What are the methods for a car to judge distance?

[FernandoLynn]

Methods for a car to judge distance include: 1. Judging distance based on rearview mirrors; 2. Using wheel position to judge distance; 3. Judging distance based on parking sensors. The method for judging distance based on rearview mirrors is as follows: 1. When the car image occupies the entire rearview mirror, the distance is 3m; 2. When the car image occupies two-thirds of the rearview mirror, the distance is 5m; 3. When the car image occupies half of the rearview mirror, the distance is 9m; 4. When the car image occupies one-third of the rearview mirror, the distance is 12m. The method for judging distance based on parking sensors is: Determining the distance through sound. Parking sensors emit beeps at a certain frequency, and the frequency increases as the obstacle gets closer. When the beeping frequency becomes faster and is accompanied by a continuous sound, it indicates that the vehicle is getting closer to the obstacle.