从世界第一辆汽车诞生开始,汽车对促进社会进步,提高大众的物质生活水平,改变人们的精神生活都起了非常重要的作用。但随着世界汽车工业的不断发展,汽车保有量迅速增加,随之带来的汽车安全事故、环境污染及能量消耗,特别是汽车的安全问题,已经构成严重的社会公害,因此从20世纪5 Starting from the birth of the world’s first car, the automobile plays a very important role in promoting social progress, raising the material standard of living of the general public and changing people’s spiritual life. However, with the continuous development of the automobile industry in the world, the rapid increase of car ownership, the consequent accidents of automobile safety, environmental pollution and energy consumption, especially the safety of automobiles, have constituted a serious public hazard. Therefore, from the 20th century