CN104969031A - Traffic information providing system - Google Patents

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 References to Related Applications

This application is based on Japanese Application No. 2013-019552 filed on February 4, 2013, and the content of the description is incorporated herein.

technical field

The present application relates to a traffic information providing system that provides traffic information related to travel time required for roads.

Background technique

As a technology for predicting traffic conditions, the prior art described in Patent Document 1 is known. In this prior art, information reliability indicating how much the driver trusts the provided traffic information, and an action change rate indicating how much the driver's behavior changes according to the information reliability are defined. In addition, the present invention discloses a method of correcting traffic condition predictions by using a driver's behavior change rate based on information reliability.

In order to provide traffic information related to road travel time, when it is assumed that the estimated travel time is corrected using information reliability and action change rate as in the above-mentioned prior art, there is the following problem. The judgment of whether the driver trusts the provided information or whether the driver changes his behavior based on the provided information is greatly influenced by the driver's psychological state during driving. Therefore, depending on the psychological state at the time of driving, the information reliability and action change rate used for correcting traffic information may not necessarily match the driver's judgment, and the prediction may become unreliable.

prior art literature

patent documents

Patent Document 1: (Japanese) Unexamined Patent Application Publication No. 2007-164262

Contents of the invention

The present application was made in view of the above circumstances, and an object thereof is to provide a traffic information providing system that provides traffic information related to the time required for movement of roads by taking into account driving characteristics based on the driver's traffic experience. Travel information.

A traffic information providing system according to an aspect of the present application includes a storage unit, a first acquisition unit, a difference calculation unit, a correction unit, and a presentation unit. The storage unit stores difference data related to driving characteristics of the driver. The difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections. Each differential data group includes a plurality of differential data records respectively corresponding to different times. Each differential data record represents information related to the difference between the predicted travel time required for the vehicle to travel the corresponding road segment in the past and the measured travel time it actually took the vehicle to travel the corresponding road segment difference between. The estimated travel time is obtained based on traffic information provided from an external device. Currently, the first acquisition unit acquires the estimated travel time required for the vehicle to travel on the target road section, which is one of the plurality of road sections, based on the traffic information provided from the external device. The difference calculation unit performs predetermined statistical processing on the plurality of difference data records included in the difference data group corresponding to the target road section stored in the storage unit, and calculates a difference statistic of the target road section. 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 presentation unit presents the driver with information for presentation related to the time required for the difference calculated by the correction unit.

According to the system described above, it is possible to provide traffic information on time required for road movement by taking into account driving characteristics based on the driver's traffic experience.

Description of drawings

The above object and other objects, features, and advantages of the present application will become more apparent from the following detailed description with reference to the accompanying drawings. In this figure,

FIG. 1 is a block diagram showing the configuration of a traffic information providing system according to an embodiment of the present application,

FIG. 2 is an explanatory diagram showing the structure of difference data,

3 is a flowchart showing the procedure of processing executed by the traffic information providing system according to the first embodiment of the present application,

4 is a flowchart showing the procedure of processing executed by the traffic information providing system according to the second embodiment of the present application.

Detailed ways

Hereinafter, embodiments of the present application will be described based on the drawings. In addition, this application is not limited to the following embodiment, It can implement in various forms.

(first embodiment)

As shown in FIG. 1, the traffic information providing system 1 includes a traffic information distribution device (TRFC INFO DISTRIBUTE) 10 installed in a center (center) for distributing traffic information to vehicles in a wide area, and a TRFC INFO DISTRIBUTE 10 used in a vehicle driven by a driver. Information providing device (INFO PROVIDE) 20. In addition, in FIG. 1 , only one information providing device 20 is shown in order to simplify the description, 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 calculation unit (DIFF CALC) 14, and a control unit (CONTROL) 15.

The communication unit 11 is used to communicate with various external devices such as the information providing device 20, the traffic information center (TRFC INFO CENTER) 30, the communication device (COMMDEVICE) 40, etc. via a wireless communication network or a communication network such as the Internet. device. The communication unit 11 transmits and receives various information to and from the information providing device 20 for providing the driver with information on the time required for traveling on the road.

In addition, the communication unit 11, for example, transmits road traffic information from a traffic information center 30 of a VICS (Vehicle Information Communication System, registered trademark) or various communication devices 40, or from a probe vehicle such as a taxi. Receive the latest traffic information such as detection information. The traffic information received from the outside via the communication unit 11 includes, for example, travel time, traffic jams, traffic obstacles, traffic restrictions, weather, wind direction, road surface conditions, data useful for route search among traffic jam prediction information, and the like.

The information accumulation unit 12 accumulates traffic information received from an external traffic information center 30 or communication device 40 via the communication unit 11 . Furthermore, the information accumulation unit 12 calculates the difference between the required travel time of a certain road section acquired based on the accumulated traffic information and the actual travel time measured by the vehicle actually traveling on the road section. The travel time required for a certain road section refers to the predicted travel time required to travel from the start point to the end point of the road section based on the accumulated traffic information, and the measured travel time refers to the actual travel time of the vehicle from the road section. The time it takes to move from the start point to the end point of the section. Then, the difference data related to the driving characteristics of the driver of the vehicle involved in the measurement of the actually measured travel time and the road section are accumulated in the difference database 13 .

The difference database 13 is a storage device that accumulates corresponding difference data groups for each driver of the vehicle. The details of the difference data accumulated in the difference database 13 will be described with reference to FIG. 2 . As shown in FIG. 2 , the difference data is composed of information on the difference of the travel time required for each road section associated with the driver's unique identification information (driver ID). In the difference database 13, difference data related to a plurality of drivers are 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 represents information related to the difference between the predicted travel time required for the vehicle to move on a certain road section and the difference between the vehicle's actual travel time in the past obtained based on traffic information provided from the outside in the past. The difference between the measured travel times taken to move on road segments.

In the information for each road section, each information including differential time, time stamp, and congestion degree is stored in association with identification information (road ID) and road type (expressway, general road, etc.) indicating the road section. Consists of differential data records.

The differential time is information indicating the time difference between the actual travel time measured when the vehicle driven by the driver is passing on the road section and the travel time obtained based on the traffic information provided from the outside at that time. The time difference between required times. The time stamp is information indicating the date and time when the actually measured travel time was measured. The degree of congestion is information indicating the degree of congestion (for example, congestion, congestion, traffic, etc.) in the road section indicated by the traffic information provided from the outside at that time. Every time the actually measured travel time is notified from the information providing device 20 , the difference data record is stored in the difference database 13 as difference data related to the driver of the vehicle involved in the measurement of the actually measured travel time.

Return to the description of the block diagram of FIG. 1 . The difference 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 difference statistics representing the driving characteristics of the driver in the road section. quantity. This difference statistic is an index indicating how much time difference is expected to occur when the driver travels a certain road section and the time required for movement based on external traffic information. The time difference of the entire road section or the time difference per unit distance It can be represented by physical quantities such as time difference or speed difference.

The control unit 15 has a function of executing various information processing related to distribution of traffic information. The control unit 15 receives data such as the vehicle's current location and destination, 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 or various communication devices 40, etc., the control unit 15 acquires a road section based on surrounding roads or road sections on a predetermined route based on data received from the information providing device 20 as a target. The time required for movement of the road section of this object. Then, the acquired travel required time is transmitted to the information providing device 20 of the transmission source, which is obtained by adding and correcting the difference statistic calculated by the difference calculation unit 14 .

The information providing device 20 is realized by, for example, a navigation system mounted on a vehicle, a portable information communication terminal held by a driver of the vehicle, or the like. The information providing device 20 has a communication unit (COMM) 21, a map database (MAP DB) 22, a required time calculation unit (TIME CALC) 23, a vehicle position determination unit (POSI SPECIFY) 24, a display unit (DISPLAY) 25, an operation Section (OPERATE) 26, audio output section (AUDIO) 27, and control section (CONTROL) 28.

The communication unit 21 transmits and receives various information about travel time required for the current location and the surroundings of the destination or road sections on a predetermined route to and 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, for example, various communication methods such as a mobile phone, DSRC (Dedicated Short Range Communications, Dedicated Short Range Communications), and wireless LAN can be used.

The map database 22 is a database related to map data for navigation and 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, and route guidance, intersection data, place name data for displaying place names, and the like. In addition, instead of the information providing device 20 including the map database 22 , the information providing device 20 may acquire map data necessary for route guidance from the traffic information distribution device 10 via the communication unit 21 .

The required time calculation unit 23 measures the travel required 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 travel required time measured by the required time calculation unit 23 is transmitted to the traffic information distribution device 10 via the communication unit 21 .

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

The display unit 25 is a display device that displays various image information based on video signals input from the control unit 28 , and is composed of, for example, a display installed near a driver's seat of the vehicle. The display unit 25 displays, 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, and an expected arrival time to the destination calculated based on the time required by the difference difference. , road congestion and other image information.

The operation unit 26 is an input device for providing commands related to operations received from the user to the control unit 28, and is formed on the display surface of the display unit 25 by mechanical switches arranged around the display unit 25. touch panel etc. The audio output unit 27 is an output device that outputs audio information based on audio signals from the control unit 28 . Thereby, various information can be presented to the user through both the display on the display unit 25 and the audio output from the audio output unit 27 .

The control unit 28 has a function of performing various information processing related to navigation. Examples of the navigation-related processing performed 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 superimposes and displays a marker 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 moves the current marker along with the movement of the host vehicle. 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 uses the current location of the own vehicle as the departure location, and uses the road data read from the map database 22 to search for a route from the departure location to the destination. The best path to the destination. Then, the route obtained by the route search is used as the planned route, and the planned route is superimposed on the map image and displayed on the display unit 25 . In addition, the control unit 29 displays guidance information such as a traveling direction or outputs by voice in front of a specific guidance point such as a branch point on the route as the vehicle moves, and guides the vehicle so that the vehicle can follow the route to the destination. Travel on a predetermined route.

Furthermore, the control unit 28 transmits data such as the vehicle's current location and destination, a planned route to the destination, and driver identification information to the traffic information distribution device 10 via the communication unit 21 . Then, the control unit 28 receives the information on the time required for the difference corresponding to the road section on the predetermined route calculated by the traffic information distribution device 10 . The control unit 28 superimposes the received time required with the difference, the expected arrival time to the destination calculated by reflecting the time required with the difference, and the degree of road congestion on a map image and displays it on the display unit 25 . Thereby, the driver can know the required time reflecting his own driving characteristics and the expected arrival time.

A series of processes executed 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. 3 . The processing performed by the traffic information distribution device 10 and the information providing device 20 is classified into required time information providing processing and differential data accumulation processing.

Here, the flowchart described in this application, or the processing of the flowchart is constituted by a plurality of sections (or referred to as steps), and each section is represented by, for example, S10. Furthermore, each unit can be divided into a plurality of sub-units, and on the other hand, it is also possible to combine a plurality of units into one unit. Furthermore, each part comprised in this way can be called a device, a module, and a method (means).

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

In addition, the difference amount calculation unit 14 extracts difference data corresponding to the road section of the object related to the target driver based on the data received from the information providing device 20 from among the difference data groups accumulated in the difference database 13 group, and statistically process a plurality of differential data records included in the extracted differential data group (S20). Here, for example, an average value, a median value, a mode value, etc. of the difference times in a plurality of difference data records are calculated. Then, based on the result of the statistical processing, the difference statistic in the target road section related to the target driver is calculated ( S22 ). The difference statistic is represented by a physical quantity such as the time difference of the entire target road section, or the time difference or speed difference per unit distance.

In addition, improvements shown in the following (1) to (4) can also be applied as the calculation method of the difference statistics by the statistical processing of the difference data recording in S20 and S22.

(1) There is a possibility that the driver's driving characteristics cannot be accurately grasped because the driver's traffic history is small or the number of data used in the statistical processing of the difference data record is insufficient in the road section on which the driver is traveling for the first time. . Therefore, when the number of difference data records corresponding to the target road section is less than a predetermined number, among the difference data sets related to the driver, the same road category as that of the target road section may be assigned. Statistically process the differential data sets of other road intervals of the road category. For example, based on the difference data group stored for each road type, the difference statistic obtained by converting the difference time into a speed difference is calculated. And, by adding the time difference converted from the differential speed to the movement required time of the target road section, it is possible to calculate the additional time required for the difference reflecting the driving characteristics of the driver in an environment similar to the target road section, This differential speed is a differential speed based on the traffic history on other road sections of the same road type.

(2) It is also possible to perform statistical processing according to the degree of congestion attached to the differential data record. Specifically, when the differential data records corresponding to the target road section are less than a predetermined number, from the differential data group related to the driver, the road corresponding to the target grasped from external traffic information and the like is extracted. The difference data group with the same congestion degree as the current congestion degree of the interval is used for the calculation of difference statistics. For example, a differential statistic obtained by converting the differential time into a speed difference is calculated based on the differential data group stored according to the degree of congestion. And, by adding the time difference converted from the differential speed to the travel required time of the target road section, it is possible to calculate the additional differential required time reflecting the driving characteristics of the driver in an environment similar to the current congestion level, This differential speed is a differential speed based on the traffic history on road sections with the same congestion degree. In addition, the above-mentioned methods (1) and (2) can also be combined to calculate the difference statistics.

(3) The difference statistic may be calculated using all difference data sets accumulated for the target driver regardless of the road classification.

(4) The difference statistic may also be calculated by using difference data records related to other drivers with similar driving characteristics to the subject driver as a substitute for the difference statistic related to the subject driver. For example, when the difference data records of the target road section related to the target driver are less than a predetermined number, use the difference of the target road section related to other drivers whose characteristics are similar to the target driver difference data record data records to compute difference statistics. As a method of specifying other drivers with similar driving characteristics, as an example, specifying a driver whose summary statistic recorded in the difference data for each driver is similar to the target driver is described.

The control unit 15 calculates an additional differential value related to the target road section based on the current required travel time of the target road section acquired in S10 and the difference statistic calculated by the difference calculation unit 14 in S22. It takes time (S12). For example, when the differential statistic is calculated as the time difference of the entire target road section, the differential time is calculated by adding and subtracting the time difference to the current travel time based on external traffic information. Alternatively, when the difference statistics are calculated as the time difference or speed difference per unit distance, they are converted into time differences corresponding to the distance of the target road section, and are calculated for the current movement requirements based on external traffic information. The time is added and subtracted to calculate the time required for the difference. The control unit 15 transmits the additional required time information including the calculated additional required time to the information providing device 20 belonging to the target driver via the communication unit 11 ( S14 ).

On the other hand, the control unit 28 of the information provision device 20 receives the required time information with difference 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 time information with difference (S32). For example, the control unit 28 calculates the predicted arrival time to the destination using the differential required time for surrounding roads or road sections on the planned route, and displays the estimated arrival time to the destination on the navigation screen of the display unit 25 . Alternatively, the degree of congestion calculated from the difference between the travel time estimated from the normal travel speed and the differential time may be superimposed on the road on the map image and displayed on the display unit 25 .

Next, difference data accumulation processing will be described. The control unit 28 extracts the actual measurement value of the traveling time of the road section calculated by the required time calculation unit 23 every time the vehicle travels through a predetermined road section ( S40 ). Then, information related to the extracted actually measured travel time, the road section, date and time, and identification of the driver is transmitted to the traffic information distribution device 10 via the communication unit 21 ( S42 ).

In the traffic information distributing device 10, when information on the actually measured travel time etc. is received from the information providing device 20, the control unit 15 acquires the road section based on the traffic information provided from an external device stored in the information storage unit 12. The time required for movement and the degree of road congestion during the actual measurement in (S15). The information accumulation unit 12 calculates the difference between the required travel time obtained based on the traffic information and the received actually measured travel time (S50). Then, a difference data record is generated based on the calculated difference, and stored in the difference database 13 in association with the corresponding driver ID and road ID (S52). This differential data record includes information such as differential time, time stamp, and congestion degree (see FIG. 2 ).

(second embodiment)

A series of processes performed by the traffic information distribution device 10 and the information providing device 20 in the traffic information providing system 1 according to the second embodiment of the present application will be described with reference to the flowchart of FIG. 4 . In this embodiment, the configurations of the traffic information distribution device 10 and the information providing device 20 in the traffic information providing system 1 are the same as those of the traffic information distribution device 10 and the information providing device 20 in the traffic information providing system 1 of the first embodiment. In the traffic information providing system 1 of the second embodiment, the calculation process of the time required for the difference is not performed by the traffic information distribution device 10 but by the information providing device 20, which is different from the traffic information providing system 1 of the first embodiment. different.

In the required time information providing process, the control unit 15 of the traffic information distribution device 10 acquires the current travel required time ( S11). The target road section referred to here is a road section around the vehicle's current location and destination, and a road section on a planned route to the destination based on data received from the information providing device 20 via the communication unit 11 . The control unit 15 transmits the required time information including the acquired travel required time to the information providing device 20 belonging to the target driver via the communication unit 11 ( S13 ).

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

On the other hand, the control unit 28 of the information provision 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 differential required time for the target road section based on the received travel required time and difference statistics ( S33 ). For example, when the difference statistic is calculated as the time difference of the entire target road section, the time difference is calculated by adding and subtracting the time difference to the movement required time based on external traffic information. Or, when the difference statistics are calculated as a time difference or a speed difference per unit distance, they are converted into a time difference corresponding to the distance of the target road section, and added for the time required for movement based on external traffic information Subtract to calculate the time required for the difference.

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

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

By adding a difference statistic obtained by statistically processing a plurality of difference data records accumulated based on the driver's traffic experience to the time required for travel provided as current traffic information, it is possible to predict and reflect the driving behavior of the driver. The information on the time required for the difference is attached to the characteristic. In this way, by applying the driving characteristics based on the driver's actual traffic experience to the prediction of travel time, it is possible to make a highly reliable prediction that does not depend on the driver's mental state.

The information providing device 20 obtains the actually measured traveling time and notifies the traffic information distributing device 10, so that the traffic information distributing device 10 can generate a plurality of difference data records including the difference between the required traveling time based on the traffic information and the actually measured traveling time. and stored in the differential database 13.

(Modification)

In the above-described embodiment, an example has been described in which the traffic information distribution device 10 and the information providing device 20 cooperate to execute a series of processes related to providing the time required to add a difference. Without being limited thereto, the present application can also be implemented by a separate information processing device or the like having various processing functions performed by the traffic information distribution device 10 and the information providing device 20 in the above-described embodiments together.

In this application, 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 processing executed in S20 , S22 , S21 , and S23 by the difference calculation unit 14 of the traffic information distribution device 10 functions as a difference calculation unit. The processing executed in S12 by the control unit 15 of the traffic information distribution device 10 and the processing executed in S33 by the control unit 28 of the information providing device 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 device 20 functions as a second acquisition unit.

The above disclosure includes the following aspects.

The traffic information providing system 1 according to one aspect of the present application includes a storage unit 13 , first acquisition units S10 , S11 , difference calculation units S20 , S22 , S21 , S23 , correction units S12 , S33 , and presentation units S32 , S35 . The storage unit stores difference data related to driving characteristics of the driver. The difference data includes a plurality of difference data groups respectively corresponding to a plurality of road sections. Each differential data group includes a plurality of differential data records respectively corresponding to different times. Each differential data record represents information related to the difference between the predicted travel time required for the vehicle to travel the corresponding road segment in the past and the measured travel time it actually took the vehicle to travel the corresponding road segment difference between. The estimated travel time is obtained based on traffic information provided from an external device. Currently, the first acquisition unit acquires the estimated travel time required for the vehicle to travel on the target road section, which is one of the plurality of road sections, based on the traffic information provided from the external device. The difference calculation unit performs predetermined statistical processing on the plurality of difference data records included in the difference data group corresponding to the target road section stored in the storage unit, and calculates a difference statistic of the target road section. The correction unit corrects the estimated 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 presentation unit presents the driver with information for presentation related to the time required for the difference calculated by the correction unit.

According to the traffic information providing system 1 described above, it is possible to correct traffic information related to travel time provided from the outside using difference data accumulated based on the driver's traffic experience and representing the driver's driving characteristics. For example, it is assumed that when a driver travels a certain road section, traffic information related to the predicted travel time of the road section is provided. At this time, the difference between the predicted travel time of the road section provided as traffic information and the measured travel time measured when the vehicle actually travels is accumulated. And, when the driver travels the same road section again, by adding a statistic that statistically processes difference data accumulated based on past traffic experience to the predicted travel time provided as the current traffic information, it is possible to The driver is presented with information on the estimated travel time reflecting the driver's driving characteristics. In this way, by applying the driving characteristics based on the driver's actual traffic experience to the prediction of travel time, it is possible to make a highly reliable prediction that does not depend on the driver's mental state.

The traffic information providing system 1 may further include second acquiring units S40, S41 and recording units S50, S52, S51, S53. The second acquisition unit acquires the measured actual travel time when the vehicle actually travels through each of the plurality of road sections. The recording unit generates a difference data record related to the difference, and records it in the storage unit 13. The difference is obtained by the second obtaining unit to travel on each of the plurality of road sections. The difference between the predicted travel time corresponding to each of the plurality of road sections obtained from the traffic information provided by the device.

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

In the traffic information providing system 1 described above, 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. When the number of differential data records included in the differential data group corresponding to the target road section is less than a predetermined number, the difference calculation unit may use other roads corresponding to the same road category as that of the target road section. Compute the difference statistics for multiple difference data records contained in the difference data set of the interval.

In the traffic information providing system 1 described above, each difference data record may be stored in association 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 an external device. in the storage unit 13. When the number of differential data records included in the differential data group corresponding to the target road section is less than a predetermined number, the difference calculation unit may use the difference corresponding to the target road section shown in the traffic information provided from the external device. Differential statistics are calculated from multiple differential data records contained in other differential data sets of other road segments with the same congestion degree as the current congestion degree of the segment.

In the traffic information providing system 1 described above, 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 described above, the storage unit 13 may further store difference data related to the driving characteristics of at least one other driver. At this time, when the number of difference data records related to the driver is less than a predetermined number in the target road section, the difference calculation unit specifies another driving group having difference data similar in characteristics to the difference data related to the driver. The driver uses the determined plurality of difference data records of other drivers corresponding to the target road section to calculate the difference statistics.

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

Although this application was described based on the Example, it should be understood that this application is not limited to this Example or structure. This application also includes various modified examples or modifications within the equivalent range. In addition, various combinations or forms, and further combinations or forms including only one element among them, above, or below, also fall within the category or scope of thought of the present application.

Claims (9)

1. A system for providing traffic information, comprising: The storage unit (13) accumulates difference data about the driving characteristics of the driver, 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 groups respectively corresponding to different times. difference data records, each difference data record representing the difference between the predicted moving time required for the vehicle to move on the corresponding road section in the past and the measured moving time actually taken by the vehicle to move on the corresponding road section information of a difference, the predicted travel time is obtained based on traffic information provided from an external device; The first acquiring unit (15, S10, S11) currently acquires a forecast required for the vehicle to move on a target road section, which is one of the plurality of road sections, based on the traffic information provided from the external device. moving time; A difference calculation unit (14, S20, S22, S21, S23), for the plurality of difference data contained in the difference data group corresponding to the target road section stored in the storage unit (13), Recording and carrying out prescribed statistical processing, thereby calculating the difference statistics of the target road section; The correction unit (15, S12, 28, S33) calculates the difference statistic calculated by the first acquisition unit (15, S10, S11) The predicted movement time obtained is corrected, and the time required for calculating the difference is calculated; and A presentation unit (28, S32, S35) presents information for presentation to the driver regarding the time required for the additional difference calculated by the correction unit (15, S12, 28, S33). 2. The traffic information providing system as claimed in claim 1, further comprising: A second acquisition unit (23, S40, S41) acquires the measured travel time when the vehicle actually travels on each of the plurality of road sections; and The recording unit (12, S50, S52, S51, S53) generates the cost of moving on each road section of the plurality of road sections obtained by the second obtaining unit (23, S40, S41). the difference data record of the difference between the actual measured travel time and the predicted travel time corresponding to each of the plurality of road sections obtained based on the traffic information supplied from the external device, and record to the storage unit (13). 3. The traffic information providing system as claimed in claim 1 or claim 2, The first acquisition unit (15, S10, S11) acquires the predicted travel time by setting a section on a predetermined route up to a 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 predetermined route, thereby calculating The difference statistics of the target road section. 4. The traffic information providing system according to any one of claims 1 to 3, Each differential data group is stored in the storage unit (13) in association with information indicating the road type of the corresponding road section, The difference calculation unit (14, S20, S22, S21, S23) uses The differential statistic is calculated from a plurality of difference data records included in a difference data set corresponding to other road sections having the same road category as that of the target road section. 5. The traffic information providing system according to any one of claims 1 to 4, Each difference data record is stored in the storage unit in association with information indicating the degree of congestion of the road section when the predicted travel time of the corresponding road section is obtained based on the traffic information supplied from the external device. In (13), The difference calculation unit (14, S20, S22, S21, S23) uses The difference statistics are calculated from a plurality of difference data records included in other difference data sets corresponding to other road sections having the object shown in the traffic information provided from the external device. The current congestion level of the road section is the same as the congestion level. 6. The traffic information providing system according to any one of claims 1 to 3, The difference calculation unit (14, S20, S22, S21, S23) calculates the difference statistic using all the difference data records about the driver accumulated in the storage unit (13). 7. The traffic information providing system according to any one of claims 1 to 3, The storage unit (13) also accumulates difference data on driving characteristics of at least one other driver, The difference calculation unit (14, S20, S22, S21, S23) determines that there is a difference related to the driver in the target road section when the number of the plurality of difference data records related to the driver is less than a predetermined number. For other drivers whose characteristics of the differential data are similar to the differential data of the driver, the differential statistics are calculated using the determined plurality of differential data records of other drivers corresponding to the target road section. 8. The traffic information providing system as claimed in claim 1, The traffic information providing system includes a distribution device (10) installed in the center and an information providing device (20) installed 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) , The information providing device (20) includes the presentation unit (28, S32). 9. The traffic information providing system as claimed in claim 1, The traffic information providing system includes a distribution device (10) installed in the center and an information providing device (20) installed 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).