Road hazard level calculation system

Abstract

To provide a road hazard level calculation system capable of appropriately calculating the safety of each target road based on traveling information of a plurality of registered vehicles on a plurality of target roads.SOLUTION: A road hazard level calculation system 1 includes: a storage unit 2 that stores road location information for each position on a plurality of target roads X and a plurality of traffic rules defined for vehicles traveling on each target road X; an acquisition unit 3 that acquires travel information for a registered vehicle Y; a determination unit 4 that determines violations of each traffic rule by the registered vehicle Y on the target road X based on the road location information, the traffic rules, and the traveling information; and a calculation unit that calculates a hazard level for each target road X based on the types of traffic rule violations determined for one or more registered vehicles Y having traveled on each target road X within a predetermined time period, and a violation rate for each type of violation on each target road X.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a road risk calculation system that can appropriately calculate the safety of each target road based on travel information of a plurality of registered vehicles on a plurality of target roads. [Background technology]

[0002] BACKGROUND ART Conventionally, there is known a technique for displaying on a map screen, together with the travel path of a vehicle, a mark indicating the type of illegal driving at the point of occurrence of the illegal driving corresponding to the selected violation information (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5602267 Summary of the Invention [Problem to be solved by the invention]

[0004] By applying the above technology, it is conceivable to create a configuration that allows users to grasp the safety of each road by displaying violation information for a large number of vehicles on a map screen.

[0005] However, road safety varies depending on, for example, the type of violation, and it is difficult for non-experts to properly grasp the safety of each road simply by viewing the type of violation.

[0006] Therefore, an object of the present invention is to provide a road risk calculation system that can appropriately calculate the safety of each target road based on the travel information of a plurality of registered vehicles on a plurality of target roads. [Means for solving the problem]

[0007] The present invention provides a road risk calculation system comprising: a memory unit that stores road position information regarding each position of a plurality of target roads and a plurality of traffic rules established for vehicles traveling on each target road; an acquisition unit that acquires driving information of registered vehicles; a judgment unit that judges violations of each traffic rule by the registered vehicles on the target road based on the road position information, the traffic rules, and the driving information; and a calculation unit that calculates the risk of each target road based on the types of violations of the traffic rules judged for one or more registered vehicles that traveled on each target road within a specified time period and the violation rate for each type of violation on each target road.

[0008] With this configuration, unlike when the types and number of traffic rule violations are simply displayed, even users who are not experts on traffic rules can properly understand the safety of each target road.

[0009] According to another aspect of the present invention, there are provided a road danger calculation program and a road danger calculation method corresponding to the road danger calculation system. [Effects of the Invention]

[0010] According to the road risk calculation system of the present invention, it is possible to appropriately calculate the safety of each target road based on the travel information of a plurality of registered vehicles on a plurality of target roads. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is an explanatory diagram of a target road according to an embodiment of the present invention; [Figure 2] Block diagram of a road risk calculation system according to an embodiment of the present invention. [Figure 3] FIG. 1 is an explanatory diagram of rule application positions according to an embodiment of the present invention; [Figure 4] FIG. 1 is an explanatory diagram of integrated or divided display of risk levels according to an embodiment of the present invention; [Figure 5] Flowchart of risk calculation according to an embodiment of the present invention DETAILED DESCRIPTION OF THE INVENTION

[0012] A road risk calculation system 1 according to an embodiment of the present invention will be described below with reference to FIGS.

[0013] As shown in FIG. 1, the road risk calculation system 1 is for appropriately calculating the safety of each target road X based on the driving information of multiple registered vehicles Y on multiple target roads X, and as shown in FIG. 2, it includes a memory unit 2, an acquisition unit 3, a determination unit 4, a calculation unit 5, a display unit 6, and an operation unit 7.

[0014] The storage unit 2 stores road position information relating to each position of a plurality of target roads X, and a plurality of traffic rules defined for vehicles traveling on each target road X. In this embodiment, each link is treated as a target road X, as shown in FIG.

[0015] The road position information may be the latitude and longitude of each target road X, and it is preferable that the storage unit 2 stores the latitude and longitude of the range that includes each target road X.

[0016] 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.

[0017] 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 3. Figure 3 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.

[0018] The acquisition unit 3 acquires the driving information of the registered vehicle Y.

[0019] In this embodiment, the registered vehicle Y is equipped with a GPS device (not shown) capable of detecting its own position, and a transmitting unit (not shown) of the registered vehicle Y is configured to be able to transmit position information regarding its own position detected by the GPS device to the road risk calculation system 1 in association with time information indicating the time of detection. The acquiring unit 3 acquires the position information and time information transmitted from the registered vehicle Y as traveling information. It is preferable to acquire the traveling information sequentially over a short interval.

[0020] In this embodiment, the road risk calculation system 1 is installed in a communication center or the like, and communication with the registered vehicle Y is performed wirelessly.

[0021] The determination unit 4 determines whether the registered vehicle Y violates each traffic rule on the target road X based on the road position information, traffic rules, and driving information.

[0022] In detail, based on the road position information stored in the memory unit 2 and the position information included in the driving information, the target road X on which the registered vehicle Y has traveled is determined, the traffic rules that apply to the determined target road X are extracted from the memory unit 2, and whether or not the registered vehicle Y has violated the rules is determined based on the extracted traffic rules and the acquired driving information.

[0023] 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 a predetermined speed limit in a speed limit zone (point set range A in the case of Figure 3), and in the case of a stop sign violation, a violation is determined if the vehicle does not stop for a predetermined period of time within a few meters before or after the stop position (point set range B in the case of Figure 3).The speed of registered vehicle Y can be calculated by dividing the distance between the two target position information points by the time between them.

[0024] The calculation unit 5 calculates the risk level of each target road X based on the types of traffic rule violations determined for one or more registered vehicles that traveled on each target road X within a specified time period and the violation rate for each type of violation on each target road X.

[0025] In detail, for example, the risk level can be calculated by multiplying, adding, etc. a first risk index that is preset for each type of violation and a second risk index that is preset for each violation rate.

[0026] Regarding the type of violation, for example, in the case of a stop sign violation that is likely to lead to a serious accident, it is conceivable to set the first risk index higher than for other types of violation. Note that the type of violation also includes the degree of violation, and for example, in the case of a speeding violation that is set in stages, it is conceivable to set the first risk index higher the greater the degree of exceedance.

[0027] Regarding the violation rate, for example, it is possible to use the ratio of the number of violations committed to the number of times one or more registered vehicles Y travel on a target road X within a specified period of time, and it is possible to set the second risk index so that the higher the violation rate, the higher it is.

[0028] For example, if only one registered vehicle Y travels on one target road X and that registered vehicle Y commits a violation, the violation rate will be 100%. In this way, in order to avoid calculating an unnecessarily high risk level when only a small number of registered vehicles Y have traveled, it is preferable to use a lower predetermined value as the second risk index when the number of times that registered vehicle Y has traveled on one target road X within a predetermined time is equal to or less than a predetermined value.

[0029] The risk level may be calculated for each type of violation, or may be the sum of the risk levels calculated for each type of violation.

[0030] As described above, the road risk calculation system 1 according to this embodiment does not simply display the types and number of traffic rule violations, but calculates the risk of each target road X based on the types of traffic rule violations on each target road X and the violation rate for each type of violation on each target road X. This allows even a user who is not an expert on traffic rules, etc., to properly grasp the safety of each target road X.

[0031] Furthermore, the calculation unit 5 calculates the risk level taking into consideration the time period or day of the week when the violation occurred, the type of the target road X, or whether or not the target road X has safety equipment.

[0032] It is conceivable that the third to fifth risk indices could be set in advance for the time of day or day of the week when the violation occurred, the type of target road X, and the presence or absence of safety equipment on target road X, and the risk could be calculated by multiplying or adding the third to fifth risk indices to the first and second risk indices.

[0033] Regarding the time of day or day of the week when the violation occurred, for example, if the violation occurred during school commute hours on a weekday, the third risk index may be set to be higher than for other times of day or days of the week.

[0034] Possible types of target road X 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 narrow roads. For example, if a violation occurs on a narrow road, the fourth risk index can be set to be higher than for other types of target road X.

[0035] The presence or absence of safety facilities on target road X may include the presence or absence of traffic lights on target road X, the presence or absence of sidewalks on target road X, the presence or absence of crosswalks on target road X, etc. For example, if a violation occurs on target road X with traffic lights, the fifth risk index may be set to be higher than that of target road X without traffic lights.

[0036] In this way, in the road risk calculation system 1 according to this embodiment, the risk is calculated taking into consideration factors that affect safety when a traffic rule is violated (such as the time of day when the violation occurred), making it possible to more appropriately grasp the safety of each target road X.

[0037] The display unit 6 can display multiple target roads X based on the road position information, and can distinguish each target road X according to the calculated risk level. Fig. 1 shows an example in which a target road X1 calculated to have a high risk level and a target road X2 calculated to have a low risk level are displayed in different colors. Alternatively, the risk level of each target road X may be distinguished by displaying numbers or letters.

[0038] With this configuration, the safety of each target road X can be visually and easily grasped.

[0039] Furthermore, in the road risk calculation system 1 according to this embodiment, the display unit 6 can change the scale of the displayed range, and as the scale is changed, the risk classifications of multiple target roads X can be integrated or divided and displayed.

[0040] For example, in the case of narrow-area display, the risk level is displayed for each target road X (link) as shown in Fig. 4(a), but in the case of wide-area display, the risk levels of multiple target roads X (links) are integrated and displayed as shown in Fig. 4(b). Note that in Fig. 4, the same target roads X are shown at the same scale in order to compare them, but in reality, Fig. 4(b) will be displayed smaller. Also, in Fig. 4, the risk levels are distinguished by numbers, but if they are distinguished by color, it is possible to integrate them using a neutral color, for example.

[0041] With this configuration, the display of the safety of each target road X is prevented from becoming complicated.

[0042] Furthermore, the display unit 6 can display multiple pieces of violation information indicating violations of traffic rules determined for each of multiple registered vehicles Y, in association with the location on the target road X where the violation occurred, but does not display the travel route of the registered vehicle Y. As violation information, stop signs and speed limit signs can be displayed together with the number of violations.

[0043] As a result, the driving trajectory of registered vehicle Y, which may be personal information, is not displayed, so that even a display screen created based on driving information can be provided to a third party.

[0044] It is preferable that the travel of registered vehicle Y is only counted, and the travel route is not stored, nor can it be restored.

[0045] The operation unit 7 is used by the user to select or input information to be displayed on the display unit 6.

[0046] By operating the operation unit 7, the user can select one or more items to be displayed (such as the above-mentioned "type of traffic rule violation," "violation rate," "time period," "day of the week," "type of target road," and "presence or absence of safety equipment on the target road").

[0047] For example, by selecting "time period" and "day of the week" and comparing each target road X displayed according to the level of danger for each time period or day of the week, it is possible to determine which target road X is safest for the desired time period or day of the week.

[0048] In addition, since parking violations can cause traffic congestion, by selecting the time period and day of the week when you plan to travel in "Time of Day" and "Day of Week," and then selecting "Parking Violation" in "Type of Traffic Rule Violation," you can identify target road X with many (or few) parking violations during the time period and day of the week when you plan to travel.

[0049] In this way, the road risk calculation system 1 can be used by the user to avoid target roads X where there are many violations of traffic rules (high risk). Furthermore, it can also be used as a reference for changing the application position of traffic rules on each target road X, installing safety equipment on each target road X, etc., depending on the risk level.

[0050] Next, the flow of control in the road risk calculation system 1 of this embodiment will be described with reference to the flowchart of FIG.

[0051] First, the travel information of the registered vehicle Y on the target road X is acquired (S1), and based on the travel information, it is determined whether the registered vehicle Y has violated any traffic rules on the target road X (S2). The processing of S1-S2 is performed for all registered vehicles Y that have traveled on each target road X.

[0052] Finally, the risk level of each target road X is calculated based on the types of traffic rule violations determined for one or more registered vehicles Y that have traveled on each target road X within a predetermined time period and the violation rate for each type of violation on each target road X (S3). At this time, it is preferable to calculate the risk level taking into consideration the time of day or day of the week when the violation occurred, the type of target road X, or the presence or absence of safety equipment on the target road X.

[0053] The display unit 6 can distinguish and display each target road X according to the risk level calculated in this way.

[0054] As described above, the road risk calculation system 1 according to this embodiment calculates the risk of each target road X based on the types of traffic rule violations on each target road X and the violation rate for each type of violation on each target road X.

[0055] With this configuration, unlike when the types and number of traffic rule violations are simply displayed, even a user who is not an expert on traffic rules can properly understand the safety of each target road X.

[0056] Furthermore, the road risk calculation system 1 according to this embodiment calculates the risk taking into consideration the time of day or day of the week when the violation occurred, the type of the target road X, or whether or not the target road X has safety equipment.

[0057] With this configuration, the risk level is calculated taking into account factors that affect safety when a traffic rule is violated (such as the time of day when the violation occurred), making it possible to more appropriately grasp the safety of each target road X.

[0058] Furthermore, in the road risk calculation system 1 according to this embodiment, the display unit 6 can display a plurality of target roads X based on road position information, and can distinguish and display each target road X according to the calculated risk.

[0059] According to this configuration, the safety of each target road X can be visually and easily grasped.

[0060] Furthermore, in the road risk calculation system 1 according to this embodiment, the display unit 6 is capable of displaying multiple pieces of violation information indicating violations of traffic rules determined for each of multiple registered vehicles Y, each associated with the location on the target road X where the violation occurred, but does not display the travel route of the registered vehicle Y.

[0061] With this configuration, the driving trajectory of registered vehicle Y, which could be personal information, is not displayed, so even a display screen created based on driving information can be provided to a third party.

[0062] Furthermore, in the road risk calculation system 1 according to this embodiment, the display unit 6 can change the scale of the displayed range, and as the scale is changed, it is possible to combine or separate the classifications according to the risk levels of multiple target roads X and display them.

[0063] According to this configuration, the display of the safety of each target road X is prevented from becoming complicated.

[0064] The road risk calculation 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.

[0065] For example, in the above embodiment, the display unit 6 displays each target road X distinguishably according to its degree of danger. However, it is not necessary to display each target road X, and it is possible to appropriately grasp the safety of each target road X simply by calculating the degree of danger of each target road X.

[0066] Furthermore, in the above embodiment, weather information may also be selectable on the operation unit 7. In this case, for example, it may be possible to calculate a higher risk on a rainy day than on a sunny day.

[0067] In the above embodiment, accident information may also be taken into consideration. For example, it may be possible to further add a risk level for a target road X where an accident has occurred or a target road X with a high accident rate.

[0068] 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.

[0069] 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.

[0070] The present invention can also be applied to a program corresponding to the processing performed by the road risk calculation system 1, 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. A CD-ROM or the like can be considered as a non-transitory recording medium, but is not limited to this.

[0071] 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]

[0072] 1 Road Risk Calculation System 2 Storage section 3 Acquisition part 4 Judgment section 5 Calculation section 6 Display section 7 Control section X Target road Y registered vehicle

Claims

1. a storage unit that stores road position information relating to each position of a plurality of target roads and a plurality of traffic rules defined for vehicles traveling on each target road; an acquisition unit that acquires driving information of registered vehicles; a determination unit that determines whether the registered vehicle violates each traffic rule on the target road based on the road position information, the traffic rule, and the driving information; a calculation unit that calculates the risk level of each target road based on the types of violations of traffic rules determined for one or more of the registered vehicles that have traveled on each target road within a predetermined time period and the violation rate for each type of violation on each target road; A road risk calculation system comprising:

2. The road danger calculation system described in claim 1, characterized in that the calculation unit calculates the danger level by taking into account the time of day or day of the week when the violation occurred, the type of the target road, or the presence or absence of safety equipment on the target road.

3. The road risk calculation system according to claim 1, further comprising a display unit capable of displaying the plurality of target roads based on the road position information and capable of distinguishing and displaying each target road according to the risk level.

4. The road risk calculation system described in claim 3, characterized in that the display unit is capable of displaying multiple violation information indicating violations of traffic rules determined for each of the multiple registered vehicles, each associated with the location on the target road where the violation occurred, but does not display the driving route of the registered vehicle.

5. The road danger calculation system described in claim 3, characterized in that the display unit is capable of changing the scale of the displayed range, and in accordance with the change in scale, is capable of integrating or dividing the distinctions according to the danger levels of the multiple target roads and displaying them.

6. A program executed by a computer that stores road position information relating to each position of a plurality of target roads and a plurality of traffic rules defined for vehicles traveling on each of the target roads, acquiring driving information of registered vehicles on the target road; determining whether the registered vehicle violates each traffic rule on the target road based on the road position information, the traffic rule, and the driving information; calculating a risk level of each target road based on the types of violations of traffic rules determined for one or more registered vehicles that have traveled on each target road within a predetermined time period and the violation rate for each type of violation on each target road; A road risk calculation program comprising:

7. A method executed by a computer that stores road position information relating to each position of a plurality of target roads and a plurality of traffic rules defined for vehicles traveling on each of the target roads, the method comprising: acquiring driving information of registered vehicles on the target road; determining whether the registered vehicle violates each traffic rule on the target road based on the road position information, the traffic rule, and the driving information; calculating a risk level of each target road based on the types of violations of traffic rules determined for one or more registered vehicles that have traveled on each target road within a predetermined time period and the violation rate for each type of violation on each target road; A road risk calculation method comprising:

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