What is the purpose of a novice looking at the rearview mirror?

[DeWilliam]

For novice drivers, the purpose of looking at the rearview mirror is to judge the distance of the vehicle behind by observing changes in positional relationships and distances. Below are specific introductions to the functions of car rearview mirrors: Observing road conditions: While driving, the driver can observe the road conditions on both sides through the rearview mirrors to perform operations such as lane changes and overtaking. Reference points: During operations like parallel parking or reversing into a parking space, reference points can be identified using the rearview mirrors. Judging the distance to the vehicle behind: Pay special attention to the central rearview mirror. The distance to the vehicle behind can be judged through the central rearview mirror. When the front wheels of the vehicle behind are just visible in the central rearview mirror, the distance is approximately 13 meters. When the grille is visible, the distance is about 6 meters. When the grille is just no longer visible, the distance is approximately 4 meters.