It is true that the fastest speed of ordinary passengers is 120km/h/h, but the Bao-Ji-Cheng (Du) line through which the train passes is a single-track railway. It is often necessary to give way on a single-track railway. Ordinary passenger trains have a lower level and need to avoid trains with higher levels (fast, express ...).

What do you mean, let the car? For example, an ordinary passenger train and an express train travel in the opposite direction. Ordinary passengers need to stop at the station temporarily and wait until the express train in the opposite direction passes, otherwise they will hit;

If the passenger train runs in the same direction as the express train, the express train is fast and the distance from the passenger train in front is getting closer and closer, then the passenger train should also stop at the station temporarily, and then continue running after the express train behind it passes, otherwise it will rear-end.

How fast can I drive if I often stop?

In addition, there are speed limits, especially in the Qinling-Baoji section, and the train speed may not reach 70 km/h.