Road safety change estimation system

Abstract

A road safety change estimation system is provided that can estimate a change in safety when road information for a target road is changed. [Solution] A safety change estimation system 1 stores first pre-change road information and first post-change road information for each registered road Y, as well as changes in traffic rule violation information for each registered road Y before and after a change is made from the first pre-change road information to the first post-change road information. When the current second pre-change road information of a target road X and the second post-change road information for which a change is being considered for the target road X are input, one or more registered roads whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more are extracted from the multiple registered roads, and changes in traffic rule violation information for the extracted one or more registered roads are output.

Description

[Technical field]

[0001] The present invention relates to a road safety change estimation system capable of estimating a change in safety when road information of a target road is changed. [Background technology]

[0002] Conventionally, in order to select a highly convenient facility or a candidate location for facility installation, a technique has been known that extracts traffic road environment information around the candidate location for facility installation, which information is generated based on driving information including vehicle speed, position, and time information (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-142141 A Summary of the Invention [Problem to be solved by the invention]

[0004] On the other hand, there is a demand to estimate how the safety of a road (changes in traffic rule violations, changes in traffic accidents, changes in traffic volume, etc.) will change when the road information of the target road (traffic rules, road width, etc.) is changed.

[0005] Therefore, an object of the present invention is to provide a road safety change estimation system capable of estimating a change in safety when road information of a target road is changed. [Means for solving the problem]

[0006] The present invention provides a road safety change estimation system comprising: a first memory unit that stores, for each of a plurality of registered roads, first pre-change road information before a change is made to each registered road, first post-change road information after a change is made to each registered road, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles for each registered road before and after a change is made from the first pre-change road information to the first post-change road information; an input unit into which a user inputs current second pre-change road information of a target road and second post-change road information for which a change is being considered for the target road; an extraction unit that extracts from the plurality of registered roads one or more registered roads for which the first pre-change road information matches the second pre-change road information by a first predetermined value or more and the first post-change road information matches the second post-change road information by a second predetermined value or more; and an output unit that outputs the changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles for the extracted one or more registered roads.

[0007] According to this configuration, it is possible to grasp what kind of change in traffic rule violation information, traffic accident information, traffic volume information, or travel information of traveling vehicles has occurred on a registered road where the road information of the target road has been changed in the same way, so that it is possible to estimate the change in safety when the road information of the target road is changed. For example, information on the change in safety such as "When the road width of the extracted registered road was increased, the number of parking violations increased", "When the speed limit of the extracted registered road was lowered, the number of traffic accidents hardly changed", "When the road width of another registered road connected to the extracted registered road was increased, the traffic volume increased, but the number of traffic accidents hardly changed" can be obtained, so that it is possible to make a decision such as "Change the road information as scheduled", "Change to other road information", or "Cancel the change of the road information".

[0008] In another aspect of the present invention, there are provided a road safety change estimation program and a road safety change estimation method corresponding to the above road safety change estimation system. Effect of the Invention

[0009] According to the safety change estimation system of the present invention, it is possible to estimate a change in safety when road information of a target road is changed. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is an explanatory diagram of changing road information of a target road according to an embodiment of the present invention; [Diagram 2] FIG. 1 is a block diagram of a safety change estimation system according to an embodiment of the present invention; [Diagram 3] FIG. 2 is an explanatory diagram of a registered road according to an embodiment of the present invention; [Figure 4] FIG. 2 is an explanatory diagram of a rule application position according to an embodiment of the present invention; [Diagram 5] FIG. 2 is an explanatory diagram of registered roads extracted by an embodiment of the present invention; [Figure 6] Flowchart of safety change estimation according to an embodiment of the present invention DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A safety change estimation system 1 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 6. FIG.

[0012] The safety change estimation system 1 is for estimating a change in safety accompanying a change in road information of a target road X (FIG. 1 shows an example of changing the road width of the target road X), and as shown in FIG. 2, includes a memory unit 2, an acquisition unit 3, a judgment unit 4, an input unit 5, an extraction unit 6, and an output unit 7.

[0013] The memory unit 2 stores, for each of a plurality of registered roads Y (see Figure 3), first pre-change road information before a change is made on each registered road Y, first post-change road information after a change is made on each registered road Y, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles on each registered road Y before and after the change is made from the first pre-change road information to the first post-change road information.

[0014] It is preferable to store as many roads as possible as the registered roads Y, and for example, it is possible to store all roads in Japan. In this embodiment, each link is treated as a registered road Y, as shown in FIG.

[0015] The road information may include at least one of the following: the type of the road, the length of the road, the width of the road, the traffic rules applied to the road, and road information of other roads connected to the road. Note that since the type of the road and the width of the road are the same type of information, it may be possible to use only one of them.

[0016] In addition, it is preferable that the road information further includes at least one of the cycle of traffic lights installed on the road, the number of lanes on the road, the gradient of the road, and information on buildings in the vicinity of the road.

[0017] When the registered road Y is newly established, the fact that the road does not exist is stored as the first pre-change road information.

[0018] Possible types of registered road Y include national expressways, urban expressways, general national roads, major local roads, major local roads (designated city roads), general prefectural roads, major general roads, general roads, and minor roads.

[0019] Possible building information includes the height, width, depth, shape, color, distance from the road, etc. of buildings, tunnels, bridges, and other structures adjacent to the road.

[0020] Possible changes in the traffic rule violation information include a change in the number of each type of traffic rule violation, a change in the number of all traffic rule violations, and the like.

[0021] Possible changes in traffic accident information include changes in the number of traffic accidents by type (seriousness, etc.) and changes in the total number of traffic accidents.

[0022] Possible changes in traffic volume information include changes in the number of traveling vehicles for each vehicle category (four-wheeled, two-wheeled, large, small, normal) and changes in the number of traveling vehicles for all vehicle categories.

[0023] Possible changes in the driving information of traveling vehicles include changes in the average speed and average driving tendency for each vehicle category (four-wheeled, two-wheeled, large, small, normal), and changes in the average speed and average driving tendency for all vehicle categories.

[0024] Furthermore, it is preferable that the storage unit 2 stores changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in travel information of traveling vehicles for each time period or for each weather condition.

[0025] The method of storing changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of a driving vehicle in the storage unit 2 may be automatic or manual. For example, a configuration may be considered in which changes in traffic accident information are stored manually, and changes in traffic rule violation information, changes in traffic volume information, and changes in driving information are acquired using the storage unit 2, acquisition unit 3, and determination unit 4 and are automatically stored.

[0026] In addition to the above, the storage unit 2 stores road position information relating to each position of a plurality of registered roads Y, and a plurality of traffic rules defined for vehicles traveling on each registered road Y.

[0027] The road position information may be the latitude and longitude of each registered road Y, and it is preferable that the storage unit 2 stores the latitude and longitude of the range in which each registered road Y is included.

[0028] The traffic rules may be those indicated by road signs (regulatory signs, directional signs, auxiliary signs), road markings (regulatory indications, directional indications), etc., and the latitude and longitude of the rule application positions where these rules are applied may be those stated in decision-making data issued by the Public Safety Commission, police stations, etc. If the decision-making data is stated as an address, it is preferable to store information in the storage unit 2 in which the range included in the address is converted in advance into latitude and longitude.

[0029] These rule application locations can be handled as data and do not need to be displayed like a map, but for ease of understanding, if the latitude and longitude of these rule application locations were displayed, it would look like Figure 4. Figure 4 shows that the latitude and longitude of multiple rule application locations where a specified speed limit is applied form point set range A, the latitude and longitude of multiple rule application locations where a stop sign is applied form point set range B, and the latitude and longitude of multiple rule application locations where a parking ban is applied form point set range C.

[0030] The acquisition unit 3 acquires driving information of a registered vehicle Z on a registered road Y.

[0031] In this embodiment, registered vehicle Z (see Figure 3) is equipped with a GPS device (not shown) capable of detecting its own position, and a transmitter unit (not shown) of registered vehicle Z is configured to associate position information regarding its own position detected by the GPS device with time information which is the detection time and transmit it to safety change estimation system 1.

[0032] The acquisition unit 3 acquires the position information and time information transmitted from the registered vehicle Z as travel information. It is preferable to acquire the travel information sequentially in a short span. In this embodiment, the safety change estimation system 1 is installed in a communication center or the like, and communication with the registered vehicle Z is performed wirelessly.

[0033] In this way, based on the driving information obtained from a large number of registered vehicles Z, it is possible to obtain the traffic volume and driving information (speed, etc.) of the traveling vehicles on each registered road Y, so that the difference between the period when the first pre-change road information was used and the period when the first post-change road information was used is stored in the memory unit 2 as a change in traffic volume information or a change in driving information.

[0034] The judgment unit 4 judges violations of each traffic rule of the registered vehicle Z on the registered road Y based on the driving information.

[0035] In detail, based on the road position information stored in the memory unit 2 and the position information included in the driving information, the registered road Y on which the registered vehicle Z has traveled is determined, the traffic rules applicable to the determined registered road Y are extracted from the memory unit 2, and the presence or absence of a violation by the registered vehicle Z is determined based on the extracted traffic rules and the acquired driving information.

[0036] As a method of determining whether or not there is a violation, for example, in the case of a speeding violation, it is determined that there is a violation if the vehicle is speeding by a predetermined amount or more in a speed limit section (point set range A in the case of Fig. 4), and in the case of a stop sign violation, it is determined that there is a violation if the vehicle does not stop for a predetermined period of time within a few meters before or after a stop position (point set range B in the case of Fig. 4).The speed of registered vehicle Z can be calculated by dividing the distance between the two target position information points by the time between them.

[0037] In this way, based on the driving information obtained from a large number of registered vehicles Z, it is possible to obtain violations of each traffic rule on each registered road Y, and the difference between the period when the first pre-change road information was in use and the period when the first post-change road information was in use is stored in memory unit 2 as a change in traffic rule violations.

[0038] To the input unit 5, the user inputs the current second pre-change road information of the target road X and the second post-change road information of the target road X for which change is being considered.

[0039] For example, Figure 1 shows an example of changing the width of the target road X, in which case the user inputs the current road width as the second pre-change road information and the changed road width as the second post-change road information.

[0040] Also, for example, if the user is considering changing the speed limit of the target road X from 60 km / h to 40 km / h, the user will input a speed limit of 60 km / h as the second pre-change road information and a speed limit of 40 km / h as the second post-change road information.

[0041] As a method of inputting road information, it is possible to input it as an image other than numerical values. For example, it is possible to input an image or shape of the target road X as shown in Fig. 1, and to input numerical values ​​of the type of the road, the length of the road, the width of the road, the traffic rules applied to the road, and road information of other roads connected to the road.

[0042] Furthermore, when a new road is to be constructed, the fact that the road does not exist is input as the second pre-change road information.

[0043] The extraction unit 6 extracts one or more registered roads Y from the multiple registered roads Y, whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more.

[0044] This means extracting registered roads Y whose road information has been changed in a similar manner to that of the target road X. It is possible to extract only the registered road Y that matches the target road X, or to extract multiple registered roads Y that match the target road X.

[0045] At this time, even if the direction on the map is different from that of the target road X, the registered road Y that matches the target road X by a predetermined value or more by rotating or inverting the registered road Y is included in the target to be extracted.

[0046] The first and second specified values ​​can be set by the user according to the desired accuracy. However, since there are limited options for, for example, the type of road, the traffic rules that apply to the road, and the number of lanes on the road, it may be possible to set them so that a registered road Y that is an exact match is extracted.

[0047] On the other hand, for other road information, since there are few cases where the information matches perfectly, it is conceivable to set the information with a certain degree of latitude.

[0048] However, since it is preferable to consider not only one type of road information but multiple types of road information, it is preferable to extract the registered road Y whose multiple road information comprehensively matches by a first predetermined value (second predetermined value) or more. For example, it is possible to use AI to extract the registered road Y whose multiple road information comprehensively matches by a first predetermined value (second predetermined value) or more.

[0049] In addition, when multiple road information items are taken into consideration comprehensively, each road information item may be weighted. For example, building information may affect the sunlight on the road, but if the building has little effect on the sunlight, the weight of the building information may be reduced.

[0050] Furthermore, with regard to "road information of other registered roads connected to the road in question," the road information of the other registered road Y1 is also taken into consideration, so the information to be considered spreads infinitely. Therefore, it is possible to gradually reduce the weight of the road information of the other registered roads Y1, Y2, Y3, etc. that are connected in the latter stage.

[0051] In this way, for example, as shown in Fig. 5, a registered road Y is extracted whose road information before and after the change are similar to those of the target road X. Fig. 5 shows an example in which a part of the road information (the length of the registered road Y and the width of another road Y1 connected to it) is slightly different from that of the target road X, but the road information is similar overall and the registered road Y whose road width has been changed in a similar manner is extracted.

[0052] The output unit 7 outputs a change in traffic rule violation information, a change in traffic accident information, a change in traffic volume information, or a change in travel information of traveling vehicles relating to the extracted one or more registered roads Y.

[0053] This makes it possible to grasp what kind of changes in traffic rule violation information, traffic accident information, traffic volume information, or travel information of traveling vehicles have occurred on the registered road Y, where the road information has been changed in the same way as the target road X, and thus makes it possible to estimate the change in safety when the road information of the target road X is changed. For example, information on the change in safety such as "When the road width of the extracted registered road Y was increased, the number of parking violations increased", "When the speed limit of the extracted registered road Y was lowered, the number of traffic accidents hardly changed", and "When the road width of another registered road Y1 connected to the extracted registered road Y was increased, the traffic volume increased, but the number of traffic accidents hardly changed" can be obtained, and it becomes possible to make decisions such as "Change the road information as scheduled", "Change to other road information", and "Cancel the change of road information".

[0054] It is preferable that the output unit 7 is capable of outputting changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in travel information of traveling vehicles for each time period or for each weather condition.

[0055] This makes it possible to take into account changes due to, for example, busy times (such as school commute times), sunlight, and weather conditions, making it possible to more appropriately estimate changes in safety.

[0056] When the output results are displayed on a display unit (not shown), the types of traffic violations, details of traffic accidents, vehicle classifications, time periods, and weather conditions may be displayed in different colors, for example.

[0057] Next, the flow of control in the safety change estimation system 1 of this embodiment will be described with reference to the flowchart of FIG.

[0058] In this flowchart, for each of the multiple registered roads Y, first pre-change road information before the change is made on each registered road Y, first post-change road information after the change is made on each registered road Y, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles on each registered road Y before and after the change is made from the first pre-change road information to the first post-change road information are pre-stored in the memory unit 2.

[0059] First, in the input unit 5, a user inputs the current second pre-change road information of the target road X and the second post-change road information for which a change is being considered for the target road X (S1), and one or more registered roads Y whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more are extracted from the multiple registered roads Y (S2).

[0060] Finally, the change in traffic rule violation information, the change in traffic accident information, the change in traffic volume information, or the change in travel information of traveling vehicles relating to the extracted one or more registered roads Y is output (S3).

[0061] This enables the user to understand what changes have occurred in traffic rule violation information, traffic accident information, traffic volume information, or driving information of traveling vehicles on registered road Y, which has undergone a change in road information similar to that of target road X.

[0062] As described above, in the safety change estimation system 1 of this embodiment, one or more registered roads Y for which the first pre-change road information matches the second pre-change road information by a first predetermined value or more and the first post-change road information matches the second post-change road information by a second predetermined value or more are extracted from among the multiple registered roads Y, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles related to the extracted one or more registered roads Y are output.

[0063] According to this configuration, it is possible to grasp what kind of changes in traffic rule violation information, traffic accident information, traffic volume information, or travel information of traveling vehicles have occurred on the registered road Y, which has undergone a change in road information similar to that of the target road X, and therefore it is possible to estimate the change in safety when the road information of the target road X is changed.

[0064] Furthermore, in the safety change estimation system 1 according to this embodiment, the road information includes at least one of the type of the road, the length of the road, the width of the road, the traffic rules applied to the road, and road information of other roads connected to the road.

[0065] According to such a configuration, the road information includes elements that are particularly significantly related to changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in the driving information of traveling vehicles, so that a more appropriate registered road Y is extracted, thereby making it possible to more accurately estimate changes in safety when the road information of the target road X is changed.

[0066] In addition, in the safety change estimation system 1 according to this embodiment, the road information further includes at least one of the cycle of traffic lights installed on the road, the number of lanes on the road, the gradient of the road, and information on buildings in the vicinity of the road.

[0067] According to such a configuration, the road information further includes factors that are significantly related to changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in the driving information of traveling vehicles, so that a more appropriate registered road Y is extracted, thereby making it possible to more accurately estimate changes in safety when the road information of the target road X is changed.

[0068] Furthermore, in the safety change estimation system 1 according to this embodiment, the first pre-change road information and the second pre-change road information also include a state in which the road does not exist.

[0069] With this configuration, it is even possible to estimate the safety of a new road if it is constructed.

[0070] Furthermore, in the safety change estimation system 1 according to this embodiment, the output unit 7 is capable of outputting changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles for each time period or for each weather condition.

[0071] According to such a configuration, for example, it is possible to take into account changes due to the influence of times when there are many people (such as school commute times), sunlight, and weather, making it possible to more appropriately estimate changes in safety.

[0072] The safety change estimation system of the present invention is not limited to the above-described embodiment, and various modifications and improvements are possible within the scope of the claims.

[0073] For example, in the above embodiment, the safety change estimation system 1 is equipped with the acquisition unit 3 and the judgment unit 4, but it may be configured not to include these and to store in the memory unit 2 changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles that are acquired separately by other methods, etc.

[0074] In addition, in the above embodiment, decision-making data issued by the Public Safety Commission, police stations, etc. is used as the "latitude and longitude of the rule application location where a specified traffic rule is applied" of the present invention, but data obtained from other sources may also be used.

[0075] Furthermore, in the above embodiment, the position information detected by the GPS device is acquired, but the position information may be acquired from an image or the like, for example.

[0076] The present invention can also be applied to a program corresponding to the processing performed by the safety change estimation system, and a recording medium storing the program. In the case of a recording medium, the program is installed in a computer or the like. Here, the recording medium storing the program may be a non-transient recording medium. A CD-ROM or the like is considered as a non-transient recording medium, but is not limited thereto.

[0077] A computer consists of a CPU, memory, and a hard disk, and the program is recorded on the hard disk, and when executed, it is expanded into memory and processed by the CPU. The computer's CPU may be capable of parallel processing, or the computer itself may be capable of distributed processing. The results of the processing can be displayed on any display via a network. [Explanation of symbols]

[0078] 1. Safety change estimation system 2 Storage section 3 Acquisition part 4 Judgment section 5 Input section 6 Extraction part 7 Output section X Target road Y registered road Z registered vehicle

Claims

1. a memory unit that stores, for each of a plurality of registered roads, first pre-change road information before a change is made on each registered road, first post-change road information after a change is made on each registered road, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles on each registered road before and after a change is made from the first pre-change road information to the first post-change road information; an input unit for inputting, by a user, second pre-change road information of a target road and second post-change road information for which a change is being considered for the target road; an extraction unit that extracts, from the plurality of registered roads, one or more registered roads whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more; an output unit that outputs a change in the traffic rule violation information, a change in the traffic accident information, a change in the traffic volume information, or a change in the travel information of a traveling vehicle, regarding the extracted one or more registered roads; A road safety change estimation system comprising:

2. 2. The road safety change estimation system according to claim 1, characterized in that the road information includes at least one of the type of the road, the length of the road, the width of the road, the traffic rules applied to the road, and road information of other roads connected to the road.

3. 3. The road safety change estimation system according to claim 2, wherein the road information further includes at least one of the cycle of traffic lights installed on the road, the number of lanes on the road, the gradient of the road, and information on buildings around the road.

4. The road safety change estimation system as described in claim 1, characterized in that the first pre-change road information and the second pre-change road information also include a state in which the road does not exist.

5. The storage unit stores the changes in the traffic rule violation information, the changes in the traffic accident information, the changes in the traffic volume information, or the changes in the travel information of the traveling vehicle by time period or by weather, The road safety change estimation system according to claim 1, characterized in that the output unit is capable of outputting changes in the traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in the driving information of moving vehicles by time period or by weather.

6. A program executed on a computer having a memory unit that stores, for each of a plurality of registered roads, first pre-change road information before a change is made on each registered road, first post-change road information after a change is made on each registered road, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles on each registered road before and after a change is made from the first pre-change road information to the first post-change road information, and an input unit into which a user inputs current second pre-change road information of a target road and second post-change road information for which a change is being considered on the target road, extracting, from the plurality of registered roads, one or more registered roads whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more; outputting a change in the traffic rule violation information, a change in the traffic accident information, a change in the traffic volume information, or a change in the travel information of a traveling vehicle, relating to the extracted one or more registered roads; A road safety change estimation program for causing the computer to execute the above.

7. A method executed by a computer having a memory unit that stores, for each of a plurality of registered roads, first pre-change road information before a change is made on each registered road, first post-change road information after a change is made on each registered road, and changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles on each registered road before and after a change is made from the first pre-change road information to the first post-change road information, and an input unit into which a user inputs current second pre-change road information of a target road and second post-change road information for which a change is being considered on the target road, a step of the computer extracting, from among the plurality of registered roads, one or more registered roads whose first pre-change road information matches the second pre-change road information by a first predetermined value or more and whose first post-change road information matches the second post-change road information by a second predetermined value or more; a step of outputting a change in the traffic rule violation information, a change in the traffic accident information, a change in the traffic volume information, or a change in the traveling information of a traveling vehicle, regarding the extracted one or more registered roads; A method for estimating changes in road safety, comprising:

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