JP2019168899A - Congestion information determination device - Google Patents

Abstract

To provide a congestion determination device capable of accurately determining a detailed congestion position.SOLUTION: A control unit 3 of a congestion occurrence prediction device 1 acquires a traffic flow velocity V2 in a zone Z2, sets a length of a congestion determination zone on the basis of the traffic flow velocity V2, and performs a congestion determination in the congestion determination zone. In a case where the traffic flow velocity in the zone Z2 is low, the congestion determination zone is set short and in a case where the traffic flow velocity in the zone Z2 is high, the congestion determination zone is set long, thereby accurately determining a detailed congestion position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a traffic jam information determination device.

  2. Description of the Related Art Generally, a system is known in which traffic congestion information is acquired from a vehicle (moving body), a sensor on a road, and the like to identify a congested section and provide it to a user. In such a system, it is preferable to provide the latest information as much as possible. Therefore, a traffic situation estimation system is proposed in which the in-vehicle side system collects traffic jam information based on the driving situation and the center side system receives the traffic jam information from the vehicle (see, for example, Patent Document 1). . In the traffic situation estimation system described in Patent Document 1, traffic information is collected by the in-vehicle side system, thereby reducing the processing load on the server side system and shortening the time required for providing information.

JP 2011-133413 A

  In a system that provides traffic jam information, it has been desired not only to reduce the time required for providing information as described in Patent Document 1, but also to provide detailed information. In other words, it is preferable to provide information about the end portion (tail or head) of the traffic jam by performing the traffic jam judgment in a narrower range. However, if the range in which the traffic jam is determined is simply narrowed, the number of acquired information (number of samples) regarding the traffic flow decreases, and the determination accuracy decreases. As described above, it is difficult to determine a detailed traffic jam position and to improve the determination accuracy.

  Therefore, an object of the present invention is to provide, as an example, a traffic jam determination device that can accurately determine a detailed traffic jam position.

  In order to solve the above-described problem and achieve the object, the traffic jam judging device according to the present invention is based on an acquisition unit that acquires a traffic jam occurrence prediction degree in a predetermined section, and the traffic jam occurrence prediction degree, A setting unit configured to set a length of a traffic congestion determination section including at least a part of the predetermined section; and a determination unit configured to perform traffic congestion determination in the traffic congestion determination section based on traffic flow information of the traffic congestion determination section. It is characterized by.

It is a block diagram which shows the outline of the traffic congestion determination apparatus which concerns on the Example of this invention. It is a top view which shows an example of the road of determination object of the said traffic congestion determination apparatus. It is a flowchart which shows an example of the traffic congestion determination process which the said traffic congestion determination apparatus performs.

  Embodiments of the present invention will be described below. The traffic jam determination device according to the embodiment of the present invention sets the length of the traffic jam determination section including at least a part of the predetermined section based on the acquisition unit that acquires the traffic jam occurrence prediction degree in the predetermined section and the traffic jam occurrence prediction degree And a determination unit that performs traffic jam determination in the traffic jam determination section based on the traffic flow information of the traffic jam determination section.

  If there is a high probability of occurrence of traffic jams, there is a high possibility that the moving speed of the moving body is low (or the number of moving bodies is large) in this predetermined section, so the traffic jam judgment section is set short to determine the detailed traffic jam position. Even so, it is easy to secure the number of samples, and accuracy is unlikely to decrease. On the other hand, if the prediction of occurrence of traffic congestion is low, there is a high possibility that the moving speed of the moving body is high (or the number of moving bodies is small) in this predetermined section, but it is not necessary to determine the detailed traffic jam position, and the congestion determination section Can be set long to ensure the number of samples. Therefore, it is possible to accurately determine a detailed traffic jam position by setting the traffic jam determination section short when the traffic jam occurrence prediction level is high, and by setting the traffic jam determination zone long when the traffic jam prediction level is low. .

  The setting unit sets the length of the traffic jam determination section to the first length when the traffic jam occurrence prediction degree is less than a predetermined threshold, and sets the length of the traffic jam determination section when the traffic jam occurrence prediction degree is equal to or greater than the threshold. It is preferable to set the length to a second length shorter than the first length.

  At this time, the setting unit sets the length of the predetermined section as the first length when the congestion occurrence prediction degree is less than the threshold, and divides the predetermined section into a plurality when the congestion occurrence prediction degree is equal to or greater than the threshold. The second length may be set. Thereby, when the traffic jam occurrence prediction degree is equal to or greater than the threshold, it is possible to determine where the traffic jam occurs in the predetermined section. Note that the number of divisions may be set in advance, or the number of divisions may be determined based on the degree of congestion occurrence prediction.

  Further, the setting unit may set the second length by dividing the predetermined section into equal lengths when the congestion occurrence prediction degree is equal to or greater than a threshold value. The traffic jam determination device further includes a tendency acquisition unit that acquires a traffic jam trend of a section including at least a predetermined section, and the setting unit responds to the traffic jam tendency when the traffic jam occurrence prediction degree is equal to or greater than a threshold. A plurality of second lengths may be set by dividing the length. As a result, a shorter second length can be set in a section in which the moving speed is predicted to be low (or the number of moving objects is large) in the predetermined section, and the detailed traffic jam position can be accurately determined. it can.

  The acquisition unit preferably acquires traffic flow information, which is information related to the traffic flow of a moving body in a predetermined section, as the degree of occurrence of traffic jams. Moreover, traffic flow information should just contain at least one among traffic flow speed and traffic flow. The traffic flow speed may be, for example, an average value, a median value, a mode value, or the like of movement speeds of a plurality of moving bodies in a predetermined section. The traffic flow rate is, for example, movement existing in a predetermined section at a certain moment. It only has to be the number of bodies.

  Moreover, an acquisition part may acquire the information about the traffic condition in at least one of the front and back of a predetermined area as a traffic congestion generation | occurrence | production prediction degree.

  As a result, by setting the traffic situation information other than the predetermined section as the congestion occurrence prediction degree, it is possible to obtain the congestion occurrence prediction degree before the actual occurrence of the congestion in the predetermined section, and the actual congestion position and Time lag is unlikely to occur in the information on the traffic jam position to be provided. For example, when a traffic jam occurs in front of a predetermined section, an accident occurs, or a fallen object exists, the occurrence of the traffic jam in the predetermined section is predicted thereafter. In such a case, if the traffic jam determination section is shortened in advance in a predetermined section, detailed traffic jam position information can be provided quickly compared with a method of shortening the traffic jam determination section after actual traffic jam occurs. it can.

  The traffic jam determination device preferably further includes a storage unit that stores the length of the traffic jam determination section set by the setting unit. Thereby, when the setting unit sets the length of the traffic jam determination section, the information stored in the storage unit can be updated. The information stored and updated in the storage unit in this way can be used for traffic jam determination from the next time. For example, in a section where it is easy to generate a traffic jam and it is preferable to set a traffic jam judgment section short, the traffic jam judgment section can be set in advance. In addition, if the length of the traffic jam judgment section and the time set for this are stored in association with each other, the traffic jam is likely to occur only in a specific time zone, and it is preferable to set the traffic jam judgment section short only in that time zone. In the time zone, the traffic jam determination section can be set short in advance.

  Further, the traffic jam determination method according to the present embodiment sets the length of the traffic jam determination section including at least a part of the predetermined section based on the acquisition step of acquiring the traffic jam occurrence prediction degree in the predetermined section and the traffic jam occurrence prediction degree. And a determination step for determining the traffic jam in the traffic jam determination section based on the traffic flow information of the traffic jam determination section. According to the traffic jam determination method of the present embodiment, the detailed traffic jam position is accurately determined by setting the length of the traffic jam determination section based on the traffic jam occurrence prediction degree of the predetermined section, as in the above-described traffic jam determination apparatus. can do.

  Moreover, it is good also as a traffic congestion determination program which performs the traffic congestion determination method mentioned above by computer. Thereby, a detailed traffic jam position can be accurately determined using a computer.

  Further, the above-described traffic jam determination program may be stored in a computer-readable recording medium. As a result, the program can be distributed as a single unit in addition to being incorporated into the device, and version upgrades can be easily performed.

  Examples of the present invention will be specifically described below. As shown in FIG. 1, the traffic jam determination device 1 according to the present embodiment is an information collection processing device including a communication unit 2, a control unit 3, and a storage unit 4. The traffic congestion determination device 1 collects information from a plurality of vehicles (moving bodies) 10, processes the information, and provides the processed information to the user (vehicle passenger).

  The communication unit 2 includes a circuit and an antenna for communicating with a network such as the Internet or a public line, and communicates with the vehicle 10 to transmit / receive information. That is, the traffic congestion determination device 1 acquires the probe information of the vehicle 10 by the communication unit 2.

  The control unit 3 is configured by a CPU (Central Processing Unit) having a memory such as a RAM (Random Access Memory) and a ROM (Read Only Memory), for example, and governs overall control of the traffic jam determination device 1.

  The storage unit 4 is composed of, for example, a hard disk or a nonvolatile memory, and stores map data.

  The vehicle 10 is a probe car including a probe information generation device 20 that transmits probe information to the traffic jam determination device 1. The probe information generation device 20 includes a communication unit 11, a control unit 12, and a current position estimation unit 13. And a traveling state information acquisition unit 14.

  The communication unit 11 includes a circuit, an antenna, and the like for communicating with a network such as the Internet or a public line, and communicates with the congestion determination device 1 to transmit / receive information. That is, the probe information generation apparatus 20 transmits information (latitude / longitude information and movement speed information) acquired by the current position estimation unit 13 and the traveling state information acquisition unit 14 to the traffic jam determination apparatus 1 as probe information. In addition to the above information, the probe information transmitted by the probe information generation device 20 includes other information such as measurement results by a gyro sensor or an acceleration sensor, information on operation of a brake or a direction indicator, and the like. Alternatively, the travel locus information after map matching may be included instead of the latitude and longitude information.

  The control unit 12 is configured by a CPU (Central Processing Unit) having a memory such as a RAM (Random Access Memory) and a ROM (Read Only Memory), for example, and governs overall control of the probe information generation apparatus 20.

  The current position estimation unit 13 estimates the current position (absolute position) of the vehicle 10, and may be a GPS reception unit that receives radio waves transmitted from a plurality of GPS (Global Positioning System) satellites, for example. The current position estimation unit 13 acquires latitude / longitude information as the current position of the vehicle 10.

  The traveling state information acquisition unit 14 is, for example, a CAN (Controller Area Network), and the control unit 12 can acquire movement speed information of the vehicle 10.

  As described below, the traffic congestion determination device 1 sets a traffic congestion determination section and performs traffic congestion determination.

[First setting method]
In the map data stored in the storage unit 4, the road is divided into sections of a predetermined length. In addition, the length of these sections should just be the length according to the road classification (highway or general road) and a speed limit, and may always be constant or may be variable.

  The control unit 3 acquires probe information from the probe information generation device 20 through the communication units 2 and 11 at predetermined time intervals or predetermined travel distances. Based on the probe information, the control unit 3 calculates an average value of the moving speeds of the plurality of vehicles 10 that travel in each of the sections divided as described above. This average value becomes the traffic flow speed, and it can be predicted that the lower the traffic flow speed, the higher the possibility of traffic congestion in that section. That is, the control unit 3 acquires traffic flow information including traffic flow speed (information related to the traffic flow of the vehicle 10 in each section) as a congestion occurrence prediction degree, and functions as an acquisition unit.

  In this embodiment, the average value of the moving speeds of the plurality of vehicles 10 is used as the traffic flow speed. However, the median value, the mode value, and the like may be used as the traffic flow speed. Moreover, the control part 3 may acquire the traffic flow information containing a traffic flow rate as a traffic congestion generation | occurrence | production prediction degree. The traffic flow rate may be, for example, the number of vehicles 10 existing in each section at a certain moment.

  The control unit 3 sets the length of the traffic jam determination section in each section based on the traffic flow speed. That is, the control unit 3 compares the traffic flow speed with the speed threshold value, and when the traffic flow speed is higher than the speed threshold value (that is, when the traffic jam occurrence prediction degree is less than the threshold value), the length of the traffic jam determination section is set to the first length. When the speed threshold value is below (that is, when the traffic jam occurrence prediction level is equal to or higher than the threshold value), the length of the traffic jam judgment section is set to a second length shorter than the first length, and functions as a setting unit. . In the traffic jam determination section set in this way, the control unit 3 performs traffic jam determination based on the traffic flow speed in the traffic jam determination section, and functions as a determination unit. In addition, the control part 3 may perform traffic congestion determination based on the traffic flow volume of a traffic congestion determination area.

  A specific example of the method of setting the length of the traffic jam determination section and performing the traffic jam determination in the traffic jam determination section will be described with reference to FIGS. The road shown in FIG. 2 is a highway with a speed limit of 100 km / h, and is divided into sections having a length of 100 m. Among the three sections Z1 to Z3 arranged in order from the rear side to the front side in the traveling direction, the central section Z2 is set as a predetermined section.

  The control unit 3 of the traffic jam determination device 1 executes the traffic jam determination process shown in FIG. The controller 3 calculates the traffic flow speed V2 in the section Z2 (step S1), and determines whether or not the traffic flow speed V2 is equal to or lower than a first threshold value V01 (for example, 40 km / h) (step S2). When the traffic flow speed V2 is higher than the first threshold value V01 (N in Step S2), the control unit 3 sets the entire section Z2 as the traffic jam determination section, that is, sets the length L of the traffic jam determination section to the first length (100 m). (Step S3). On the other hand, when the traffic flow velocity V2 is equal to or lower than the first threshold value V01 (Y in step S2), the control unit 3 equally divides the section Z2 into two as the traffic congestion determination sections, that is, the traffic congestion determination sections. The length L is set to the second length (50 m) (step S4).

  Following step S3 and step S4, the control unit 3 calculates the traffic flow speed V2x in all the set traffic congestion determination sections (step S5). That is, when passing through step S3, only the traffic flow speed V21 in one traffic congestion determination section is calculated, and when passing through step S4, the traffic flow speeds V21 and V22 in each of the two traffic congestion determination sections are calculated.

  Next, the control unit 3 determines whether or not the traffic flow speed V2x in each congestion determination section is equal to or lower than a second threshold (for example, 30 km / h) V02 (step S6). At this time, the second threshold V02 is preferably lower than the first threshold V01, but may be equal or higher. When a plurality of traffic congestion determination sections are set, the control unit 3 determines whether or not the traffic flow speed V2x of all the traffic congestion determination sections is equal to or lower than the second threshold value V02. In steps S5 and S6, the traffic flow may be calculated instead of the traffic flow speed, and the traffic congestion may be determined by comparing this with a threshold value.

  When the traffic flow speed V2x in the traffic jam determination section is higher than the second threshold V02 (N in step S6), the control unit 3 determines that no traffic jam has occurred in the traffic jam determination section (step S7). On the other hand, when the traffic flow velocity V2x in the traffic jam determination section is equal to or lower than the second threshold V02 (Y in step S6), the control unit 3 determines that traffic jam has occurred in the traffic jam determination section (step S8). ).

  Following step S7 and step S8, the control unit 3 transmits the traffic jam determination result to the vehicle 10 by the communication unit 2, and stores it in the storage unit 4 (step S9), and returns to step S1 again. That is, the length L of the traffic jam determination section set in the section Z2 is stored in the storage unit.

  For example, when the traffic flow speed V2 of the section Z2 calculated in step S1 is 35 km / h, the section Z2 is equally divided into two in step S4, and a traffic congestion determination section is set. In step S5, it is assumed that the traffic flow speed V21 in the rear traffic congestion determination section is calculated as 45 km / h, and the traffic flow speed V22 in the front traffic congestion determination section is calculated as 25 km / h. In this case, it is possible to obtain a traffic jam determination result indicating that no traffic jam occurs in the traffic jam determination section on the rear side and traffic jam occurs in the traffic jam determination section on the front side. That is, information is obtained that the end of the traffic jam is located in the traffic jam judgment section on the front side.

  On the other hand, when the congestion determination is always performed with the section Z2 as the congestion determination section (comparative example), the traffic flow velocity V2 of the entire section Z2 is higher than the second threshold (threshold for determining the congestion) V02. However, although the traffic jam occurs in the front zone of the zone Z2, the traffic jam determination result indicates that no traffic jam occurs in the zone Z2 as a whole. That is, information that the end of the traffic jam is located ahead of the section Z2 is obtained. Thus, according to the method of the present embodiment, a detailed traffic jam position can be determined.

  Further, when the section Z2 is equally divided into two in step S4 and the traffic congestion determination section is set, the traffic flow speed is low in the section Z2 (the moving speed of the vehicle 10 is low), so the traffic congestion determination section is set short. Even so, the number of vehicles staying in the traffic jam determination section and the time for one vehicle to stay in the traffic jam judgment section tend to increase, so that it is easy to secure the number of samples and the accuracy is hardly lowered. On the other hand, when the entire section Z2 is set as the congestion determination section in step S3, although the traffic flow speed is high in the section Z2 (the moving speed of the vehicle 10 is high), it is not necessary to determine the detailed congestion position, and the congestion determination section The number of samples can be ensured by lengthening.

  With the above configuration, the length of the traffic congestion determination section is set based on the traffic flow speed in the section Z2, that is, when the traffic flow speed is low, the traffic congestion determination section is set short, and when the traffic flow speed is high By setting a long traffic jam determination section, it is possible to accurately determine a detailed traffic jam position.

  Further, when the traffic flow speed V2 is equal to or lower than the first threshold value V01, by dividing the section Z2 into two equal parts and setting each as a traffic jam determination section, where the traffic jam occurs in the section Z2. Can be determined.

  Moreover, when the traffic determination device 1 includes the storage unit 4, the information stored in the storage unit 4 can be updated when the control unit 3 sets the length of the congestion determination section. The information stored and updated in the storage unit 4 in this way can be used for traffic jam determination from the next time. For example, in a section where it is easy to generate a traffic jam and it is preferable to set a traffic jam judgment section short, the traffic jam judgment section can be set in advance. In addition, if the length of the traffic jam judgment section and the time set for this are stored in association with each other, the traffic jam is likely to occur only in a specific time zone, and it is preferable to set the traffic jam judgment section short only in that time zone. In the time zone, the traffic jam determination section can be set short in advance.

[Second setting method]
In the first setting method, in step S4, when the traffic flow speed V2 is equal to or lower than the first threshold value V01, the section Z2 is equally divided into two. However, in the second setting method, at least the section The traffic congestion tendency of the section including Z2 is acquired, and the section Z2 is divided into lengths corresponding to the traffic congestion tendency.

  The control unit 3 also acquires the traffic flow speeds of the sections Z1 and Z3, thereby determining a traffic jam tendency based on the traffic flow speeds of the sections Z1 to Z3, and functions as a trend acquisition unit. For example, when the traffic flow speed of the front section Z3 is lower than the traffic flow speed of the section Z2, the traffic flow speed is lower in the front side than in the rear side in the section Z2. If the traffic flow speed in the rear section Z1 is lower than the traffic flow speed in the section Z2, the traffic flow speed in the rear side is lower in the section Z2 than in the front side. It can be judged that there is a traffic jam tendency.

  When the traffic flow speed is lower on the front side than on the rear side in the section Z2, the control unit 3 sets the length of the traffic judgment section on the front side to be shorter than the length of the traffic judgment section on the rear side. . When the length of the section Z2 is 100 m, for example, the length of the forward traffic congestion determination section may be set to 30 m, and the length of the rear traffic congestion determination section may be set to 70 m. On the other hand, when the traffic flow speed is lower on the rear side than on the front side in the section Z2, the control unit 3 makes the length of the traffic judgment section on the front side longer than the length of the traffic judgment section on the rear side. Set. When the length of the section Z2 is 100 m, for example, the length of the forward traffic congestion determination section may be 70 m, and the length of the rear traffic congestion determination section may be 30 m.

  In addition, the division ratio of the section Z2 may be constant, or may be variable according to, for example, the difference or ratio of the traffic flow speed between the sections. That is, the division ratio may be increased as the difference or ratio between the traffic flow speeds between adjacent sections increases.

  With the above configuration, the detailed traffic jam position can be accurately determined by setting the length of the traffic jam determination zone based on the traffic flow speed in the zone Z2, as in the first setting method.

  Further, by dividing the section Z2 into lengths according to the traffic jam tendency and setting the length of the traffic jam determination section, the section Z2 is predicted to have a low traffic flow speed (or a large traffic flow). The length of a shorter traffic jam determination section can be set, and a detailed traffic jam position can be accurately determined.

[Third setting method]
In the first setting method, the control unit 3 acquires the traffic flow information as a traffic jam occurrence prediction degree. However, in the third setting method, at least one of the front and rear of the section Z2 is used as the traffic jam occurrence prediction degree. Get information about traffic conditions on one side.

  For example, the control unit 3 acquires information on the presence or absence of occurrence of traffic congestion in the front of the section Z2, the presence or absence of an accident, and the presence or absence of a falling object. If a traffic jam occurs in front of the section Z2, an accident occurs, or there is a fallen object, the occurrence of the traffic jam in the section Z2 is predicted thereafter. Get higher.

  When at least one of the three conditions of whether a traffic jam occurs in front of the section Z2, an accident occurs, or a falling object is present, the control unit 3 performs the first setting method or the second setting. Similar to the setting method, the length of the traffic jam determination section is set by appropriately dividing the section Z2. On the other hand, when not satisfy | filling all said three conditions, the control part 3 makes the whole area Z2 the congestion determination area.

  With the above configuration, the detailed traffic jam position can be accurately determined by setting the length of the traffic jam determination zone based on the traffic jam occurrence prediction degree in the zone Z2.

  In addition, by setting the traffic situation information other than the section Z2 as the congestion occurrence prediction degree, it is possible to obtain the congestion occurrence prediction degree before the actual congestion occurs in the section Z2, and the actual congestion position, Time lag is unlikely to occur with the information on the traffic jam location to be provided. If a traffic jam occurs in front of the zone Z2, an accident occurs, or there is a fallen object, the traffic jam actually occurs by shortening the traffic jam judgment zone in the zone Z2 in advance. Compared with the method of shortening the traffic jam judgment section, detailed traffic jam position information can be provided quickly.

[Fourth setting method]
The fourth setting method of the present embodiment includes an acquisition step of acquiring a congestion occurrence prediction degree in a predetermined section having a plurality of lanes, and a setting step of setting the number of lanes in the congestion determination section in the predetermined section based on the congestion occurrence prediction degree And a determination step of performing traffic jam determination in the traffic jam determination section based on the traffic flow information of the traffic jam determination section. That is, in the first to third setting methods described above, the section Z2 is divided in the traveling direction when the degree of occurrence of traffic jam is high, whereas the fourth setting method is a section Z2 having a plurality of lanes. The purpose is to perform traffic jam determination for each lane. Accordingly, as will be described below, whether to perform the traffic jam determination for each road (that is, collect a plurality of lanes) or to perform the traffic jam determination for each lane is set according to the degree of occurrence of the traffic jam.

  The control unit 3 acquires the congestion occurrence prediction degree in the same manner as the first to third setting methods, and when the congestion occurrence prediction degree is less than a predetermined threshold, sets the number of lanes in the congestion determination section in the section Z2 to 2. When the congestion occurrence prediction degree is equal to or greater than the threshold, the number of lanes in the congestion determination section in the section Z2 is set to 1.

  When a section having three or more lanes is targeted, the number of traffic congestion determination sections equal to the number of lanes may be set, or the number of traffic congestion determination sections different from the number of lanes may be set. For example, when setting a congestion determination section in a section with three lanes, three congestion determination sections corresponding to one lane each may be set, a congestion determination section corresponding to one lane, and two A traffic jam determination section corresponding to the lane may be set.

  With the above configuration, by setting the number of lanes in the traffic jam determination section based on the traffic jam occurrence prediction degree in the section Z2, when the traffic jam occurrence prediction degree is low, the traffic congestion determination section in the section Z2 may be set to a plurality of lane numbers The number of samples can be increased, and when the prediction of occurrence of traffic congestion is high, detailed traffic congestion determination can be performed by setting a small number of traffic lanes in the traffic congestion determination section in the zone Z2, so that detailed traffic congestion positions can be accurately determined. it can.

  As described above, the first to fourth setting methods have been described. However, these are part of the setting method, and may be set as appropriate. For example, a combination of the method of dividing the section Z2 in the traveling direction as in the first to third setting methods and the method of determining traffic congestion for each lane in the section Z2 having a plurality of lanes as in the fourth setting method May be.

  In addition, this invention is not limited to the said Example, The other deformation | transformation etc. which can achieve the objective of this invention are included in this invention.

  For example, in the first setting method and the second setting method of the embodiment, when the traffic flow speed V2 is equal to or lower than the first threshold value V01, the traffic jam determination zone is set by dividing the zone Z2 into two. However, the number of divisions in the section Z2 may be three or more. Further, after dividing the section Z2, the divided section may be further divided based on the traffic congestion occurrence prediction degree in the divided section. In addition, when sections in which the congestion occurrence prediction degree is equal to or greater than the threshold value continue, the entire section may be divided into a predetermined number to set the congestion determination section. For example, when the congestion occurrence prediction degree is equal to or greater than the threshold in all the sections Z1 to Z3, the continuous 300 m section may be divided into 10 to set the congestion determination section.

  Further, the length of the traffic jam determination section may be set based on the traffic jam occurrence prediction degree, and the section Z2 may not be divided. For example, when the traffic jam occurrence prediction degree is less than the threshold, the entire section Z2 is set as the traffic jam judgment section, and when the traffic jam occurrence prediction degree is equal to or greater than the threshold, the length of the traffic jam judgment section is shortened and a part of the section Z2 is jammed. It is good also as a judgment area. Further, the entire traffic jam determination section may not be included in the section Z2, and the traffic jam determination section only needs to include at least a part of the section Z2. That is, the traffic jam determination section may be set so as to straddle the section Z1 and the section Z2, or the traffic jam determination section may be set so as to straddle the section Z2 and the section Z3.

  Moreover, in the said Example, although the traffic congestion determination apparatus 1 shall be provided with the memory | storage part 4, the traffic congestion determination apparatus does not need to be provided with the memory | storage part. For example, the traffic jam determination device may transmit the determination result to the outside, and the determination result may be stored in an external storage device, or the determination result may not be stored and the history may not be used.

  Moreover, the congestion occurrence prediction degree is not limited to that acquired in the first to third setting methods. For example, when the probe information includes information related to the operation of the brake and the direction indicator and information related to acceleration, the congestion occurrence prediction degree may be acquired using such information. That is, when there are obstacles (low speed vehicles, accident vehicles, fallen objects, etc.) on the road, other traveling vehicles may decelerate or change lanes to avoid them. Therefore, if information indicating that the vehicle has decelerated or information indicating that the lane has been changed (the direction indicator has been operated) is obtained, traffic jams may occur in the sections before and after that, and traffic jams may occur thereafter. High nature. Further, when a plurality of vehicles exhibit similar behavior (deceleration or lane change), it can be determined that there is a higher possibility that an obstacle exists.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, although the present invention has been particularly illustrated and described with respect to particular embodiments, it will be understood that the present invention is not limited in shape to the embodiments described above without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

1 traffic jam determination device 3 control unit (acquisition unit, setting unit, determination unit, trend acquisition unit)
4 storage unit 10 vehicle (moving body)

Claims (10)

An acquisition unit for acquiring a degree of occurrence of traffic jam in a predetermined section;
A setting unit for setting a length of a traffic jam determination section including at least a part of the predetermined section based on the traffic jam occurrence prediction degree;
A traffic jam determination device comprising: a determination unit that performs traffic jam determination in the traffic jam determination zone based on traffic flow information of the traffic jam determination zone.   The setting unit sets the length of the congestion determination section to a first length when the congestion occurrence prediction degree is less than a predetermined threshold, and when the congestion occurrence prediction degree is equal to or more than the threshold. The congestion determination device according to claim 1, wherein the length of the congestion determination section is set to a second length shorter than the first length.   The setting unit sets the length of the predetermined section as the first length when the congestion occurrence prediction degree is less than the threshold value, and sets the predetermined section when the congestion occurrence prediction degree is equal to or more than the threshold value. The congestion determination device according to claim 2, wherein the second length is set by being divided into a plurality. A trend acquisition unit that acquires a traffic jam tendency of a section including at least the predetermined section;
The setting unit is configured to divide the predetermined section into lengths according to the congestion tendency and set a plurality of the second lengths when the congestion occurrence prediction degree is equal to or more than the threshold. The traffic judgment device according to claim 3.   The said acquisition part acquires the traffic flow information which is the information regarding the traffic flow of the mobile body in the said predetermined area as the said traffic congestion generation | occurrence | production prediction degree, The traffic congestion of any one of Claims 1-4 characterized by the above-mentioned. Judgment device.   The traffic determination device according to claim 5, wherein the traffic flow information includes at least one of a traffic flow speed and a traffic flow.   The said acquisition part acquires the information about the traffic condition in at least one of the front and the back of the said predetermined area as the said traffic jam generation | occurrence | production prediction degree, The any one of Claims 1-4 characterized by the above-mentioned. Traffic jam judging device.   The traffic determination device according to any one of claims 1 to 7, further comprising a storage unit that stores a length of a traffic jam determination section set by the setting unit. An acquisition step of acquiring a degree of occurrence of traffic jams in a predetermined section;
A setting step of setting a length of a traffic jam determination section including at least a part of the predetermined section based on the traffic jam occurrence prediction degree;
And a determination step for determining a traffic jam in the traffic jam determination section based on the traffic flow information of the traffic jam determination section.   A traffic congestion determination program that causes a computer to execute the traffic congestion determination method according to claim 9.

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