What is the detailed explanation around the heading of subject three?

When the vehicles in subject 3 are driving, they often encounter the moment of observing the road conditions. You must have left and right eyes to observe the driving situation of the vehicle and make sure it is safe before changing lanes.

When shaking your head, you should master the strength of the master, the head can shake, and the steering wheel should be firmly held to avoid the vehicle shaking. When you swing your head, you need to look at the center of your route, which is also to avoid the vehicle from running off.

Extended data

The fact that you need to shake your head on the road.

When going straight or turning at an intersection, you need to swing your head left and right, because without swinging your head, it is difficult to observe the situation on the left and right sides of the car only from the corner of your eye.

You also need to swing your head from side to side in crowded sections, because at this time, vehicles are driving in parallel at close range, or driving at close range, and it is very likely that there will be cars changing lanes or pedestrians walking beside them, so pay attention to the situation around the cars to prevent touching or being touched.