在同一条道路上常有很多辆机动车来往行驶,而同向行驶的车辆之间应保持多大距离,这是驾驶员们经常遇到的问题。因为行车间距太小,容易发生撞车事故,即追尾;行驶间距过大呢,又会使这段道路上的车辆通过能力下降,不利于提高运输效率。所以,行车中前后车之间必须有一个适当的距离,即安全距离。 In the same road often have a lot of motor vehicles traveling, and in the same direction should keep the distance between the vehicles, which is the driver often encountered problems. Because the driving distance is too small, prone to crash, that is rear-end; driving distance is too large, it will make this section of the road vehicles passing capacity is not conducive to improving transport efficiency. Therefore, before and after driving in the car must have an appropriate distance, that is, the safety distance.