Road safety change estimation system

Abstract

To provide a road safety change estimation system capable of estimating a change in safety when road information of a target road is changed.SOLUTION: The safety change estimation system 1 stores the first road information before change and the first road information after change of each registered road Y, and a change in the traffic rule violation information of each registered road Y before and after the first road information before change is changed to the first road information after change. When the current second road information before change of the target road X and the second road information after change of the target road X are input, one or more registered roads for which the first road information before change matches the second road information before change by the first predetermined value or more and the first road information after change matches the second road information after change by the second predetermined value or more are extracted from the plurality of registered roads, and a change or the like in the traffic rule violation information about the extracted one or more registered roads is output.SELECTED DRAWING: Figure 5

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 facility installation location, a technique has been known in which traffic road environment information around the candidate facility installation location is extracted 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] Japanese Patent Application Publication No. 2018-142141 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 road information (traffic rules, road width, etc.) of the target road is changed.

[0005] Therefore, an object of the present invention is to provide a system for estimating a change in road safety that can estimate a change in safety when road information about 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 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] With this configuration, it is possible to grasp what kind of changes in traffic rule violation information, traffic accident information, traffic volume information, or vehicle travel information have occurred on registered roads that have undergone similar road information changes to the target road, making it possible to estimate changes in safety when the road information of the target road is changed. For example, information on changes in safety such as "When the road width of the extracted registered road was increased, parking violations increased," "When the speed limit of the extracted registered road was lowered, the number of traffic accidents remained almost the same," and "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 remained almost the same" can be obtained, making it possible to make decisions such as "Change the road information as planned," "Change to other road information," or "Cancel the change of road information."

[0008] In another aspect, the present invention provides a road safety change estimation program and a road safety change estimation method corresponding to the above road safety change estimation system. [Effects 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 explanation 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; [Figure 2] 1 is a block diagram of a safety change estimation system according to an embodiment of the present invention; [Figure 3] FIG. 1 is an explanatory diagram of a registered road according to an embodiment of the present invention; [Figure 4] FIG. 1 is an explanatory diagram of rule application positions according to an embodiment of the present invention; [Figure 5] FIG. 1 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 INVENTION

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

[0012] The safety change estimation system 1 is for estimating a change in safety due to a change in road information of a target road X (FIG. 1 shows an example in which the road width of the target road X is changed), and as shown in FIG. 2, includes a memory unit 2, an acquisition unit 3, a determination 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 a 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 conceivable to store all roads throughout 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 that apply to the road, and road information for other roads connected to the road. Note that the type of the road and the width of the road are similar pieces of information, so it may be possible to use only one of them.

[0016] Furthermore, 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 around 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, minor roads, etc.

[0019] The building information may include the height, width, depth, shape, color, distance from the road, etc. of buildings, tunnels, bridges, and other structures close to the road.

[0020] Possible changes in traffic rule violation information include changes in the number of traffic rule violations by type, changes 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 vehicles traveling by vehicle category (four-wheeled, two-wheeled, large, small, standard), changes in the number of vehicles traveling in all vehicle categories, and the like.

[0023] Possible changes in the driving information of moving vehicles include changes in the average speed and average driving tendency for each vehicle category (four-wheeled, two-wheeled, large, small, standard), 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 driving vehicles in the storage unit 2 may be automatic or manual. For example, a configuration is conceivable 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] Traffic rules may be those indicated by road signs (regulatory signs, directional signs, supplementary signs), road markings (regulatory indications, directional indications), etc., and the latitude and longitude of the rule application locations where these rules apply may be those listed in decision-making data issued by the Public Safety Commission, police stations, etc. If the decision-making data is listed as an address, it is preferable to store information in memory unit 2 in advance that has been converted into latitude and longitude for the area included in the address.

[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 applies form point set range A, the latitude and longitude of multiple rule application locations where a stop sign applies form point set range B, and the latitude and longitude of multiple rule application locations where a no parking rule applies form point set range C.

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

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

[0032] The acquisition unit 3 acquires the location information and time information transmitted from the registered vehicle Z as travel information. It is preferable to acquire the travel information sequentially over a short interval. 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 traffic volume on each registered road Y and driving information (speed, etc.) of the driving vehicles, and 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 memory unit 2 as a change in traffic volume information or a change in driving information.

[0034] The determination unit 4 determines whether the registered vehicle Z violates each traffic rule on the registered road Y based on the travel 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 traveled is determined, the traffic rules applicable to the determined registered road Y are extracted from the memory unit 2, and whether or not the registered vehicle Z has violated the rules 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, a violation is determined if the vehicle is traveling at a speed exceeding the specified speed limit by more than a specified amount in a speed limit zone (point set range A in the case of Figure 4), and in the case of a stop sign violation, a violation is determined if the vehicle does not stop for a specified period of time within a few meters before or after the stop position (point set range B in the case of Figure 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, violations of each traffic rule on each registered road Y can be obtained, and 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 memory unit 2 as a change in traffic rule violations.

[0038] The input unit 5 receives inputs of 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 a 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 Figure 1, and also to input numerical values ​​such as 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 most closely, or to extract multiple registered roads Y that match highly closely.

[0045] In this case, even if the direction of the registered road Y is different from that of the target road X on the map, if the registered road Y matches the target road X by a predetermined value or more by rotating or inverting the registered road Y, 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 required accuracy, but 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 is conceivable 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, there are few cases where an exact match occurs, so it is conceivable to set the value 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 registered roads Y whose multiple types of road information comprehensively match by at least a first predetermined value (second predetermined value). For example, it is possible to use AI to extract registered roads Y whose multiple types of road information comprehensively match by at least a first predetermined value (second predetermined value).

[0049] In addition, when multiple road information items are taken into consideration comprehensively, each road information item may be weighted. For example, building information affects sunlight on the road, but if the building has little effect on 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, which results in an infinite spread of information to be considered. 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 subsequent stages.

[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 some 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 has undergone a similar road width change.

[0052] The output unit 7 outputs changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes 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 registered road Y, which has undergone a change in road information similar to that of target road X, and thus makes it possible to estimate changes in safety when the road information of target road X is changed. For example, information on changes in safety such as "When the road width of extracted registered road Y was increased, parking violations increased," "When the speed limit of extracted registered road Y was lowered, the number of traffic accidents remained almost the same," and "When the road width of another registered road Y1 connected to extracted registered road Y was increased, the traffic volume increased, but the number of traffic accidents remained almost the same" can be obtained, making it possible to make decisions such as "Change the road information as planned," "Change to other road information," or "Cancel the change of road information."

[0054] Preferably, 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, for example, changes due to busy times (such as school commute times), sunlight, and weather, making it possible to more appropriately estimate changes in safety.

[0056] Furthermore, when the output results are displayed on a display unit (not shown), the results may be displayed in different colors according to the type of traffic rule violation, the details of the traffic accident, the vehicle classification, the time period, and the weather.

[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 a plurality of 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 from the first pre-change road information to the first post-change road information are pre-stored in memory unit 2.

[0059] First, when the 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 in the input unit 5 (S1), 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, changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in travel information of traveling vehicles relating to the extracted one or more registered roads Y are output (S3).

[0061] This allows 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 similar road information changes as target road X.

[0062] As described above, the safety change estimation system 1 according to this embodiment extracts one or more registered roads Y from among a plurality of 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, and outputs changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of traveling vehicles relating to the extracted one or more registered roads Y.

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

[0064] In addition, 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] With this 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 a more appropriate registered road Y can be 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 around the road.

[0067] With this 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 a more appropriate registered road Y can be 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 no road exists.

[0069] With this configuration, it is possible to estimate the safety of newly constructed roads.

[0070] Furthermore, in the safety change estimation system 1 according to this embodiment, the output unit 7 can output changes in traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of moving vehicles by time period or by weather.

[0071] With this configuration, it is possible to take into account, for example, changes due to the influence of busy times (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 was equipped with the acquisition unit 3 and the determination unit 4, but it may be configured not to have 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 moving vehicles that are acquired separately by other methods, etc.

[0074] In addition, in the above embodiment, the "latitude and longitude of the rule application location where the specified traffic rules are applied" of the present invention uses decision-making data issued by the Public Safety Commission, police stations, etc., 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, or to 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-transitory recording medium. Examples of non-transitory recording media include, but are not limited to, CD-ROMs.

[0077] A computer consists of a CPU, memory, and hard disk, and the program is recorded on the hard disk, expanded into memory when executed, 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 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 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 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, relating to 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, wherein 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. 2. The road safety change estimation system according to claim 1, wherein the first pre-change road information and the second pre-change road information include a state in which no road exists.

5. The storage unit stores changes in the traffic rule violation information, changes in traffic accident information, changes in traffic volume information, or changes in driving information of driving vehicles 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 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 second current 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 in which the computer extracts one or more registered roads from the plurality of registered roads, the first pre-change road information of which matches the second pre-change road information by a first predetermined value or more, and the first post-change road information of which matches the second post-change road information by a second predetermined value or more; a step in which the computer outputs a change in the traffic rule violation information, a change in traffic accident information, a change in traffic volume information, or a change in driving information of a driving vehicle, relating to the extracted one or more registered roads; A method for estimating changes in road safety, comprising:

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