Our lives are inseparable from physics. Among the following traffic safety warnings about automobiles, the ones that have nothing to do with inertia are (　) A. Keep distance between vehicles B. The ve

Our lives are inseparable from physics. Among the following traffic safety warnings about automobiles, the ones that have nothing to do with inertia are (　) A. Keep distance between vehicles B. The vehicle starts, please

A. The purpose of keeping the distance between cars is to prevent the car behind from braking when the car in front brakes. Due to inertia, the car behind still moves forward. If the distance is too close, it is easy to hit the car in front. Therefore, it is related to inertia.

B. Before the vehicle starts, both the person and the vehicle are in a relatively stationary state. When the vehicle starts, the vehicle has to change its original state of motion. Due to inertia, the person has to maintain the original stationary state, and the person and the vehicle are in a relatively static state. If there is a tendency for relative movement, people will move backwards, so be reminded to hold on to the handrails; this is related to inertia.

C. Seat belts are used to prevent the human body from moving forward due to inertia and hitting the car body when the car brakes suddenly, causing harm to people. Therefore, it is related to inertia.

D. No retrograde driving is a warning about traffic. It has nothing to do with inertia.

So choose D.