两秒规则的目的是什么?What is the purpose of the two-second rule?
如果前车停下,让后车有足够的时间刹车To give you enough time to stop if the vehicle in front stops.
让超车的车辆能够安全的回到原来的车道To allow overtaking vehicles to move back into the line of traffic safely if required.
两秒钟的时间足以在任何天气条件下停车Two seconds is enough time to stop in any weather conditions, if required.