What are the precautions for reversing?

[DiHannah]

Precautions for reversing include: 1. Do not reverse blindly; 2. Do not reverse without honking; 3. Do not vary speed suddenly while reversing; 4. Do not reverse in dangerous road sections. Methods to judge the distance when reversing are: 1. When the car image occupies the entire rearview mirror, the distance is 3 meters; 2. When the car image occupies two-thirds of the rearview mirror, the distance is 5 meters; 3. When the car image occupies half of the rearview mirror, the distance is 9 meters; 4. When the car image occupies one-third of the rearview mirror, the distance is 12 meters; 5. When the upper edge of the rear bumper of the car in front is seen at the lower edge of the front windshield, the distance is 1 meter; 6. When the lower edge of the rear bumper of the car in front is seen at the lower edge of the front windshield, the distance is 2 meters; 7. When the lower edge of the rear tire of the car in front is seen at the lower edge of the front windshield, the distance is 3 meters.