2003年至2009年,我国道路交通事故起数、死亡人数和受伤人数三项指标连续七年“三下降”。然而,道路交通事故次数死亡率却持续增加,死伤比自2006年起也呈上升趋势(见图1)。可见,近年来我国平均每起道路交通事故造成的伤害后果日益严重。分析其原因,固然有道路交通条件改善、机动车行驶车速增加等因素影响,但车辆安全性差这一原因也不容忽视。为此,有 From 2003 to 2009, the three indicators of the number of road traffic accidents, the number of deaths and the number of wounded in our country lasted for seven years, “three drops”. However, the number of road traffic fatalities has continued to increase, with the casualty ratio also showing an upward trend since 2006 (Figure 1). It can be seen that in recent years, the injury consequences caused by every road traffic accident in our country have become increasingly serious. Analysis of the reasons, of course, improve the road traffic conditions, the motor vehicle speed increases and other factors, but the reasons for poor vehicle safety can not be ignored. For this reason, there is