过去70年里,美国校车之所以不断发生改变,主要是因为相关标准法规变得更加严格。校车标准十分完备美国联邦机动车辆安全标准(FMVSS)中包含了多条关于校车的专门规定,其中多数是在1977年4月1日生效的,迄今为止仍然具有效力。以下仅举出部分具有代表性的条款。(1)FMVSS217:1973《校车紧急出口》规定,校车发生撞击后,乘员不会从紧急出口被 Over the past 70 years, the reason why the school buses in the United States have been constantly changing is mainly because the relevant standards and regulations have become more stringent. School bus standards are well established The Federal Motor Vehicles Safety Standards (FMVSS) contains a number of special rules for school buses, most of which came into effect on April 1, 1977 and remain in effect so far. The following is only part of the representative provisions. (1) FMVSS217: 1973 “school bus emergency exit” provides that the school bus crash, the crew will not be from the emergency exit was