Vehicle rear-end collision accident liability determination method and device, server and storage medium

Abstract

The invention discloses a vehicle rear-end collision accident liability determination method and device, a server and a storage medium. The method comprises the steps that in a rear-end collision accident of at least three vehicles, every three adjacent vehicles in the at least three vehicles serve as a rear-end collision vehicle group according to the sequence from back to front; determining the first time of the first collision and the second time of the last collision when the collision intensity of three vehicles in each rear-end vehicle group is greater than a preset intensity threshold value; determining the sequence of the first collision of the middle vehicle and the first collision of the next vehicle in a target time period with the first time as a starting point and the second time as an ending point, and determining the initial responsibility ratio of each vehicle in the rear-end vehicle group according to the sequence and the two collision intensities of the middle vehicle in the target time period; and calculating a target responsibility ratio of each vehicle according to the initial responsibility ratio of each vehicle in each rear-end vehicle group. According to the scheme, the responsibility of the rear-end collision accident of at least three vehicles can be accurately defined.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accident liability determination, and particularly to a method, device, server and storage medium for determining liability in a vehicle rear-end collision accident. Background Art

[0002] With the increase in the number of automobiles, vehicle accidents on road traffic have also increased, posing challenges to the efficiency and difficulty of traffic police in determining liability. Although most vehicle owners will choose to install driving recorders, which also provide evidence for traffic police to assist in determining liability. However, it is still relatively difficult to define the liability in a rear-end collision accident involving three or more vehicles, and it is difficult to determine whether the accident was caused by the last vehicle or which vehicle in the middle. Summary of the Invention

[0003] The present invention provides a method, device, server and storage medium for determining liability in a vehicle rear-end collision accident, which can accurately define the liability in a rear-end collision accident involving at least three vehicles.

[0004] According to one aspect of the present invention, there is provided a method for determining liability in a vehicle rear-end collision accident, including:

[0005] In a rear-end collision accident involving at least three vehicles, in the order from the rear to the front, each adjacent three vehicles among the at least three vehicles are used as a rear-end vehicle group;

[0006] Determine the first time of the first collision and the second time of the last collision of the three vehicles in each rear-end vehicle group whose collision intensity is greater than a preset intensity threshold;

[0007] Determine the sequence of the first collision of the middle vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability proportion of each vehicle in the rear-end vehicle group according to the sequence and the collision intensities of the middle vehicle in the front and rear within the target time period;

[0008] Calculate the target liability proportion of each vehicle in the rear-end collision accident involving at least three vehicles according to the initial liability proportion of each vehicle in each rear-end vehicle group.

[0009] According to another aspect of the present invention, there is provided a device for determining liability in a vehicle rear-end collision accident, including:

[0010] A rear-end vehicle group division module, configured to, in a rear-end collision accident involving at least three vehicles, in the order from the rear to the front, use each adjacent three vehicles among the at least three vehicles as a rear-end vehicle group;

[0011] A collision time determination module, configured to determine the first time of the first collision and the second time of the last collision of the three vehicles in each rear-end vehicle group whose collision intensity is greater than a preset intensity threshold;

[0012] An initial liability ratio determination module, configured to determine the sequence of the first collision of the intermediate vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability ratio of each vehicle in the rear-end collision vehicle group according to the sequence and the collision intensities of the intermediate vehicle in the target time period in two consecutive collisions;

[0013] A target liability ratio calculation module, configured to calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group.

[0014] According to another aspect of the present invention, there is provided a server, including:

[0015] At least one processor; and

[0016] A memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor is enabled to execute the vehicle rear-end collision accident liability determination method according to any embodiment of the present invention.

[0018] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for enabling a processor to implement the vehicle rear-end collision accident liability determination method according to any embodiment of the present invention when executed.

[0019] In the vehicle rear-end collision accident liability determination solution of the embodiments of the present invention, in a rear-end collision accident of at least three vehicles, each adjacent three vehicles among the at least three vehicles are used as a rear-end collision vehicle group in the order from the rear to the front; determine the first time of the first collision and the second time of the last collision in which the collision intensities of the three vehicles in each rear-end collision vehicle group are greater than a preset intensity threshold; determine the sequence of the first collision of the intermediate vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability ratio of each vehicle in the rear-end collision vehicle group according to the sequence and the collision intensities of the intermediate vehicle in the target time period in two consecutive collisions; calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group. Through the technical solution provided by the embodiments of the present invention, the liability of a rear-end collision accident of at least three vehicles can be accurately defined, and the efficiency of accident liability determination processing can be improved.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a flowchart of a method for determining liability for vehicle rear-end accidents provided in Embodiment 1 of the present invention;

[0023] Figure 2 is a flowchart of a method for determining liability for vehicle rear-end accidents provided in Embodiment 2 of the present invention;

[0024] Figure 3 is a schematic structural diagram of a device for determining liability for vehicle rear-end accidents provided in Embodiment 3 of the present invention;

[0025] Figure 4 is a schematic structural diagram of a server for implementing the method for determining liability for vehicle rear-end accidents in the embodiments of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0028] Example 1

[0029] Figure 1 FIG. 141 is a flowchart of a method for determining liability in a vehicle rear - end collision accident provided by Example 1 of the present invention. This example is applicable to the situation of determining liability for vehicle rear - end collision accidents. This method can be executed by a vehicle rear - end collision accident liability determination device, which can be implemented in the form of hardware and / or software, and can be configured in a server. As Figure 1 shown, the method includes:

[0030] S110. In a rear - end collision accident of at least three vehicles, in the order from the rear to the front, each adjacent three vehicles among the at least three vehicles are used as a rear - end collision vehicle group.

[0031] In the embodiment of the present invention, in a rear - end collision accident of at least three vehicles (three or more vehicles), in the order from the rear to the front, each adjacent three vehicles among the at least three vehicles are used as a rear - end collision vehicle group. Exemplarily, the vehicles in the rear - end collision accident can be represented in the order from the front to the rear as (C 1 , C 2 , C 3 , …, C N ), where N is an integer greater than or equal to 3. In the order from the rear to the front, the rear - end collision vehicle groups divided from N vehicles are respectively C N-2 C N-1 C N , C N-3 C N-2 C N-1 , …, C 2 C 3 C 4 , C 1 C 2 C 3 . For example, if the vehicles in the rear - end collision accident are A, B, C, D, E, F in the order from the front to the rear, then in the order from the rear to the front, the rear - end collision vehicle groups divided from 6 vehicles are respectively DEF, CDE, BCD, and ABC.

[0032] S120. Determine the first time of the first collision and the second time of the last collision in which the collision intensity of the three vehicles in each rear - end collision vehicle group is greater than a preset intensity threshold.

[0033] In a rear-end collision accident involving at least three vehicles, each vehicle may experience multiple collisions. In an embodiment of the present invention, for each rear-end collision vehicle group, the time of the first collision and the time of the last collision in which the collision intensity of the three vehicles in the rear-end collision vehicle group is greater than a preset intensity threshold are determined. For the convenience of description, the time of the first collision in which the collision intensity of the three vehicles in the rear-end collision vehicle group is greater than the preset intensity threshold is referred to as the first time, and the time of the last collision in which the collision intensity of the three vehicles in the rear-end collision vehicle group is greater than the preset intensity threshold is referred to as the second time. Specifically, the collision time of the three vehicles in the rear-end collision vehicle group and the collision intensity corresponding to each collision time can be statistically determined, and a target collision intensity greater than the preset intensity threshold is screened out from all collision intensities in the rear-end collision vehicle group, and the earliest time among the collision times corresponding to the target collision intensity is taken as the first time, and the latest time among the collision times corresponding to the target collision intensity is taken as the second time.

[0034] It should be noted that in a rear-end collision involving at least three vehicles, the collision time, number of collisions and collision intensity of each vehicle can be obtained through the vehicle's built-in driving recorder, wherein the driving recorder is equipped with a vibration sensor and a gravity sensor. Among them, the vibration sensor can detect the vibration amplitude, vibration frequency and vibration direction of the vehicle in real time. The intensity of each collision of each vehicle can be the maximum acceleration amplitude generated by the vibration sensor at each collision of the vehicle. Among them, in order to eliminate the interference of the up and down vibration of the vehicle caused by gravel and inequality on the road surface, the maximum acceleration amplitude of the vehicle in the horizontal direction that is greater than the preset amplitude threshold can be used as the collision intensity of the vehicle.

[0035] The time displayed on the dashcam of each vehicle may be inconsistent. Therefore, when it is determined that at least three vehicles have a rear-end collision, the current time displayed on the dashcam of each vehicle is determined. x and the current reference time T 基准 , and calculate the time difference between the current display time and the current reference time ΔT = T x -T 基准。When determining the first time of the first collision with a collision intensity greater than the preset intensity threshold among the three vehicles in the rear-end collision vehicle group, the second time of the last collision, the first collision time of the middle vehicle, and the first collision time of the subsequent vehicle, the time recorded on the driving recorder of each vehicle is adjusted based on the time difference ΔT. Exemplarily, the current reference time is 10-13 12:00:00.000, and the current display times on the driving recorders of vehicle A, vehicle B, and vehicle C are 10-13 11:45:00.000, 10-13 12:00:00.000, and 10-13 12:05:00.000 respectively. Then the time differences between the current display times on the driving recorders of vehicle A, vehicle B, and vehicle C and the current reference time are: -15 minutes, 0, and 5 minutes respectively. Then, based on the time difference corresponding to each vehicle, the collision time recorded on the driving recorder of that vehicle is adjusted.

[0036] S130. Determine the order of the first collision of the middle vehicle and the first collision of the subsequent vehicle within the target time period starting from the first time and ending at the second time, and determine the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the order and the collision intensities of the middle vehicle in the two collisions before and after within the target time period.

[0037] In the embodiment of the present invention, for each rear-end collision vehicle group, determine the time of the first collision of the middle vehicle in the rear-end collision vehicle group and the time of the first collision of the subsequent vehicle in the rear-end collision vehicle group within the target time period starting from the first time corresponding to the rear-end collision vehicle group and ending at the second time corresponding to the rear-end collision vehicle group. Then, according to the time of the first collision of the middle vehicle in the rear-end collision vehicle group and the time of the first collision of the subsequent vehicle in the rear-end collision vehicle group, determine the order of the first collision of the middle vehicle and the first collision of the subsequent vehicle. Determine the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the order of the first collisions of the middle vehicle and the subsequent vehicle in the rear-end collision vehicle group and the collision intensities of the middle vehicle in the two collisions before and after within the target time period.

[0038] Optionally, determining the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the order and the collision intensities of the middle vehicle in the two collisions before and after within the target time period includes: when the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, determine the number of collisions of the previous vehicle within the target time period; determine the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the number of collisions and the collision intensities of the middle vehicle in the two collisions before and after within the target time period.

[0039] Exemplarily, for a certain group of rear-end vehicles, within the target time period corresponding to the group of rear-end vehicles, when the first collision time of the middle vehicle in the group of rear-end vehicles is earlier than the first collision time of the subsequent vehicle, it indicates that the vehicle rear-end situation in the group of rear-end vehicles is: the middle vehicle first hits the preceding vehicle, and then the subsequent vehicle hits the middle vehicle. At this time, determine the number of collisions of the preceding vehicle in the group of rear-end vehicles within the target time period, and determine the initial liability ratio of each vehicle in the group of rear-end vehicles according to the number of collisions of the preceding vehicle within the target time period and the collision intensities of the middle vehicle in the front and rear within the target time period.

[0040] Optionally, determining the initial liability ratio of each vehicle in the group of rear-end vehicles according to the number of collisions and the collision intensities of the middle vehicle in the front and rear within the target time period includes: when it is determined according to the number of collisions that the preceding vehicle has one collision, determine that the rear-end collision between the middle vehicle and the preceding vehicle is the liability of the middle vehicle, and determine the initial liability ratio between the subsequent vehicle and the middle vehicle during the rear-end collision between the subsequent vehicle and the middle vehicle according to the collision intensities of the middle vehicle in the front and rear within the target time period. Exemplarily, when the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, and the preceding vehicle has one collision within the target time period, it indicates that the middle vehicle first hits the preceding vehicle, causing the collision of the preceding vehicle, and when the subsequent vehicle hits the middle vehicle again, it will not cause the middle vehicle to hit the preceding vehicle again. At this time, determine that the rear-end collision between the middle vehicle and the preceding vehicle is the liability of the middle vehicle. The liability determination for the subsequent vehicle hitting the middle vehicle can be determined according to the collision intensities of the middle vehicle in the front and rear within the target time period. Specifically, determine the collision intensity of the middle vehicle in the previous collision and the subsequent collision within the target time period, calculate the total collision intensity of the middle vehicle in the previous collision and the subsequent collision within the target time period, and take the percentage of the collision intensity of the middle vehicle in the previous collision within the target time period to the total collision intensity as the initial liability ratio of the middle vehicle during the rear-end collision between the subsequent vehicle and the middle vehicle, and take the percentage of the collision intensity of the middle vehicle in the subsequent collision within the target time period to the total collision intensity as the initial liability ratio of the subsequent vehicle during the rear-end collision between the subsequent vehicle and the middle vehicle. It can be understood that when the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, if the preceding vehicle has one collision, then the rear-end collision between the middle vehicle and the preceding vehicle is the liability of the middle vehicle, and the ratio of the initial liability ratio between the middle vehicle and the subsequent vehicle during the rear-end collision between the subsequent vehicle and the middle vehicle is the same as the ratio of the collision intensities of the middle vehicle in the front and rear within the target time period.

[0041] Optionally, determining the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the number of collisions and the collision intensities of the middle vehicle in the two consecutive collisions within the target time period includes: when it is determined according to the number of collisions that the previous vehicle has two collisions, calculating the total collision intensity of the previous collision intensity and the subsequent collision intensity of the middle vehicle within the target time period; taking the percentage of the previous collision intensity to the total collision intensity as the initial liability proportion of the middle vehicle in the rear-end collision vehicle group, and taking the percentage of the subsequent collision intensity to the total collision intensity as the initial liability proportion of the subsequent vehicle in the rear-end collision vehicle group. Exemplarily, when the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, and the previous vehicle has two collisions within the target time period, it indicates that the middle vehicle first collided with the previous vehicle, causing the previous vehicle to collide, and when the subsequent vehicle collided with the middle vehicle, it caused the middle vehicle to collide with the previous vehicle again. At this time, according to the collision intensities of the middle vehicle in the two consecutive collisions within the target time period, the initial liability proportions of the middle vehicle and the subsequent vehicle in the rear-end collision vehicle group are determined. Specifically, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity of the middle vehicle within the target time period, take the percentage of the previous collision intensity to the total collision intensity as the initial liability proportion of the middle vehicle in the rear-end collision vehicle group, and take the percentage of the subsequent collision intensity to the total collision intensity as the initial liability proportion of the subsequent vehicle in the rear-end collision vehicle group. It can be understood that when the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, if the previous vehicle has two collisions, the ratio of the initial liability proportions of the middle vehicle and the subsequent vehicle in the rear-end collision vehicle group is the same as the ratio of the collision intensities of the middle vehicle in the two consecutive collisions within the target time period.

[0042] Optionally, determining the initial liability proportion of each vehicle in the rear-end collision vehicle group according to the sequence and the collision intensities of the middle vehicle in the two consecutive collisions within the target time period includes: when the first collision time of the middle vehicle within the target time period is the same as the first collision time of the subsequent vehicle, determining the initial liability proportions of the middle vehicle and the subsequent vehicle in the rear-end collision vehicle group according to the collision intensities of the middle vehicle in the two consecutive collisions within the target time period.

[0043] In an embodiment of the present invention, within the target time period corresponding to the rear-end vehicle group, when the first collision time of the middle vehicle in the rear-end vehicle group is the same as the first collision time of the subsequent vehicle, it indicates that the vehicle rear-end situation in the rear-end vehicle group is as follows: the subsequent vehicle first hits the middle vehicle, and then the middle vehicle hits the previous vehicle. At this time, determine the previous collision intensity and the subsequent collision intensity of the middle vehicle in the rear-end vehicle group within the corresponding target time period, and determine the initial liability ratio between the middle vehicle and the subsequent vehicle in the rear-end vehicle group according to the collision intensities of the two times before and after.

[0044] Optionally, determining the initial liability ratio between the middle vehicle and the subsequent vehicle in the rear-end vehicle group according to the collision intensities of the middle vehicle before and after within the target time period includes: when the previous collision intensity of the middle vehicle within the target time period is greater than the subsequent collision intensity, determine that the subsequent vehicle in the rear-end vehicle group is fully liable; when the previous collision intensity of the middle vehicle within the target time period is less than the subsequent collision intensity, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity; take the percentage of the previous collision intensity and the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end vehicle group, and take the percentage of the subsequent collision intensity and the total collision intensity as the initial liability ratio of the middle vehicle in the rear-end vehicle group.

[0045] Exemplarily, when the first collision time of the middle vehicle is the same as that of the subsequent vehicle within the target time period, if the collision intensity of the middle vehicle in the previous collision within the target time period is greater than that in the subsequent collision, it indicates that the subsequent vehicle first collided heavily with the middle vehicle, and then the middle vehicle collided gently with the previous vehicle. At this time, it is determined that the subsequent vehicle is fully responsible in the rear-end collision vehicle group, that is, the initial liability ratio of the subsequent vehicle is 100%, while the initial liability ratio of the middle vehicle is 0. When the first collision time of the middle vehicle is the same as that of the subsequent vehicle within the target time period, if the collision intensity of the middle vehicle in the previous collision within the target time period is less than that in the subsequent collision, it indicates that the subsequent vehicle first collided gently with the middle vehicle, and then the middle vehicle collided heavily with the previous vehicle. At this time, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity of the middle vehicle within the target time period, and take the percentage of the previous collision intensity to the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end collision vehicle group, and take the percentage of the subsequent collision intensity to the total collision intensity as the initial liability ratio of the middle vehicle in the rear-end collision vehicle group. It can be understood that when the first collision time of the middle vehicle is the same as that of the subsequent vehicle within the target time period, if the collision intensity of the middle vehicle in the previous collision within the target time period is less than that in the subsequent collision, then the ratio of the initial liability ratios of the middle vehicle and the subsequent vehicle in the rear-end collision vehicle group is the reciprocal of the ratio of the collision intensities of the middle vehicle in the previous and subsequent collisions within the target time period.

[0046] S140. Calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group.

[0047] Exemplarily, in the order from the subsequent vehicle to the previous vehicle of the rear-end collision vehicle group, calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle. For example, in the rear-end collision accident of four vehicles A, B, C, and D, in the order from the subsequent vehicle to the previous vehicle, the rear-end collision vehicle groups divided for vehicles A, B, C, and D are BCD and ABC. If it is determined that the initial liability ratio of vehicle C in the rear-end collision vehicle group BCD is 40%, the initial liability ratio of vehicle D is 60%, the initial liability ratio of vehicle B in the rear-end collision vehicle group ABC is 0, and the initial liability ratio of vehicle C is 100%, then in the rear-end collision accident of four vehicles A, B, C, and D, the target liability ratio of vehicle B is 0, the initial liability ratio of vehicle C is 40%, and the initial liability ratio of vehicle D is 60%.

[0048] Optionally, according to the initial liability proportion of each vehicle in each of the rear-end vehicle groups, calculate the target liability proportion of each vehicle in the rear-end accident of the at least three vehicles, including: calculating the average value of the initial liability proportion of each vehicle in the rear-end accident of the at least three vehicles according to the initial liability proportion of each vehicle in each of the rear-end vehicle groups; taking the average value of the initial liability proportion of each vehicle in the rear-end accident of the at least three vehicles as the target liability proportion of the corresponding vehicle. Exemplarily, in a rear-end accident of N vehicles, in the order from the rear to the front, the N vehicles can be divided into N - 2 rear-end vehicle groups. If the initial liability proportion of a certain vehicle in the i-th rear-end vehicle group is S i , then in the rear-end accident of N vehicles, the target liability proportion of this vehicle is For example, in a rear-end accident of four vehicles A, B, C, and D, in the order from the rear to the front, the rear-end vehicle groups divided by the vehicles A, B, C, and D are BCD and ABC. If it is determined that the initial liability proportion of vehicle C in the rear-end vehicle group BCD is 60%, and the initial liability proportion of vehicle D is 40%, and in the rear-end vehicle group ABC, the liability of vehicle C, that is, the initial liability proportion of vehicle B is 0, and the initial liability proportion of vehicle C is 100%, then in the rear-end accident of the four vehicles A, B, C, and D, the target liability proportion of vehicle B is 0, the initial liability proportion of vehicle C is (60% + 100%) / 2 = 80%, and the initial liability proportion of vehicle D is (40% + 0) / 2 = 20%.

[0049] In the method for determining liability for vehicle rear-end accidents according to the embodiments of the present invention, in a rear-end accident of at least three vehicles, in the order from the rear to the front, each adjacent three vehicles among the at least three vehicles are used as a rear-end vehicle group; determine the first time of the first collision and the second time of the last collision of the three vehicles in each rear-end vehicle group, where the collision intensity is greater than a preset intensity threshold; determine the sequence of the first collision of the middle vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and according to the sequence and the collision intensities of the middle vehicle in the front and rear two times within the target time period, determine the initial liability proportion of each vehicle in the rear-end vehicle group; calculate the target liability proportion of each vehicle in the rear-end accident of the at least three vehicles according to the initial liability proportion of each vehicle in each of the rear-end vehicle groups. Through the technical solution provided by the embodiments of the present invention, the liability for a rear-end accident of at least three vehicles can be accurately defined, and the efficiency of accident liability determination processing can be improved.

[0050] In some embodiments, before calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each of the rear-end vehicle groups, it further includes: determining whether there is a target rear-end vehicle group among all the rear-end vehicle groups; wherein, the target rear-end vehicle group is a rear-end vehicle group in which the first collision time of the middle vehicle is earlier than the first collision time of the subsequent vehicle within the target time period, and the number of collisions of the preceding vehicle within the target time period is one; when there is the target rear-end vehicle group among all the rear-end vehicle groups, taking the middle vehicle in the target rear-end vehicle group as a demarcation point, dividing the rear-end collision accident of at least three vehicles into sub-rear-end collision accidents; calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each of the rear-end vehicle groups, including: calculating the target liability ratio of each vehicle in the sub-rear-end collision accident according to the initial liability ratio of each vehicle in each of the rear-end vehicle groups in the sub-rear-end collision accident.

[0051] In the embodiments of the present invention, when the first collision time of the middle vehicle is earlier than the first collision time of the subsequent vehicle within the target time period, and the preceding vehicle collides once within the target time period, it indicates that the middle vehicle first collides with the preceding vehicle, causing the collision of the preceding vehicle, and when the subsequent vehicle then collides with the middle vehicle, it will not cause the middle vehicle to collide with the preceding vehicle again. The rear-end vehicle group that meets the above conditions is used as the target rear-end vehicle group. When there is a target rear-end vehicle group among all the rear-end vehicle groups, taking the middle vehicle group in the target rear-end vehicle group as a demarcation point, dividing the rear-end collision accident of N vehicles into at least two sub-rear-end collision accidents. Then, for each sub-rear-end collision accident, according to the initial liability ratio of each vehicle in each of the rear-end vehicle groups involved in the sub-rear-end collision accident, calculate the target liability ratio of each vehicle in the sub-rear-end collision accident. For example, in the rear-end collision accident of five vehicles A, B, C, D, and E, in the order from the rear to the front, the rear-end vehicle groups divided for vehicles A, B, C, D, and E are CDE, BCD, and ABC. If the rear-end vehicle group BCD is the target rear-end vehicle group in which the first collision time of the middle vehicle is earlier than the first collision time of the subsequent vehicle within the target time period, and the number of collisions of the preceding vehicle within the target time period is one, then taking vehicle C as a demarcation point, dividing the rear-end collision accident of five vehicles A, B, C, D, and E into a sub-rear-end collision accident of vehicles A, B, C and a sub-rear-end collision accident of vehicles C, D, E. Determine the target initial liability ratio of each vehicle in the sub-rear-end collision accident of vehicles A, B, C according to the rear-end vehicle group ABC, and determine the target initial liability ratio of each vehicle in the sub-rear-end collision accident of vehicles B, C, D according to the rear-end vehicle group BCD.

[0052] Optionally, before calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each of the rear-end vehicle groups, it further includes: determining whether there are at least two consecutive full-liability rear-end vehicle groups among all the rear-end vehicle groups, where a full-liability rear-end vehicle group is a rear-end vehicle group in which the subsequent vehicle is fully liable. If so, merging the at least two consecutive full-liability rear-end vehicle groups into an overall rear-end vehicle group, and determining that the last vehicle in the overall rear-end vehicle group is fully liable, while the other vehicles in the overall rear-end vehicle group are not liable. Then, according to the initial liability ratio of each vehicle in the other rear-end vehicle groups and the liability division result of the overall rear-end vehicle group, calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles. For example, in the rear-end collision accident of six vehicles A, B, C, D, E, and F, in the order from the rear to the front, the rear-end vehicle groups divided for vehicles A, B, C, D, E, and F are DEF, CDE, BCD, and ABC. If vehicle E is fully liable in the rear-end vehicle group CDE and vehicle D is fully liable in the rear-end vehicle group BCD, then merge the rear-end vehicle groups CDE and BCD into the overall rear-end vehicle group BCED, and determine that vehicle D in the overall rear-end vehicle group is fully liable. Then, according to the initial liability ratio of each vehicle in the rear-end vehicle groups ABC, DEF, and the overall rear-end vehicle group, calculate the target liability ratio of each vehicle in the rear-end collision accident of six vehicles A, B, C, D, E, and F.

[0053] Embodiment 2

[0054] Figure 2 The flowchart of a method for determining liability in a vehicle rear-end collision accident provided by Embodiment 2 of the present invention is as Figure 2 shown, and this method includes:

[0055] S210. In a rear-end collision accident of at least three vehicles, take every three adjacent vehicles among the at least three vehicles as a rear-end vehicle group in the order from the rear to the front.

[0056] S220. Determine the first time of the first collision and the second time of the last collision of the three vehicles in each rear-end vehicle group, where the collision intensity of the three vehicles is greater than the preset intensity threshold.

[0057] S230. Determine whether the first collision time of the middle vehicle is earlier than the first collision time of the subsequent vehicle within the target time period starting from the first time and ending at the second time. If so, execute S240; otherwise, execute S280.

[0058] S240. Determine the number of collisions of the previous vehicle within the target time period.

[0059] S250. When it is determined that the preceding vehicle has collided once based on the number of collisions, it is determined that the middle vehicle's rear-ending of the preceding vehicle is the responsibility of the middle vehicle. According to the collision intensities of the middle vehicle in two consecutive collisions within the target time period, the initial responsibility ratio of the following vehicle and the middle vehicle during the rear-ending process between the following vehicle and the middle vehicle is determined, and this group of rear-ending vehicles is marked.

[0060] Exemplarily, for vehicle C 1 、C 2 、C 3 、…、C N in a rear-ending accident, N vehicles are divided into C N-2 C N-1 C N 、C N- 3 C N-2 C N-1 、…、C 2 C 3 C 4 、C 1 C 2 C 3 a total of N - 2 groups of rear-ending vehicles. For example, for the group of rear-ending vehicles C N-2 C N-1 C N , if the first collision time of the middle vehicle C N-1 is earlier than the first collision time of the following vehicle C N , and the preceding vehicle C N-2 collides once within the target time period, it is determined that the middle vehicle C N-1 's rear-ending of the preceding vehicle C N-2 is the responsibility of the middle vehicle. According to the collision intensities of the middle vehicle C N-1 in two consecutive collisions within the target time period, the initial responsibility ratio of the following vehicle C N and the middle vehicle C N-1 during the rear-ending process between the following vehicle C N and the middle vehicle C N-1 is determined, and this group of rear-ending vehicles is marked.

[0061] S260. When it is determined that the preceding vehicle has collided twice based on the number of collisions, calculate the total collision intensity of the middle vehicle's previous collision intensity and subsequent collision intensity within the target time period.

[0062] S270. Take the percentage of the previous collision intensity to the total collision intensity as the initial responsibility ratio of the middle vehicle in the group of rear-ending vehicles, and take the percentage of the subsequent collision intensity to the total collision intensity as the initial responsibility ratio of the following vehicle in the group of rear-ending vehicles.

[0063] Exemplarily, for the group of rear-ending vehicles C N-2 CN-1 C N If the first collision time of the middle vehicle C N-1 is earlier than that of the subsequent vehicle C N and the previous vehicle C N-2 collides twice within the target time period, if the collision intensity of the previous collision of the middle vehicle within the target time period is 6 and the collision intensity of the subsequent collision is 4, then it is determined that in the rear-end collision vehicle group C N-2 C N- 1 C N the initial liability ratio of the middle vehicle C N-1 is 60%, and the initial liability ratio of the subsequent vehicle C N is 40%.

[0064] S280. Determine whether the collision intensity of the previous collision of the middle vehicle within the target time period is greater than that of the subsequent collision. If so, execute S290; otherwise, execute S2100.

[0065] S290. Determine that the subsequent vehicle is fully liable in the rear-end collision vehicle group.

[0066] S2100. Calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity.

[0067] S2110. Use the percentage of the previous collision intensity to the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end collision vehicle group, and use the percentage of the subsequent collision intensity to the total collision intensity as the initial liability ratio of the middle vehicle in the rear-end collision vehicle group.

[0068] Exemplarily, within the target time period starting from the first time and ending at the second time, the first collision time of the middle vehicle cannot be later than that of the subsequent vehicle. Therefore, when the first collision time of the middle vehicle within the target time period is not earlier than that of the subsequent vehicle, it means that the first collision time of the middle vehicle within the target time period is the same as that of the subsequent vehicle, that is, the first collisions of the middle vehicle and the subsequent vehicle occur simultaneously within the target time period. At this time, determine the collision intensity of the previous collision and the subsequent collision of the middle vehicle within the target time period. For example, for the rear-end collision vehicle group C N-2 C N-1 C N If the collision intensity of the previous collision of the middle vehicle C N-1 within the target time period is 6 and the subsequent collision intensity is 4, it indicates that the collision intensity of the previous collision of the middle vehicle C N-1 within the target time period is greater than that of the subsequent collision. At this time, determine that in the rear-end collision vehicle group C N-2 C N-1 C N the subsequent vehicle CN Bear full responsibility. If the middle vehicle C N-1 has a previous collision intensity of 4 and a subsequent collision intensity of 6 within the target time period, it indicates that the middle vehicle C N-1 has a previous collision intensity less than the subsequent collision intensity within the target time period. At this time, it is determined that in the rear-end vehicle group C N-2 C N-1 C N the initial liability ratio of the middle vehicle C N-1 is 60%, and the initial liability ratio of the subsequent vehicle is 40%.

[0069] S2120. Determine whether there is a marked target rear-end vehicle group among all rear-end vehicle groups. If so, execute S2130; otherwise, execute S2150.

[0070] S2130. When there is a target rear-end vehicle group among all rear-end vehicle groups, take the middle vehicle in the target rear-end vehicle group as the demarcation point and divide the rear-end accident of at least three vehicles into sub-rear-end accidents.

[0071] S2140. Calculate the target liability ratio of each vehicle in the sub-rear-end accident according to the initial liability ratio of each vehicle in each rear-end vehicle group in the sub-rear-end accident.

[0072] S2150. Calculate the target liability ratio of each vehicle in the rear-end accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end vehicle group.

[0073] The vehicle rear-end accident liability determination method according to the embodiment of the present invention can accurately define the liability for the rear-end accident of at least three vehicles and improve the efficiency of accident liability determination processing.

[0074] Embodiment III

[0075] Figure 3 is a schematic structural diagram of a vehicle rear-end accident liability determination device provided by Embodiment III of the present invention. As Figure 3 shown, the device includes:

[0076] A rear-end vehicle group division module 310, configured to determine the first time of the first collision and the second time of the last collision when the collision intensities of three vehicles in the rear-end accident of at least three vehicles are greater than a preset intensity threshold;

[0077] A collision time determination module 320, configured to determine the first time of the first collision and the second time of the last collision when the collision intensities of three vehicles in each rear-end vehicle group are greater than a preset intensity threshold;

[0078] An initial liability ratio determination module 330, configured to determine the sequence of the first collision of the intermediate vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability ratio of each vehicle in the rear-end collision vehicle group according to the sequence and the collision intensities of the intermediate vehicle in the front and rear collisions within the target time period;

[0079] A target liability ratio calculation module 340, configured to calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group.

[0080] Optionally, the initial liability ratio determination module includes:

[0081] A collision times determination unit, configured to determine the number of collisions of the previous vehicle within the target time period when the first collision time of the intermediate vehicle within the target time period is earlier than the first collision time of the subsequent vehicle;

[0082] A first initial liability ratio determination unit, configured to determine the initial liability ratio of each vehicle in the rear-end collision vehicle group according to the number of collisions and the collision intensities of the intermediate vehicle in the front and rear collisions within the target time period.

[0083] Optionally, the first initial liability ratio determination unit is configured to:

[0084] When it is determined according to the number of collisions that the previous vehicle collides once, determine that the rear-end collision of the intermediate vehicle and the previous vehicle is the liability of the intermediate vehicle, and determine the initial liability ratio of the subsequent vehicle and the intermediate vehicle during the rear-end collision of the subsequent vehicle and the intermediate vehicle according to the collision intensities of the intermediate vehicle in the front and rear collisions within the target time period;

[0085] When it is determined according to the number of collisions that the previous vehicle collides twice, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity of the intermediate vehicle within the target time period;

[0086] Take the percentage of the previous collision intensity and the total collision intensity as the initial liability ratio of the intermediate vehicle in the rear-end collision vehicle group, and take the percentage of the subsequent collision intensity and the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end collision vehicle group.

[0087] Optionally, the initial liability ratio determination module includes:

[0088] The second initial liability ratio determination unit is configured to, when the first collision time of the intermediate vehicle is the same as the first collision time of the subsequent vehicle within the target time period, determine the initial liability ratio of the intermediate vehicle and the subsequent vehicle in the rear-end collision vehicle group according to the collision intensities of the intermediate vehicle in the front and rear collisions within the target time period.

[0089] Optionally, the second initial liability ratio determination unit is configured to:

[0090] When the collision intensity of the intermediate vehicle in the previous collision within the target time period is greater than that in the subsequent collision, determine that the subsequent vehicle is fully liable in the rear-end collision vehicle group;

[0091] When the collision intensity of the intermediate vehicle in the previous collision within the target time period is less than that in the subsequent collision, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity;

[0092] Take the percentage of the previous collision intensity to the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end collision vehicle group, and take the percentage of the subsequent collision intensity to the total collision intensity as the initial liability ratio of the intermediate vehicle in the rear-end collision vehicle group.

[0093] Optionally, the target liability ratio calculation module is configured to:

[0094] Calculate the average value of the initial liability ratios of each vehicle in the at least three-vehicle rear-end collision according to the initial liability ratio of each vehicle in each rear-end collision vehicle group;

[0095] Take the average value of the initial liability ratios of each vehicle in the at least three-vehicle rear-end collision as the target liability ratio of the corresponding vehicle.

[0096] The target rear-end collision vehicle group judgment module is configured to, before calculating the target liability ratio of each vehicle in the at least three-vehicle rear-end collision according to the initial liability ratio of each vehicle in each rear-end collision vehicle group, judge whether there is a target rear-end collision vehicle group in all rear-end collision vehicle groups; wherein, the target rear-end collision vehicle group is a rear-end collision vehicle group in which the first collision time of the intermediate vehicle is earlier than the first collision time of the subsequent vehicle within the target time period, and the number of collisions of the previous vehicle within the target time period is one;

[0097] The rear-end collision accident division module is configured to, when there is the target rear-end collision vehicle group in all rear-end collision vehicle groups, take the intermediate vehicle in the target rear-end collision vehicle group as a demarcation point, and divide the at least three-vehicle rear-end collision accident into sub-rear-end collision accidents;

[0098] The target liability ratio calculation module is configured to:

[0099] Calculate the target liability ratio of each vehicle in the sub-rear-end collision accident according to the initial liability ratio of each vehicle in each group of rear-end vehicles in the sub-rear-end collision accident.

[0100] The vehicle rear-end collision accident liability determination device provided by the embodiments of the present invention can execute the vehicle rear-end collision accident liability determination method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0101] Embodiment 4

[0102] Figure 4 FIG. shows a schematic structural diagram of a server 10 that can be used to implement embodiments of the present invention. The server is intended to represent various forms of digital computers, such as, for example, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The server can also represent various forms of mobile devices, such as, for example, personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0103] As Figure 4 shown, the server 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the server 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0104] A plurality of components in the server 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the server 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0105] The processor 11 may be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the method for determining liability in a vehicle rear-end collision accident.

[0106] In some embodiments, the method for determining liability in a vehicle rear-end collision accident may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed onto the server 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for determining liability in a vehicle rear-end collision accident described above may be executed. Alternatively, in other embodiments, the processor 11 may be configured to execute the method for determining liability in a vehicle rear-end collision accident in any other suitable manner (e.g., by means of firmware).

[0107] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGA), application-specific integrated circuits (ASIC), application-specific standard products (ASSP), systems-on-chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0108] The computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer program can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0109] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0110] In order to provide interaction with a user, the systems and techniques described herein can be implemented on a server that has: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the server. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0111] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0112] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The relationship between the client and the server is created by computer programs running on respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0113] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0114] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for determining liability in a vehicle rear-end collision accident, characterized in that, it includes: In a rear-end collision accident involving at least three vehicles, in the order from the rear to the front, each adjacent three vehicles among the at least three vehicles are used as a rear-end vehicle group; Determine the first time of the first collision and the second time of the last collision in which the collision intensity of the three vehicles in each rear-end vehicle group is greater than a preset intensity threshold; Determine the order of the first collision of the middle vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability proportion of each vehicle in the rear-end vehicle group according to the order and the collision intensities of the middle vehicle in the two collisions before and after within the target time period; Calculate the target liability proportion of each vehicle in the rear-end collision accident involving the at least three vehicles according to the initial liability proportion of each vehicle in each rear-end vehicle group.

2. The method according to claim 1, characterized in that, Determining the initial liability proportion of each vehicle in the rear-end vehicle group according to the order and the collision intensities of the middle vehicle in the two collisions before and after within the target time period includes: When the first collision time of the middle vehicle within the target time period is earlier than the first collision time of the subsequent vehicle, determine the number of collisions of the previous vehicle within the target time period; Determine the initial liability proportion of each vehicle in the rear-end vehicle group according to the number of collisions and the collision intensities of the middle vehicle in the two collisions before and after within the target time period.

3. The method according to claim 2, characterized in that, Determining the initial liability proportion of each vehicle in the rear-end vehicle group according to the number of collisions and the collision intensities of the middle vehicle in the two collisions before and after within the target time period includes: When it is determined according to the number of collisions that the previous vehicle has one collision, determine that the rear-end collision of the middle vehicle and the previous vehicle is the liability of the middle vehicle, and determine the initial liability proportion of the subsequent vehicle and the middle vehicle during the rear-end collision of the subsequent vehicle and the middle vehicle according to the collision intensities of the middle vehicle in the two collisions before and after within the target time period; When it is determined according to the number of collisions that the previous vehicle has two collisions, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity of the middle vehicle within the target time period; Take the percentage of the previous collision intensity and the total collision intensity as the initial liability proportion of the middle vehicle in the rear-end vehicle group, and take the percentage of the subsequent collision intensity and the total collision intensity as the initial liability proportion of the subsequent vehicle in the rear-end vehicle group.

4. The method according to claim 1, characterized in that, Determining the initial liability proportion of each vehicle in the rear-end vehicle group according to the order and the collision intensities of the middle vehicle in the two collisions before and after within the target time period includes: When the first collision time of the middle vehicle is the same as the first collision time of the subsequent vehicle within the target time period, determine the initial liability ratio of the middle vehicle to the subsequent vehicle in the rear-end collision vehicle group according to the collision intensities of the middle vehicle in the front and rear collisions within the target time period.

5. The method according to claim 4, wherein, determining the initial liability ratio of the middle vehicle to the subsequent vehicle in the rear-end collision vehicle group according to the collision intensities of the middle vehicle in the front and rear collisions within the target time period includes: when the collision intensity of the middle vehicle in the previous collision within the target time period is greater than the collision intensity of the subsequent collision, determine that the subsequent vehicle is fully liable in the rear-end collision vehicle group; when the collision intensity of the middle vehicle in the previous collision within the target time period is less than the collision intensity of the subsequent collision, calculate the total collision intensity of the previous collision intensity and the subsequent collision intensity; take the percentage of the previous collision intensity to the total collision intensity as the initial liability ratio of the subsequent vehicle in the rear-end collision vehicle group, and take the percentage of the subsequent collision intensity to the total collision intensity as the initial liability ratio of the middle vehicle in the rear-end collision vehicle group.

6. The method according to claim 1, wherein, calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group includes: calculating the average value of the initial liability ratios of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group; take the average value of the initial liability ratios of each vehicle in the rear-end collision accident of at least three vehicles as the target liability ratio of the corresponding vehicle.

7. The method according to claim 1, wherein, before calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group, further includes: judging whether there is a target rear-end collision vehicle group in all rear-end collision vehicle groups; wherein, the target rear-end collision vehicle group is a rear-end collision vehicle group in which the first collision time of the middle vehicle is earlier than the first collision time of the subsequent vehicle within the target time period, and the number of collisions of the previous vehicle within the target time period is one; when there is the target rear-end collision vehicle group in all rear-end collision vehicle groups, take the middle vehicle in the target rear-end collision vehicle group as the demarcation point, and divide the rear-end collision accident of at least three vehicles into sub-rear-end collision accidents; calculating the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group includes: calculating the target liability ratio of each vehicle in the sub-rear-end collision accident according to the initial liability ratio of each vehicle in each rear-end collision vehicle group in the sub-rear-end collision accident.

8. A device for determining liability in a vehicle rear-end collision accident, wherein, comprising: a rear-end collision vehicle group division module, configured to, in a rear-end collision accident of at least three vehicles, take every three adjacent vehicles among the at least three vehicles as a rear-end collision vehicle group in the order from the rear to the front; A collision time determination module, configured to determine a first time of the first collision and a second time of the last collision in which the collision intensities of three vehicles in each rear-end collision vehicle group are greater than a preset intensity threshold; An initial liability ratio determination module, configured to determine the order of the first collision of the middle vehicle and the first collision of the subsequent vehicle within a target time period starting from the first time and ending at the second time, and determine the initial liability ratio of each vehicle in the rear-end collision vehicle group according to the order and the collision intensities of the middle vehicle in the front and rear of the target time period; A target liability ratio calculation module, configured to calculate the target liability ratio of each vehicle in the rear-end collision accident of at least three vehicles according to the initial liability ratio of each vehicle in each rear-end collision vehicle group.

9. A server, characterized in that the server includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle rear-end collision accident liability determination method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the vehicle rear-end collision accident liability determination method according to any one of claims 1-7 when executed by a processor.

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