How Do Drivers Judge the Distance Between Cars?

[IrisDella]

Drivers judge the distance between cars by the following methods: 1. When the upper edge of the rear bumper of the car in front is visible, the distance is 1 meter; 2. When the lower edge of the rear bumper of the car in front is visible, the distance is 2 meters; 3. When the lower edge of the rear tire of the car in front is visible, the distance is 3 meters; 4. If the car's reflection occupies the entire rearview mirror, the distance is 3 meters; if it occupies two-thirds of the rearview mirror, the distance is 5 meters; if it occupies half of the rearview mirror, the distance is 9 meters; if it occupies one-third of the rearview mirror, the distance is 12 meters. Reasons for maintaining distance: 1. To avoid rear-end collisions caused by sudden braking of the car in front; 2. To reserve reaction time for handling emergencies.