Study On The Collision Velocity Of Traffic Accident And Software Development

With the development of automobile industry and road transportation, the traffic accidents happen every day in the world and become a serious society problem.According to the statistic from police, each kind of traffic accidents occurred in our country. The collision accidents occupied 57%.The personnel casualty which created by the collision accidents reached 70%. Regardless of the sum of accidents, the personnel casualty or the economic loss, they occupy above 2/3 of corresponding total, and become main shape of the modern road traffic accidents.Checkup in the traffic accident, the biggest trouble is the determination of the velocity. The only reliable solution to this question is collecting sufficient evidences in the scene. Then we need analyze these evidences carefully and educe the science conclusion. Moreover, mechanics is main theory tool to carry out this analysis. Making use of the theory of mechanics to analyze and calculate, calculate the velocity of traffic vehicle accurately is the foundation of accident reconstruction process.This paper depends on the plenty experience resources of the Sichuan Xihua Institute of Automobile Vehicle Justice Identification. It's very useful for traffic policemen. It will be more advantageous to accident vehicles velocity calculation later and has facilitated the velocity calculation for specialized technical personnel, and has provided accurate basis for the traffic police to division responsibility.on the foundation of summarizing the predecessor studies, this paper deeply discusses the automobile collision theory. Using classics collision mechanics method and combining the characteristic of collision accident. The paper has analyzed the entire process of collision systematically. Some practical and feasibility formulas which calculate the velocity of accident vehicles are proposed. Then dissect use scope of each formula and the influence factors of involved the parameters. Aim at the accidents which actually occurred, analyzing the uncertain of the essential parameters needed by the calculation of collision velocity, such as road surface trace, coefficient of adhesion, automobile body distortion and so on. This paper uses VB language developed the computer assistance software of the calculation of typical traffic accident velocity with national standard GA/T643-2006.It's very advantageous for the traffic control department of the public security organ and the traffic police of the cases and the specialized technical personnel and the appraisal organization. The software can improve the level and efficiency of velocity technical appraisal.This paper introduces three examples of typical traffic accidents occurred in Cheng-Nan highway, demonstrated in the computation process how to select appropriate formula as well as how to make certain the parameter according to the different characteristic of every accident. Then calculate typical traffic accident velocity using computer-aided software. Through testing, this velocity calculation software is proved to be effective and accurate and feasible.