in FIG. 3C, the travel time identification unit 104 identifies the proportion of traffic volume on routes including each of the three links (link L6, link L7, and link L8) connected to link L4, and selects routes with a proportion equal to or greater than a threshold as candidate routes before the destination. The travel time identification unit 104 identifies one or more routes by repeating the same process up to a predetermined distance from the destination. In this way, one or more routes are identified by the first process. Hereinafter, the route obtained by the first process will be referred to as a first route candidate.

[0025] Next, the travel time identification unit 104 performs a second process. Specifically, the travel time identification unit 104 identifies a route within the first route candidate that has a traffic volume (congestion level) equal to or greater than a certain level as a second route candidate. For example, suppose that a route including links L6, L4, L2, and L1 is identified as the first route candidate. Meanwhile, suppose that the congestion level of link L6 is equal to or less than a threshold, and the congestion levels of links L4, L2, and L1 are equal to or greater than a threshold. In this case, the route including links L4, L2, and L1 is identified as the second route candidate. That is, a route from the first route candidate excluding link L6 is identified as the second route candidate. Here, the end of link L4 that is not connected to link L2 corresponds to the point before the destination. In this way, the point before the destination is determined according to the traffic volume on the travel route. Because the point before the destination is determined according to the traffic volume, a route that reflects the traffic volume resulting from entering the parking lot at the destination is identified as the route before the destination.

[0026] The congestion degree is determined based on the route distance and the average travel time. In this embodiment, the congestion degree is determined by dividing the average travel time by the route distance. Note that the method for determining the congestion degree is not limited to the embodiment. As another example, congestion information may be acquired from an external device, and the congestion degree may be determined based on the congestion information.

[0027] The travel time identification unit 104 further identifies a second route candidate that has the shortest required time as a route before the destination. For example, assume that three routes are identified as second route candidates: a route including link L4, link L2, and link L1; a route including link L4, link L2, and link L1; and a route including link L5, link L2, and link L1. In this case, if the travel route obtained by the route search includes the route including link L4, link L2, and link L1, the route including link L4, link L2, and link L1 is identified as a route before the destination. Then, the travel time identification unit 104 identifies the travel time before the destination from the average travel time on the route before the destination.

[0028] Furthermore, the travel time determination unit 104 determines, from among the travel routes obtained by the route search, routes other than the route before the destination as intermediate routes. Then, the travel time determination unit 104 determines the intermediate travel time from the average travel time on the intermediate routes.

[0029] Furthermore, the driving time determination unit 104 determines the driving time within the parking lot by referring to the entry time information 113. Specifically, the driving time determination unit 104 determines the entry time indicated in the entry time information 113 as the driving time within the parking lot.

[0030] The display processing unit 105 shown in Fig. 1 displays various information on the display unit. For example, the display processing unit 105 displays a driving route superimposed on a map. At this time, the display processing unit 105 displays the route en route and the route before the destination in different colors. The display processing unit 105 also displays the driving time en route, the driving time before the destination, and the driving time in the parking lot.

[0031] As described above, the guidance system 10 of this embodiment displays the driving time along the route, the driving time before the destination, and the driving time within the parking lot. This allows the user to understand not only the time required to reach the destination, but also whether it will take time to drive along the route along the route, how long it will take to enter the parking lot, and how long it will take to stay in the parking lot. Therefore, if it takes a long time to enter the parking lot, the user may consider changing to a different parking lot.

[0032] (2) Inventory information generation process: Next, we will explain the entry time generation process performed by the data management server 20. When a probe vehicle parks in a parking lot, the data management server 20 identifies the actual entry time. Then, the data management server 20 processes multiple actual entry time measurements for the same parking lot obtained from multiple probe vehicles, thereby identifying the entry time to be recorded as entry information.

[0033] Fig. 4 is a flowchart showing the process of identifying the actual measured value of entry time. Fig. 5 is an explanatory diagram of the process of identifying the actual measured value of entry time. The entry time is the time from the time of entering the parking lot to the time of completion of parking. Suppose a probe vehicle stops at the destination parking lot P shown in Fig. 5.

[0034] The data management server 20 periodically receives vehicle information (CAN information: Controller Area Network information) from this probe vehicle. Vehicle information is not transmitted while the engine of the probe vehicle is stopped. Therefore, the data management server 20 determines that parking has occurred when a predetermined threshold, such as 30 minutes, continues without receiving vehicle information (step S100). Next, the data management server 20 determines whether the vehicle parked position of the probe vehicle is within a parking lot of a predetermined facility (step S102). Specifically, the data management server 20 determines that the probe vehicle has been parked in a parking lot when the vehicle position of the probe vehicle indicates coordinates within a polygon indicating the parking lot of the facility.

[0035] If the vehicle is not parked in a parking lot (N in step S102), the data management server 20 ends the process. If the vehicle is parked in a parking lot (Y in step S102), the data management server 20 identifies the entry time based on the driving history of the probe vehicle (step S104). Specifically, the data management server 20 traces back the driving history to identify the time when the probe vehicle entered a polygon representing the parking lot and the time when the vehicle speed became zero within the polygon. Note that the condition is that the engine is stopped after the vehicle speed becomes zero. The data management server 20 then identifies the time from the time of entry to the time when the vehicle speed becomes zero as the actual entry time value, and records this in a memory unit (not shown).

[0036] For example, suppose it is determined that the vehicle was parked at point x2 in parking lot P shown in Figure 5. In this case, the driving history is traced back to identify entry point x1 into parking lot P. In this case, the time from passing entry point x1 until the vehicle speed reaches zero at x2 is identified as the actual entry time.

[0037] When the data management server 20 obtains multiple actual entry time values ​​for one parking lot, it creates a histogram of the actual entry time values. The data management server 20 then converts the frequency of the histogram into occurrence probability and fits it to a gamma distribution. The data management server 20 then determines a value such as +2σ as the entry time. Note that the data management server 20 may determine the entry time by performing statistical processing on the actual entry time values, and the specific processing for this purpose is not limited to that described in the embodiment. The data management server 20 generates entry time information 113 by performing this processing for each parking lot, each day of the week, and each hour of the day.

[0038] (3) Guidance processing: Next, the guidance process executed by the guidance system 10 will be described with reference to Fig. 6. The guidance process is executed when a route search is performed by the route search unit 103 of the guidance system 10. In the route search, if there are multiple parking lot entrances at the destination, each parking lot entrance is set as the destination entrance, and a driving route to each destination entrance is searched for.

[0039] In the guidance process, first, the travel time identification unit 104 of the guidance system 10 refers to the map information 111 and the entry time information 113, and checks whether the destination related to the route search is included in the entry time information 113 (step S200). If the facility ID indicating the destination is included in the entry time information 113, it is determined that the destination is included in the entry time information 113.

[0040] If the destination is not included in the entry time information 113 (N in step S200), the travel time determination unit 104 calculates the total travel time of the travel route to the destination (step S202). The average travel time of each link is referenced to calculate the total travel time. Next, the display processing unit 105 displays the travel route and the total travel time on the display unit (step S204).

[0041] On the other hand, if the destination is included in the entry time information 113 (Y in step S202), the travel time identification unit 104 acquires the entry time information 113 corresponding to the destination (step S206). Next, the travel time identification unit 104 performs the following process for each parking lot entrance (entrance / exit) that exists at the destination. Note that, hereinafter, the entrance to be processed is referred to as the target entrance.

[0042] First, the driving time identification unit 104 refers to the entry time information 113 and identifies the driving time within the parking lot at the target entrance (step S208). Specifically, the driving time identification unit 104 identifies the estimated arrival time for the driving route obtained by the route search based on the average travel time of each link and the estimated departure time. Then, the driving time identification unit 104 identifies the entry time associated with the parking lot ID and estimated arrival time of the target entrance in the entry time information 113 as the driving time within the parking lot.

[0043] Next, the travel time identification unit 104 identifies the travel time before the destination (step S210). Specifically, the travel time identification unit 104 identifies a point before the destination, a route before the destination, and a travel time before the destination by the above-described route before the destination identification process.

[0044] Next, the travel time determination unit 104 determines the on-road travel time (step S212). Specifically, the travel time determination unit 104 determines the on-road route by the above-described route before destination determination process, and determines the on-road route travel time.

[0045] Next, the driving time identification unit 104 records the en route route, the route before the destination, the en route driving time, the driving time before the destination, and the driving time inside the parking lot in a storage unit such as the recording medium 110 in association with the entrance ID of the target entrance (step S214). The driving time identification unit 104 executes the processes of steps S208 to S214 for all parking lot entrances (destination entrances) to the destination facility, thereby recording the en route route, the route before the destination, the en route driving time, the driving time before the destination, and the driving time inside the parking lot for each parking lot entrance.

[0046] Next, the driving time determination unit 104 calculates the total of three driving times, namely, the driving time on the way, the driving time before the destination, and the driving time inside the parking lot, for each parking lot entrance (step S216). Next, the driving time determination unit 104 selects the parking lot entrance that will result in the shortest total time (step S218). Next, the display processing unit 105 displays the driving route to the selected parking lot entrance in different colors (step S220). FIG. 7 is a diagram showing an example of a driving route display. In FIG. 7, the route shown by the solid line is the route on the way, and the route shown by the dotted line is the route before the destination. The solid and dotted lines indicate lines that are displayed in different colors. Furthermore, as shown in FIG. 7, the display unit displays the driving time on the way, the driving time before the destination, and the driving time inside the parking lot.

[0047] Next, the control unit 100 checks whether the receiving unit 102 has received an enlarged display instruction in response to a user operation (step S222). If an enlarged display instruction has not been received (N in step S222), the control unit 100 proceeds to step S226. If an enlarged display instruction has been received (Y in step S222), the display processing unit 105 performs an enlarged display (step S224). FIG. 8 is a diagram showing an example of an enlarged display. In this way, the vicinity of the destination is enlarged. This allows the user to check the details of the route before the destination.

[0048] Next, the control unit 100 checks whether the reception unit 102 has received an entrance change instruction in response to a user operation (step S226). If there are multiple parking lot entrances for one destination, icons representing the multiple parking lot entrances are displayed on the display unit. For example, in the example of FIGS. 7 and 8, two icons G1 and G2 are displayed as parking lot entrances. In FIGS. 7 and 8, the driving route to the parking lot entrance G1 is displayed. In this state, when the icon G2 is selected, the reception unit 102 receives an entrance change instruction.

[0049] If the entrance change instruction has not been received (N in step S226), the control unit 100 proceeds to step S230. If the entrance change instruction has been received (Y in step S226), the display processing unit 105 displays the driving route to the parking lot entrance after the change related to the entrance change instruction (step S228). Note that in this case as well, the display processing unit 105 displays the route en route and the route before the destination in different colors for the driving route to the parking lot entrance after the change.

[0050] By repeating the process of steps S208 to S214, the en route route, route before the destination, en route driving time, driving time before the destination, and driving time inside the parking lot are recorded in the storage unit for all parking lot entrances. Therefore, when displaying the changed driving route to the parking lot entrance in color in step S228, the display processing unit 105 refers to the information recorded in the storage unit. Then, the display processing unit 105 displays the en route driving time, driving time before the destination, and driving time inside the parking lot for the changed driving route to the parking lot entrance. In this way, if there are multiple parking lot entrances (destination entrances), the en route driving time, driving time before the destination, and driving time inside the parking lot for each parking lot entrance are displayed.

[0051] As another example, in step S228, the display processing unit 105 may perform the processes from step S208 to step S214 with the changed parking lot entrance as the target entrance. In this case, the display processing unit 105 may display the driving route based on the identified route along the way, route before the destination, driving time along the way, driving time before the destination, and driving time within the parking lot.

[0052] Next, the control unit 100 checks whether the receiving unit 102 has received an end instruction in response to a user operation. If the end instruction has not been received (N in step S230), the control unit 100 proceeds to step S222. If the end instruction has been received (Y in step S230), the control unit 100 ends the process.

[0053] As described above, the guidance system 10 of this embodiment can display the driving time along the road, the driving time before the destination, and the driving time within the parking lot. Furthermore, the route along the road and the route before the destination can be displayed in different colors. This allows the user to understand not only the time required to reach the destination, but also whether it will take time to drive the route along the road, to enter the parking lot, or to spend time within the parking lot. Therefore, for example, if it takes a long time to enter the parking lot, the user can consider changing to a different parking lot. (4) Additional notes: The above embodiment is one example for carrying out the present invention, and various other embodiments can be adopted. For example, the guidance system 10 constituting the above embodiment can be configured to be composed of multiple systems. In this case, some of the functions of the guidance system 10 can be realized by the data management server 20 or another device. For example, a configuration can be adopted in which processing related to route search is executed by a device external to the guidance system 10.

[0054] As described above, in this embodiment, the traffic volume information 112 and the entry time information 113 are recorded in the recording medium 110 of the guidance system 10. However, as another example, these pieces of information may be acquired from the data management server 20 at the timing when they are used in the guidance system 10.

[0055] In addition, in this embodiment, the display processing unit 105 displays the intermediate route and the route before the destination in different colors, but the specific display format is not limited to the embodiment as long as these routes are displayed in a distinguishable manner. As another example, the display processing unit 105 may display the intermediate route and the route before the destination in different line types, such as the solid line and dotted line shown in Figures 7 and 8.

[0056] Furthermore, the techniques of the present invention can also be applied as programs or methods. The above-described systems, programs, and methods may be realized as standalone devices or may be realized using components shared with various parts of a vehicle, and thus include various aspects. They can also be modified as appropriate, such as being partly software and partly hardware. Furthermore, the invention can also be realized as a recording medium for a program that controls the system. Of course, the recording medium for the program may be a magnetic recording medium or a semiconductor memory, and any recording medium developed in the future can be considered in the same way. [Explanation of symbols]

[0057] 10...guidance system, 20...data management server, 100...control unit, 101...guidance program, 102...reception unit, 103...route search unit, 104...travel time determination unit, 105...display processing unit, 110...recording medium, 111...map information, 112...traffic volume information, 113...entry time information, 121...GNSS receiving unit, 122...vehicle speed sensor, 123...gyro sensor, 124...user I / F unit, 125...communication unit

Claims

1. a travel time determination unit that, when a route search to a destination is performed, determines a travel time on the way from a starting point to a point before the destination, a travel time before the destination from the point before the destination to an entrance of the destination, and a travel time in a parking lot from the entrance of the destination to a parking point; a display processing unit that displays the on-road travel time, the travel time before the destination, and the travel time within the parking lot; A guidance system comprising:

2. The guidance system according to claim 1 , wherein the display processing unit displays the via-travel route in a distinguishable manner for each of the en-route travel time and the pre-destination travel time.

3. The guidance system according to claim 1 , wherein the pre-destination point is determined according to a traffic volume on a travel route leading to the destination.

4. 2. The guidance system according to claim 1, wherein, when there are a plurality of destination entrances to the destination, the display processing unit displays the en-route driving time, the driving time before the destination, and the driving time within the parking lot for each destination entrance.

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