WO2014118857A1

WO2014118857A1 - Traffic information providing system

Info

Publication number: WO2014118857A1
Application number: PCT/JP2013/007382
Authority: WO
Inventors: 洋介石黒
Original assignee: 株式会社デンソー
Priority date: 2013-02-04
Filing date: 2013-12-16
Publication date: 2014-08-07
Also published as: JP2014149784A; JP6020217B2; CN104969031A; CN104969031B

Abstract

This information providing system (1) is provided with a storage unit (13) which stores difference data, a first acquisition unit (S10, S11), a difference calculation unit (S20, S22, S21, S23), a correction unit (S12, S33) and a presenting unit (S32, S35). The difference data includes difference data groups each corresponding to a road segments including multiple difference data records. Each difference data record indicates difference information about the difference between a predicted travel time needed to travel a road segment and a measured travel time, which is how long it has taken a vehicle to actually travel the road segment. The first acquisition unit acquires the predicted travel time needed for a vehicle to travel the target road segment at the current time. The difference calculation unit calculates a difference statistic by performing prescribed statistical processing on the difference data records corresponding to the target road segment. The correction unit calculates a difference-adjusted needed time by adjusting, on the basis of the difference statistic, the predicted travel time acquired by the first acquisition unit.

Description

Traffic information provision system

Cross-reference of related applications

This disclosure is based on Japanese Application No. 2013-019552 filed on Feb. 4, 2013, the contents of which are incorporated herein.

This disclosure relates to a traffic information providing system that provides traffic information related to the time required for traveling on a road.

The prior art described in Patent Document 1 is known for predicting traffic conditions. In this prior art, an information reliability indicating how much the driver trusts the provided traffic information and a behavior change rate indicating how much the driver's behavior changes according to the information reliability are defined. Is done. And the method of correcting the prediction of a traffic condition is disclosed by using the action change rate by the information reliability of a driver.

When it is assumed that the estimated travel time is corrected using the information reliability and behavior change rate as in the above prior art in order to provide traffic information related to the travel time of the road, the following problems There is. The determination of whether the driver trusts the provided information or whether the driver changes the behavior based on the provided information depends greatly on the psychological state of the driver at the time of driving. Therefore, depending on the psychological state at the time of driving, the information reliability and behavior change rate used for correcting the traffic information may not always match the judgment of the driver, and the prediction may be uncertain.

JP 2007-164262 A

The present disclosure has been made in view of the above points, and an object of the present disclosure is to provide a traffic information providing system that provides traffic information related to travel time on a road in an aspect that considers driving characteristics based on a driver's travel experience. Is to provide.

The traffic information providing system according to an aspect of the present disclosure includes a storage unit, a first acquisition unit, a difference calculation unit, a correction unit, and a presentation unit. The storage unit accumulates difference data regarding the driving characteristics of the driver. The difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections. Each difference data group includes a plurality of difference data records respectively corresponding to different times. Each difference data record includes information regarding the difference between the estimated travel time required for the vehicle to travel the corresponding road section and the actual travel time required for the vehicle to travel the corresponding road section in the past. Show. The predicted travel time is acquired based on traffic information provided from an external device. The first acquisition unit acquires a predicted travel time required for the vehicle to travel on the target road section that is one of the plurality of road sections based on traffic information provided from an external device at the present time. The difference calculation unit performs a predetermined statistical process on a plurality of difference data records included in the difference data group corresponding to the target road section accumulated in the storage unit, thereby calculating the difference statistic of the target road section. calculate. The correction unit corrects the predicted travel time acquired by the first acquisition unit based on the difference statistic calculated by the difference calculation unit, and calculates the required time with difference. The presenting unit presents presentation information regarding the required time with difference calculated by the correcting unit to the driver.

According to the above system, it is possible to provide traffic information relating to the required travel time of the road in a manner that considers driving characteristics based on the driver's traffic experience.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
FIG. 1 is a block diagram illustrating a configuration of a traffic information providing system according to an embodiment of the present disclosure. FIG. 2 is an explanatory diagram showing the structure of difference data. FIG. 3 is a flowchart showing a procedure of processing executed by the traffic information providing system according to the first embodiment of the present disclosure. FIG. 4 is a flowchart illustrating a procedure of processing executed by the traffic information providing system according to the second embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, this indication is not limited to the following embodiment, It is possible to implement in various aspects.
(First embodiment)
As shown in FIG. 1, the traffic information providing system 1 is used in a traffic information distribution device (TRFC INFO DISTRIBUTE) 10 installed in a center that distributes traffic information to vehicles in a wide area and a vehicle driven by a driver. And an information providing device (INFO PROVIDE) 20. In FIG. 1, only one information providing device 20 is illustrated for the sake of brevity, but a plurality of information providing devices 20 may be used in each vehicle.

The traffic information distribution device 10 is constituted by an information processing device having a server function. The traffic information distribution device 10 includes a communication unit (COMM) 11, an information storage unit (STORAGE) 12, a difference database (DIFF DB) 13, a difference amount calculation unit (DIFF CALC) 14, and a control unit (CONTROL) 15.

The communication unit 11 communicates with various external devices such as the information providing device 20, the traffic information center (TRFC INFO CENTER) 30, and the communication device (COMM DEVICE) 40 via a communication network such as a wireless communication network or the Internet. It is a communication apparatus for performing communication. The communication unit 11 transmits and receives various types of information for providing the driver with information related to the required travel time on the road with the information providing device 20.

Further, the communication unit 11 is, for example, road information transmitted from a traffic information center 30 of VICS (Vehicle Information Communication System, registered trademark) or various communication devices 40, or information on a probe transmitted from a probe vehicle such as a taxi. Receive the latest traffic information. The traffic information received from the outside via the communication unit 11 includes, for example, travel time, traffic jam, traffic obstacle, traffic regulation, weather, wind direction, road surface condition, data useful for route search in traffic jam prediction information, and the like.

The information storage unit 12 stores the traffic information received from the external traffic information center 30 or the communication device 40 via the communication unit 11. In addition, the information storage unit 12 calculates a travel time required for a certain road section acquired based on the accumulated traffic information, and an actual travel time measured by a vehicle actually passing through the road section. Calculate the difference. The travel time required for a road section is the estimated travel time required to travel from the start point to the end point of the road section acquired based on the accumulated traffic information. Is the time taken to actually move from the start point to the end point of the road section. And it accumulate | stores in the difference database 13 as difference data regarding the driving characteristic of the drive corresponding to the driver of the vehicle which concerns on measurement of the measurement travel time, and the said road section.

The difference database 13 is a storage device that accumulates a difference data group corresponding to each vehicle driver. The detailed contents of the difference data stored in the difference database 13 will be described with reference to FIG. As shown in FIG. 2, the difference data is composed of information related to the difference in required travel time for each road section associated with identification information (driver ID) unique to the driver. In the difference database 13, difference data relating to a plurality of drivers is classified and stored for each driver. Specifically, the difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections, and each difference data group includes a plurality of difference data records respectively corresponding to different times. Each difference data record is obtained based on the traffic information provided from outside in the past, and the estimated travel time required for the vehicle to move along a road section, and the vehicle actually moves in the past in the past. The information regarding the difference with the measurement travel time which it took to do is shown.

The information for each road section includes a difference time, a time stamp, and a congestion degree information in association with information indicating road section identification information (road ID) and road type (highway, general road, etc.). Data records are accumulated.

The difference time is the time difference between the actual travel time measured when the vehicle driven by the driver passes through the road section and the travel time obtained based on the traffic information provided from the outside at that time. It is information to show. The time stamp is information indicating the date and time when the actual travel time was measured. The degree of congestion is information indicating the degree of congestion (for example, congestion, congestion, smoothness, etc.) of the road section indicated by traffic information provided from the outside at that time. The difference data record is accumulated in the difference database 13 as difference data related to the driver of the vehicle related to the measurement of the actual travel time every time the actual travel time is notified from the information providing device 20.

Returning to the block diagram of FIG. The difference amount calculation unit 14 statistically processes the difference data group of the target road section related to the target driver stored in the difference database 13, and calculates a difference statistic indicating the driving characteristics of the driver in the road section. To do. This difference statistic is an index that indicates how much time difference is expected to occur from the travel time based on external traffic information when the driver passes a certain road section. Alternatively, it is represented by a physical quantity such as a time difference or a speed difference per unit distance.

The control unit 15 has a function of executing various information processing related to the distribution of traffic information. The control unit 15 receives data such as the current location and destination of the vehicle, a planned route to the destination, and driver identification information from the information providing device 20 via the communication unit 11. Based on the traffic information received from the traffic information center 30, various communication devices 40, etc., the control unit 15 uses the roads on the surrounding road and the planned route based on the data received from the information providing device 20 as target road segments. The travel time of the target road section is acquired. Then, the travel time with difference, which is corrected by taking into account the difference statistic calculated by the difference amount calculation unit 14 with respect to the acquired travel time, is transmitted to the information providing apparatus 20 as the transmission source.

The information providing apparatus 20 is embodied by, for example, a navigation system mounted on a vehicle or a portable information communication terminal possessed by a vehicle driver. The information providing apparatus 20 includes a communication unit (COMM) 21, a map database (MAP DB) 22, a required time calculation unit (TIME CALC) 23, a vehicle position specifying unit (POSI SPECIFY) 24, a display unit (DISPLAY) 25, and an operation. Unit (OPERATE) 26, audio output unit (AUDIO) 27, and control unit (CONTROL) 28.

The communication unit 21 transmits / receives various types of information related to the travel time of the road section on the current location, the vicinity of the destination, and the planned route to / from the traffic information distribution device 10 via a communication network such as a wireless communication network or the Internet. . As the communication unit 21, various communication methods such as a mobile phone, a DSRC (Dedicated Short Range Communication), and a wireless LAN can be employed.

The map database 22 is a database related to map data for navigation stored in a large-capacity information storage medium such as an optical disk, a hard disk drive, or a nonvolatile semiconductor memory. Examples of the map data include map drawing data for map display, road data necessary for processing such as map matching, route search, route guidance, intersection data, place name data for displaying place names, and the like. Note that, instead of the information providing apparatus 20 including the map database 22, the information providing apparatus 20 may acquire map data necessary for route guidance from the traffic information distribution apparatus 10 via the communication unit 21. Good.

The required time calculation unit 23 measures the required travel time when the host vehicle passes through a certain road section based on the current location specified by the host vehicle position specifying unit 24. The required travel time measured by the required time calculation unit 23 is transmitted to the traffic information distribution device 10 via the communication unit 21.

The own vehicle position specifying unit 24 specifies the current location of the own vehicle using various sensors such as a GPS receiver, a speed sensor, and a gyroscope. In addition, the map matching using the map data recorded in the map database 22 identifies where the host vehicle is on the road.

The display unit 25 is a display device that displays various image information based on the video signal input from the control unit 28, and includes, for example, a display installed near the driver's seat of the vehicle. The display unit 25 includes, for example, a map image around the current location, a mark indicating the current location, a planned route from the current location to the destination, an estimated arrival time at the destination calculated based on the required time with difference, and a road Image information such as the congestion status is displayed.

The operation unit 26 is an input device for giving a command or the like related to an operation received from a user to the control unit 28, and is formed on a mechanical switch disposed around the display unit 25 or on the display surface of the display unit 25. Touch panel. The audio output unit 27 is an output device that outputs audio information based on the audio signal from the control unit 28. Thereby, various information can be presented to the user both by the display by the display unit 25 and by the audio output by the audio output unit 27.

The control unit 28 has a function of performing various information processing related to navigation. Examples of navigation-related processing executed by the control unit 28 include map display processing and route guidance processing. In the map display process, a map image is generated based on the map data around the current location read from the map database 22 and displayed on the display unit 25. In addition, the control unit 29 displays a mark indicating the current location of the host vehicle detected by the host vehicle position specifying unit 24 on the map image displayed on the display unit 25 and displays the current location as the host vehicle moves. Move the mark or scroll the map image.

In the route guidance process, when the user operates the operation unit 26 to set a destination, the control unit 28 reads the optimal route from the departure point to the destination from the map database 22 with the current location of the host vehicle as the departure point. Search using road data. Then, the route obtained by the route search is set as a planned route, and the planned route is superimposed on the map image and displayed on the display unit 25. And the control part 29 outputs guidance information, such as advancing direction, or a voice in front of specific guidance points, such as a branch point on a route, with the movement of the own vehicle, and the own vehicle is scheduled to the destination. Guide you to travel along the route.

In addition, the control unit 28 transmits data such as the current location and destination of the vehicle, a planned route to the destination, and driver identification information to the traffic information distribution device 10 via the communication unit 21. And the control part 28 receives the information regarding the required time with a difference corresponding to the road area on the planned route calculated in the traffic information distribution apparatus 10. The control unit 28 causes the display unit 25 to display the required time with difference, the estimated arrival time at the destination and the degree of congestion of the road calculated by reflecting the required time with difference on the map image. As a result, the driver can know the required time and the estimated arrival time reflecting the driving characteristics of the driver.

A series of processing executed in the present embodiment by the traffic information distribution device 10 and the information providing device 20 in the traffic information providing system 1 configured as described above will be described with reference to the flowchart of FIG. The processes executed by the traffic information distribution apparatus 10 and the information providing apparatus 20 are classified into a required time information providing process and a difference data storing process.

Here, the flowchart described in this application or the processing of the flowchart is configured by a plurality of parts (or referred to as steps), and each part is expressed as S10, for example. Furthermore, each part can be divided into a plurality of sub-parts, while the plurality of parts can be combined into one part. Furthermore, each part configured in this manner can be referred to as a device, a module, and a means.

First, the required time information provision process will be described. In the traffic information distribution device 10, the control unit 15 acquires the travel time required for the target road section based on the latest traffic information provided from the external device stored in the information storage unit 12 (S10). The target road section referred to here is a road section on the current route of the vehicle and around the destination or a road section on the planned route to the destination based on data received from the information providing device 20 via the communication unit 11. is there.

Further, the difference amount calculation unit 14 selects a difference data group corresponding to the target road section related to the target driver based on the data received from the information providing device 20 from the difference data group stored in the difference database 13. A plurality of difference data records included in the extracted difference data group are statistically processed (S20). Here, for example, an average value, a median value, a mode value, or the like of difference times in a plurality of difference data records is calculated. And the difference statistic in the object road area regarding the object driver is computed from the result of statistical processing (S22). The difference statistic is represented by a physical quantity such as a time difference in the entire target road section, a time difference per unit distance, or a speed difference.

In addition, as a calculation method of the difference statistic by the statistical processing of the difference data record in S20 and S22, the devices shown in the following (1) to (4) may be applied.

(1) In the road section where the driver's traffic history is small or the vehicle travels for the first time, there is a possibility that the driving characteristics of the driver cannot be accurately grasped because the number of data used for statistical processing of the difference data record is insufficient. Therefore, if the number of difference data records corresponding to the target road section is less than the specified number, other roads to which the same road type as the road type of the target road section is assigned in the difference data group related to the driver. You may make it perform a statistical process using the difference data group of an area. For example, based on the difference data group accumulated for each road type, a difference statistic obtained by converting the difference time into a speed difference is calculated. Then, by adding the time difference converted from the differential speed based on the traffic history in other road sections of the same road type to the travel time of the target road section, the driver's driving in an environment similar to the target road section The required time with difference reflecting the characteristics can be calculated.

(2) You may make it perform a statistical process according to the congestion degree attached | subjected to the difference data record. Specifically, if the difference data record corresponding to the target road section is less than the prescribed number, the current congestion of the target road section ascertained from external traffic information, etc., from the difference data group related to the driver A difference data group corresponding to the same congestion degree as the degree is extracted and used to calculate the difference statistic. For example, a difference statistic obtained by converting a difference time into a speed difference is calculated based on a difference data group accumulated for each degree of congestion. Then, by adding the time difference converted from the differential speed based on the traffic history in the road section of the same congestion degree to the travel time of the target road section, the driver's driving in an environment similar to the current congestion degree The required time with difference reflecting the characteristics can be calculated. The difference statistic may be calculated by combining the above methods (1) and (2).

(3) Regardless of road classification, the difference statistic may be calculated using all the difference data groups accumulated for the target driver.

(4) The difference statistics for the target driver may be substituted by calculating the difference statistics using the difference data record for other drivers whose driving characteristics are similar to those of the target driver. For example, if the difference data record of the target road section related to the target driver is less than the prescribed number, the difference data record of the target road section related to another driver is similar to the target driver using the difference data record. Calculate difference statistics. An example of a method for identifying another driver having similar driving characteristics is to identify a partner whose summary statistics of the difference data record for each driver approximate that of the target driver.

Based on the current travel time of the target road section acquired in S10 and the difference statistic calculated in the difference amount calculation unit 14 in S22, the control unit 15 calculates the required time with difference for the target road section. Calculate (S12). For example, when the difference statistic is calculated as a time difference in the entire target road section, the required time with difference is calculated by adding or subtracting the time difference to the current required travel time based on external traffic information. Alternatively, if the difference statistic is calculated as a time difference or speed difference per unit distance, it is converted into a time difference according to the distance of the target road section, and is added to or subtracted from the current travel time based on external traffic information. Thus, the required time with difference is calculated. The control unit 15 transmits the required time with difference information including the calculated required time with difference to the information providing apparatus 20 belonging to the target driver via the communication unit 11 (S14).

On the other hand, the control unit 28 of the information providing device 20 receives the difference required time information transmitted from the traffic information distribution device 10 via the communication unit 21 (S30). Then, the control unit 28 presents information to the target driver based on the received difference-added time information (S32). For example, the control unit 28 calculates a predicted arrival time at the destination using the required time with difference regarding the surrounding road or the road section on the planned route, and displays it on the navigation screen in the display unit 25. In addition, the display unit 25 displays the degree of congestion calculated from the difference between the required travel time estimated from the normal travel speed at the time of non-congestion and the required time with difference on the road on the map image. Also good.

Next, the difference data storage process will be described. Every time the control unit 28 passes through a predetermined road section, the control unit 28 extracts an actual measurement value of the travel time of the road section calculated by the required time calculation unit 23 (S40). Then, the information on the extracted actual travel time, the road section, the date and time, the driver identification, and the like is transmitted to the traffic information distribution apparatus 10 via the communication unit 21 (S42).

In the traffic information distribution device 10, when information related to the actually measured travel time or the like is received from the information providing device 20, the control unit 15 determines the road based on the traffic information provided from the external device stored in the information storage unit 12. The required travel time at the time of actual measurement in the section and the congestion degree of the road are acquired (S15). The information storage unit 12 calculates a difference between the required travel time acquired based on the traffic information and the actually measured travel time received (S50). Then, a difference data record is generated based on the calculated difference, and is stored in the difference database 13 in association with the corresponding driver ID and road ID (S52). This difference data record includes information such as a difference time, a time stamp, and a congestion degree (see FIG. 2).

(Second Embodiment)
A series of processes executed by the traffic information distribution device 10 and the information provision device 20 in the traffic information provision system 1 according to the second embodiment of the present disclosure will be described with reference to the flowchart of FIG. In this embodiment, the configuration of the traffic information distribution device 10 and the information provision device 20 in the traffic information provision system 1 is the same as that of the traffic information distribution device 10 and the information provision device 20 in the traffic information provision system 1 according to the first embodiment. . The traffic information providing system 1 according to the second embodiment differs from the traffic information providing system 1 according to the first embodiment in that the calculation process of the required time with difference is executed by the information providing device 20 instead of the traffic information distributing device 10. .

In the required time information provision processing, the control unit 15 of the traffic information distribution device 10 determines the current travel time of the target road section based on the latest traffic information provided from the external device stored in the information storage unit 12. Is acquired (S11). The target road section referred to here is a road section on the current route of the vehicle and around the destination or a road section on the planned route to the destination based on data received from the information providing device 20 via the communication unit 11. is there. The control unit 15 transmits the required time information including the acquired required travel time to the information providing apparatus 20 belonging to the target driver via the communication unit 11 (S13).

Further, the difference amount calculation unit 14 calculates the difference statistic of the target road section related to the target driver based on the difference data group accumulated in the difference database 13 (S21, S23). This processing content is the same as the processing content of S20 and S22 in the first embodiment (see FIG. 3) described above. Then, information including the calculated difference statistic is transmitted to the information providing apparatus 20 belonging to the target driver via the communication unit 11 (S25).

Meanwhile, the control unit 28 of the information providing device 20 receives the required time information and the difference statistics transmitted from the traffic information distribution device 10 via the communication unit 21 (S31). The control unit 28 calculates the required time with difference for the target road section based on the received required travel time and the difference statistic (S33). For example, when the difference statistic is calculated as a time difference in the entire target road section, the required time with difference is calculated by adding or subtracting the time difference to the required travel time based on external traffic information. Or, if the difference statistics are calculated as a time difference or speed difference per unit distance, convert them into a time difference according to the distance of the target road section, and add or subtract it to the required travel time based on external traffic information. The required time with difference is calculated.

Then, the control unit 28 presents information to the target driver based on the calculated required time information with difference (S35). The content of this information presentation is the same as S32 in the first embodiment described above (see FIG. 3). The procedure of the difference data accumulation process is the same as the procedure of the first embodiment (see FIG. 3) described above, and a description thereof will be omitted.

According to the traffic information providing system 1 of the above embodiment, the following effects are obtained.

The difference statistics obtained by statistically processing multiple difference data records accumulated based on the driver's traffic experience are added to the travel time provided as the current traffic information, thereby driving the driver. Information on required time with difference reflecting characteristics can be predicted. As described above, by applying the driving characteristics based on the actual driving experience of the driver to the prediction of the required travel time, it is possible to perform prediction with high certainty that does not depend on the psychological state of the driver.

The information providing apparatus 20 acquires the actual travel time and notifies the traffic information distribution apparatus 10, so that the traffic information distribution apparatus 10 has a plurality of differences regarding the difference between the travel required time based on the traffic information and the actual travel time. Difference data including data records can be generated and stored in the difference database 13.

(Modification)
In the said embodiment, the traffic information delivery apparatus 10 and the information provision apparatus 20 cooperated, and demonstrated the example which performs a series of processes regarding provision of required time with a difference. The present disclosure can be implemented not only by this but also by a single information processing apparatus having various processing functions executed by the traffic information distribution apparatus 10 and the information providing apparatus 20 in the above embodiment.

In the present disclosure, the difference database 13 functions as a storage unit. The processing executed in S10 and S11 by the control unit 15 of the traffic information distribution device 10 functions as a first acquisition unit. The processes executed in S20, S22, S21, and S23 by the difference amount calculation unit 14 of the traffic information distribution device 10 function as a difference calculation unit. The process executed in S12 by the control unit 15 of the traffic information distribution apparatus 10 and the process executed in S33 by the control unit 28 of the information providing apparatus 20 function as a correction unit. The processing executed in S32 and S35 by the control unit 28 of the information providing device 20 functions as a presentation unit. The processing executed in S40 and S41 by the required time calculation unit 23 of the information providing apparatus 20 functions as a second acquisition unit.

The above disclosure includes the following aspects.

The traffic information providing system 1 according to an aspect of the present disclosure includes a storage unit 13, first acquisition units S10 and S11, difference calculation units S20, S22, S21, and S23, correction units S12 and S33, and presentation units S32 and S35. The storage unit accumulates difference data regarding the driving characteristics of the driver. The difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections. Each difference data group includes a plurality of difference data records respectively corresponding to different times. Each difference data record includes information regarding the difference between the estimated travel time required for the vehicle to travel the corresponding road section and the actual travel time required for the vehicle to travel the corresponding road section in the past. Show. The predicted travel time is acquired based on traffic information provided from an external device. The first acquisition unit acquires a predicted travel time required for the vehicle to travel on the target road section that is one of the plurality of road sections based on traffic information provided from an external device at the present time. The difference calculation unit performs a predetermined statistical process on a plurality of difference data records included in the difference data group corresponding to the target road section accumulated in the storage unit, thereby calculating the difference statistic of the target road section. calculate. The correction unit corrects the predicted travel time acquired by the first acquisition unit based on the difference statistic calculated by the difference calculation unit, and calculates the required time with difference. The presenting unit presents presentation information regarding the required time with difference calculated by the correcting unit to the driver.

According to the traffic information providing system 1 described above, it is possible to correct the traffic information related to the travel time provided from the outside using the difference data that is accumulated based on the driver's traffic experience and indicates the driving characteristics of the driver. For example, it is assumed that when the driver passes a certain road section, traffic information related to the estimated travel time of the road section is provided. At that time, the difference between the predicted travel time of the road section provided as traffic information and the actual travel time measured when the vehicle actually traveled is accumulated. And when the driver travels again on the same road section, by taking into account the estimated travel time provided as the current traffic information, the statistical amount obtained by statistically processing the difference data accumulated by the past traffic experience, Information on the estimated travel time reflecting the driving characteristics of the driver can be presented to the driver. As described above, by applying the driving characteristics based on the actual driving experience of the driver to the prediction of the required travel time, it is possible to perform prediction with high certainty that does not depend on the psychological state of the driver.

The traffic information providing system 1 may further include second acquisition units S40 and S41 and recording units S50, S52, S51, and S53. The second acquisition unit acquires the measured actual travel time when the vehicle actually passes through each road section of the plurality of road sections. The recording unit includes a plurality of road sections acquired based on actual travel time taken to move each road section of the plurality of road sections acquired by the second acquisition unit and traffic information provided from an external device. The difference data record regarding the difference with the predicted travel time corresponding to each road section is generated and recorded in the storage unit 13.

In the traffic information providing system 1, the first acquisition unit may acquire the predicted travel time using one section on the planned route to the destination of the vehicle as the target road section. The difference calculation unit may calculate the difference statistic of the target road section by performing predetermined statistical processing on a plurality of difference data records of the difference data group corresponding to the target road section on the planned route.

In the traffic information providing system 1, each difference data group may be stored in the storage unit 13 in association with information indicating the road type of the corresponding road section. The difference calculation unit corresponds to another road section having the same road type as the road type of the target road section when the number of the plurality of difference data records included in the difference data group corresponding to the target road section does not satisfy the specified number. The difference statistic may be calculated using a plurality of difference data records included in the difference data group.

In the traffic information providing system 1, each difference data record corresponds to information indicating the degree of congestion of the road section when the predicted travel time of the corresponding road section is acquired based on the traffic information provided from the external device. It may be attached and stored in the storage unit 13. The difference calculation unit, when the number of the plurality of difference data records included in the difference data group corresponding to the target road section is less than the specified number, the current congestion of the target road section indicated by the traffic information provided from the external device The difference statistic may be calculated using a plurality of difference data records included in another difference data group corresponding to another road section having the same congestion degree as the degree.

In the traffic information providing system 1, the difference calculation unit may calculate the difference statistic using all the difference data records related to the driver accumulated in the storage unit 13.

In the traffic information providing system 1, the storage unit 13 may further accumulate difference data relating to driving characteristics of at least one other driver. In this case, in the target road section, when the number of the plurality of difference data records related to the driver does not satisfy the prescribed number, the difference calculating unit identifies another driver having difference data similar to the characteristics of the difference data related to the driver, The difference statistic may be calculated using a plurality of difference data records corresponding to the identified target road section of another driver.

The traffic information providing system 1 includes a distribution device 10 provided in the center and an information providing device 20 provided in the vehicle. The distribution device 10 and the information providing device 20 perform information communication with each other. The distribution apparatus 10 includes a storage unit 13, a first acquisition unit, a difference calculation unit, and a correction unit. The information providing apparatus 20 includes a presentation unit. As an alternative, the distribution device 10 may include a storage unit 13, a first acquisition unit, and a difference calculation unit, and the information provision device 20 may include a correction unit and a presentation unit.

Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

The storage unit (13) for accumulating difference data relating to the driving characteristics of the driver, and the difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections, and each difference data group corresponds to a different time. Including a plurality of difference data records, each difference data record in the past depending on the estimated travel time required for the vehicle to move the corresponding road section and the vehicle actually moving the corresponding road section The estimated travel time is acquired based on traffic information provided from an external device,
A first acquisition unit that acquires a predicted travel time required for the vehicle to travel on a target road section that is one of the plurality of road sections based on traffic information provided from the external device at the present time ( 15, S10, S11),
Differences in the target road section are performed by performing predetermined statistical processing on the plurality of difference data records included in the difference data group corresponding to the target road section, which are stored in the storage unit (13). A difference calculation unit (14, S20, S22, S21, S23) for calculating statistics,
The predicted travel time acquired by the first acquisition unit (15, S10, S11) is corrected based on the difference statistic calculated by the difference calculation unit (14, S20, S22, S21, S23). And a correction unit (15, S12, 28, S33) for calculating the required time with difference,
A presentation unit (28, S32, S35) for presenting to the driver the presentation information related to the required time with difference calculated by the correction unit (15, S12, 28, S33);
A traffic information provision system.
A second acquisition unit (23, S40, S41) that acquires the measured actual travel time when the vehicle actually passes through each road section of the plurality of road sections;
Based on the measured travel time taken to move each road section of the plurality of road sections acquired by the second acquisition unit (23, S40, S41) and the traffic information provided from the external device. The recording unit (12, S50, S52,) that generates the difference data record related to the difference from the predicted travel time corresponding to each road section of the plurality of road sections acquired in the above and stores the difference data record in the storage unit (13). S51, S53),
The traffic information providing system according to claim 1, further comprising:
The first acquisition unit (15, S10, S11) acquires the predicted travel time using the section on the planned route to the destination of the vehicle as the target road section,
The difference calculation unit (14, S20, S22, S21, S23) performs predetermined statistical processing on a plurality of difference data records of the difference data group corresponding to the target road section on the planned route. The difference statistic of the target road section is calculated with
The traffic information providing system according to claim 1 or 2.
Each difference data group is stored in the storage unit (13) in association with information indicating the road type of the corresponding road section,
If the number of the plurality of difference data records included in the difference data group corresponding to the target road section is less than a specified number, the difference calculation unit (14, S20, S22, S21, S23) Calculating the difference statistic using a plurality of difference data records included in a difference data group corresponding to another road section having the same road type as the road type of the section;
The traffic information providing system according to any one of claims 1 to 3.
Each difference data record is associated with information indicating the degree of congestion of the road section when the predicted travel time of the corresponding road section is acquired based on the traffic information provided from the external device and stored in the memory Part (13),
When the number of the plurality of difference data records included in the difference data group corresponding to the target road section is less than a specified number, the difference calculation unit (14, S20, S22, S21, S23) The difference using a plurality of difference data records included in another difference data group corresponding to another road section having the same congestion degree as the current congestion degree of the target road section indicated by the traffic information provided from Calculate statistics,
The traffic information providing system according to any one of claims 1 to 4.
The difference calculation unit (14, S20, S22, S21, S23) calculates the difference statistic by using all the difference data records related to the driver stored in the storage unit (13).
The traffic information providing system according to any one of claims 1 to 3.
The storage unit (13) further accumulates difference data relating to driving characteristics of at least one other driver,
The difference calculation unit (14, S20, S22, S21, S23), when the number of the plurality of difference data records related to the driver does not satisfy a specified number in the target road section, the characteristics of the difference data related to the driver Identifying another driver having difference data similar to the above, and calculating the difference statistic using a plurality of difference data records corresponding to the target road section of the identified other driver,
The traffic information providing system according to any one of claims 1 to 3.
A distribution device (10) provided in the center, and an information providing device (20) provided in the vehicle,
The distribution device (10) and the information providing device (20) perform information communication with each other,
The distribution device (10) includes the storage unit (13), the first acquisition unit (15, S10), the difference calculation unit (14, S20, S22), and the correction unit (15, S12). With
The information providing device (20) includes the presentation unit (28, S32).
The traffic information providing system according to claim 1.
A distribution device (10) provided in the center, and an information providing device (20) provided in the vehicle,
The distribution device (10) and the information providing device (20) perform information communication with each other,
The distribution device (10) includes the storage unit (13), the first acquisition unit (15, S11), and the difference calculation unit (14, S21, S23).
The information providing device (20) includes the correction unit (28, S33) and the presentation unit (28, S35).
The traffic information providing system according to claim 1.