What is the function of a car's rearview mirror?

[StMaggie]

Here is a detailed introduction to the functions of a car's rearview mirror: Observing road conditions: While driving, the driver can observe the road conditions on both sides through the rearview mirrors, enabling actions 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: Particular attention should be paid to the central rearview mirror. It can help determine the distance to the vehicle behind. When the front wheels of the rear vehicle are just visible in the central rearview mirror, the distance is approximately 13 meters. When the grille of the rear vehicle is visible, the distance is about 6 meters. When the grille is just out of view, the distance is roughly 4 meters.