Computerized method and system for estimating an effect on liability using a comparison of the actual speed of a vehicle in an accident and time and distance traveled by the vehicles in a merging vehicle accident

• US 7,809,586 B2
• Filed: 11/27/2002
• Issued: 10/05/2010
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Computer Sciences Corporation (DXC Technology Company)
• Original Assignee: Computer Sciences Corporation (DXC Technology Company)
• Inventors: Wiesman, Kimberly, Rourke, Kathleen E., Wahlbin, Stephan
• Primary Examiner(s): Koppikar; Vivek D
• Application Number:
  US10/306,623
• Publication Number:
  US 20040103004A1
• Time in Patent Office: 2,869 Days
• Field of Search: 705 2- 4
• US Class Current: 705/4
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: G06Q 40/08 Insurance

Abstract

Computer-implemented methods and systems for estimating liability for a vehicle accident are provided. In one embodiment, the theoretical paths of a straight traveling vehicle and of a turning vehicle may be estimated. In certain embodiments, the turning vehicle may be merging into the same lane as the straight traveling vehicle. The opportunity of at least one vehicle, traveling at a specified speed, to avoid the accident may be assessed. In an embodiment, a contribution to liability to at least one vehicle may be estimated based on the opportunity of the vehicle to avoid the accident.

Claims

1. A method of estimating liability for vehicle accidents using a computer system, comprising:

the computer system estimating a theoretical path of a straight traveling vehicle using position data for one vehicle in a vehicle accident that has already occurred;

the computer system estimating a theoretical path of a turning vehicle using position data for another vehicle in the vehicle accident that has already occurred, wherein the turning vehicle is in the same lane at the completion of a turn as the straight traveling vehicle;

estimating, for at least one of the straight traveling vehicle or the turning vehicle that is in the same lane at the completion of the turn as the straight traveling vehicle, at least one vehicle avoidance speed, wherein the vehicle avoidance speed is an approximate speed that allows a reacting vehicle an opportunity to avoid the vehicle accident;

the computer system making at least one comparison of the vehicle avoidance speed with at least one specified speed for the at least one vehicle, wherein the computer system making at least one comparison of the vehicle avoidance speed with at least one specified speed of at least one vehicle comprises;

estimating at least one safe speed of the at least one vehicle, wherein the safe speed is estimated based on at least the speed limit, road conditions and weather conditions at the time and location of the accident;

the computer system comparing at least one vehicle avoidance speed with at least one actual speed of at the at least one vehicle; and

the computer system comparing at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle;

assessing an opportunity of at least one vehicle to have avoided the vehicle accident that has already occurred, wherein the assessment of the opportunity of the at least one vehicle to have avoided the vehicle accident is based, at least in part, on the comparison of the at least one vehicle avoidance speed with at least one actual speed of the at least one vehicle and on the comparison of the at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle; and

the computer system estimating, when possible, a contribution to liability of at least one vehicle based, at least in part, on the opportunity of the vehicle to avoid the vehicle accident that has already occurred.

2. The method of claim 1, further comprising determining whether the straight traveling vehicle collides with the turning vehicle after completion of the turn.

3. The method of claim 1, wherein estimating the vehicle avoidance speed comprises:

estimating a time for the turning vehicle to substantially complete a turn;

estimating the position of the straight traveling vehicle at the time the turning vehicle substantially completes the turn; and

comparing the position of the turning vehicle with the straight traveling vehicle.

4. The method of claim 1, wherein estimating the vehicle avoidance speed comprises:

estimating the speed of the straight traveling vehicle at the completion of the turn;

estimating the speed of the turning vehicle at the completion of the turn; and

comparing the speed of the straight traveling vehicle with the speed of the turning vehicle.

9. The method of claim 1, wherein the vehicle avoidance speed is estimated from the equation:

v_new=CD/t_new

where CD is the distance from a perception point, point C, to a collision area for the vehicle accident, point D, and where t_new is an estimated time for a vehicle A to travel a specified distance from the perception point.

10. The method of claim 1, wherein assessing the opportunity of the at least one vehicle to have avoided the vehicle accident comprises determining that it is likely that the at least one vehicle could have avoided the accident at the speed it was traveling if, for at least one comparison, the vehicle avoidance speed is greater than or equal to the actual speed.

11. The method of claim 1, wherein assessing the opportunity of the at least one vehicle to have avoided the vehicle accident comprises determining that it is likely that the at least one vehicle should have been able to avoid the accident if, for at least one comparison, the vehicle avoidance speed is greater than or equal to the safe speed.

12. The method of claim 1, wherein the computer system estimating the contribution to liability of at least one vehicle further comprises:

the computer system determining a raw speed factor shift, wherein the raw speed factor shift is based, at least on part, on a calculation of the excess of the actual speed of at least one vehicle over at least one specified speed;

the computer system determining an opportunity-to-avoid factor shift, wherein the opportunity-to-avoid factor shift is based on the assessment of the opportunity for the at least one vehicle to have avoided the vehicle accident; and

the computer system applying a total speed factor shift to a base liability, wherein the total speed factor shift is based, at least in part, on a combination of the raw speed factor shift and the opportunity-to-avoid factor shift.

13. The method of claim 1, further comprising:

associating, in a memory of the computer system, one or more numerical factor shifts with one or more values of each of;

a speed factor, wherein the value of the speed factor is based on at least one of comparison of a vehicle avoidance speed with at least one specified speed; and

a braking factor, wherein the value of the braking factor is based on whether or not the reacting vehicle attempted to avoid the accident by braking,

wherein the computer system estimating the contribution to liability of at least one vehicle comprises the computer system applying, to a base liability, at least one numerical factor shift from among the one or more numerical factor shifts in the memory, wherein the applied at least one factor shift is associated with values of the speed factor and the braking factor in the memory that match values of the speed factor and the braking factor for the vehicle accident.

5. A system configured to estimate liability, comprising:

a CPU;

a data memory coupled to the CPU; and

a system memory coupled to the CPU, wherein the system memory is configured to store one or more computer programs executable by the CPU, and wherein the computer programs are executable to implement a method for estimating liability for vehicle accidents, the method comprising;

estimating a theoretical path of a straight traveling vehicle using position data for one vehicle in a vehicle accident that has already occurred;

estimating a theoretical path of a turning vehicle using position data for another vehicle in the vehicle accident that has already occurred, wherein the turning vehicle is in the same lane at the completion of a turn as the straight traveling vehicle;

estimating, for at least one of the straight traveling vehicle or the turning vehicle that is in the same lane at the completion of the turn as the straight traveling vehicle, at least one vehicle avoidance speed, wherein the vehicle avoidance speed is an approximate speed that allows a reacting vehicle an opportunity to avoid the vehicle accident;

making at least one comparison of the vehicle avoidance speed with at least one specified speed for the at least one vehicle, wherein making at least one comparison of the vehicle avoidance speed with at least one specified speed of at least one vehicle comprises;

estimating at least one safe speed of the at least one vehicle, wherein the safe speed is estimated based on at least the speed limit, road conditions and weather conditions at the time and location of the accident;

comparing at least one vehicle avoidance speed with at least one actual speed of at the at least one vehicle; and

comparing at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle;

assessing an opportunity of at least one vehicle to have avoided the vehicle accident that has already occurred, wherein the assessment of the opportunity of the at least one vehicle to have avoided the vehicle accident is based, at least in part, on the comparison of the at least one vehicle avoidance speed with at least one actual speed of the at least one vehicle and on the comparison of the at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle; and

estimating, when possible, a contribution to liability of at least one vehicle based, at least in part, on the opportunity of the vehicle to avoid the vehicle accident that has already occurred.

7. The system of claim 5,

estimating a time for the turning vehicle to substantially complete a turn;

estimating the position of the straight traveling vehicle at the time the turning vehicle substantially completes the turn; and

comparing the position of the turning vehicle with the straight traveling vehicle.

8. The system of claim 5, wherein estimating the vehicle avoidance speed comprises:

estimating the speed of the straight traveling vehicle at the completion of the turn;

estimating the speed of the turning vehicle at the completion of the turn; and

comparing the speed of the straight traveling vehicle with the speed of the turning vehicle.

6. A tangible, computer readable storage medium comprising program instructions stored thereon, wherein the program instructions are computer-executable to implement a method for estimating liability for vehicle accidents, the method comprising:

estimating a theoretical path of a straight traveling vehicle using position data for one vehicle in a vehicle accident that has already occurred;

estimating a theoretical path of a turning vehicle using position data for another vehicle in the vehicle accident that has already occurred, wherein the turning vehicle is in the same lane at the completion of a turn as the straight traveling vehicle;

estimating, for at least one of the straight traveling vehicle or the turning vehicle that is in the same lane at the completion of the turn as the straight traveling vehicle, at least one vehicle avoidance speed, wherein the vehicle avoidance speed is an approximate speed that allows a reacting vehicle an opportunity to avoid the vehicle accident;

making at least one comparison of the vehicle avoidance speed with at least one specified speed for the at least one vehicle, wherein making at least one comparison of the avoid the vehicle accident vehicle avoidance speed with at least one specified speed of at least one vehicle comprises;

estimating at least one safe speed of the at least one vehicle, wherein the safe speed is estimated based on at least the speed limit, road conditions and weather conditions at the time and location of the accident;

comparing at least one estimated speed to avoid the vehicle accident vehicle avoidance speed with at least one actual speed of at the at least one vehicle; and

comparing at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle;

assessing an opportunity of at least one vehicle to have avoided the vehicle accident that has already occurred, wherein the assessment of the opportunity of the at least one vehicle to have avoided the vehicle accident is based, at least in part, on the comparison of the at least one vehicle avoidance speed with at least one actual speed of the at least one vehicle and on the comparison of the at least one vehicle avoidance speed with the at least one estimated safe speed for the at least one vehicle; and

estimating, when possible, a contribution to liability of at least one vehicle based, at least in part, on the opportunity of the vehicle to avoid the vehicle accident that has already occurred.