一、问题的提出 按照《机动车运行安全技术条件》(GB7258—87)的规定:“车长大于8m或乘员座位数多于40人的客车,如果车身右侧仅有一个供乘客上车的车门,应设有安全门或安全出口”。根据这一新规定,我们在新生产的大客车上都增设了安全门。由于现有的司机门、乘客门用锁不能用于安全门门锁,目前国内又尚无安全门门锁供应,因而只好客车生产厂自行设计。 First, the issue put forward in accordance with the “technical conditions for the safety of motor vehicles” (GB7258-87) provides that: “the driver of more than 8m or passenger seats more than 40 passengers, if the right side of the body only one for passengers to board the car Doors should be provided with safety gates or safety exits. ” According to this new regulation, we have added safety gates to the newly-produced buses. As the existing driver’s door, passenger door locks can not be used for safety door locks, there is no domestic security door lock supply, which had to design their own bus factory.