How to Judge the Distance from the Rear Vehicle?
2 Answers
Here are the methods to judge the distance from the rear vehicle using the rearview mirror: 1. If the rear vehicle is on the right side of the rearview mirror: the distance is at least about 30 meters. 2. If the rear vehicle is in the middle of the rearview mirror: the distance is about 15-20 meters. 3. If the rear vehicle is on the left side of the rearview mirror: the distance is about 5 meters, and you need to drive carefully. Below is additional information about the rearview mirror: 1. Definition: The rearview mirror is a tool that allows the driver to directly obtain external information about the rear, side, and lower parts of the car while seated in the driver's seat. 2. Purpose of the rearview mirror: To ensure the driver's convenience in operation, prevent traffic safety accidents, and ensure personal safety. 3. Technical principle: The rearview mirror has a field of view issue, which refers to the range that the mirror surface can reflect. The industry has proposed three elements of the field of view: the distance between the driver's eyes and the rearview mirror, the size of the rearview mirror, and the curvature radius of the rearview mirror. When the distance and size of the rearview mirror are the same, the smaller the curvature radius of the mirror surface, the larger the field of view reflected by the mirror surface. When the curvature radius of the mirror surface is the same, the larger the size of the mirror surface, the larger the field of view reflected by the mirror surface.
After years of driving, I've always relied on rearview mirrors to estimate the distance of vehicles behind me—simple and reliable. Observe the size change of the following car in the mirror: if it appears as a small dot, it's still far away; if it occupies half the mirror, it's too close. This trick works on highways or in the city, especially before changing lanes to ensure there's enough buffer space. Don't rush to switch lanes; take an extra second or two to observe. Be extra cautious during rain or night driving—clear mirrors are crucial. As a safety habit: maintain steady speed, use lights to alert or yield when a car is too close behind to avoid rear-end risks. Develop the habit of glancing at the rearview mirror every few minutes, and with time, you'll judge distances by experience.
