What danger could be associated with driving a tractor and trailer over a humpbacked bridge?
- The tractor's suspension could smooth out the bump.
- The trailer could jack-knife.
- Correct answerThe trailer could become detached.
- The trailer's parking brake could automatically engage.
Explanation
Before towing a trailer, a driver should ensure that the tow hitch has sufficient ground clearance. If this hits the road, for example when travelling over a humpbacked bridge, there is a danger that the trailer will become detached. Drivers should also plan and carry out their journey with an awareness of this risk.
Read in Chinese
驾驶拖拉机和拖车通过拱形桥可能存在什么危险？
- 拖拉机的悬挂系统可以减缓颠簸。
- 挂车可能会折叠。
- 拖车可能会脱落。
- 拖车的驻车制动可能会自动启动。
在拖挂拖车之前，驾驶员应确保拖车钩具有足够的离地间隙。如果拖车钩碰到路面，例如在经过拱桥时，拖车可能会脱落。驾驶员还应在规划和执行行程时意识到这一风险。