Recently, the network appeared a on the how to pass exterior rearview mirror to judge the car tips, is mainly based on the following car in automobile outside rear-view mirror in proportion to the size of judge. Then, this method is accurate?

According to the online said tricks, as driving the vehicle, if the car outside rearview mirror images accounted for almost all of the outside rear-view mirror, then after the car and the car distance in 3 meters; if after the car outside rearview mirror for 2/3, then the distance between two vehicles in 5 meters left and right; if accounted for 1/2, then the distance between two vehicles in 9 meters; if accounted for 1/3, in the 12 meters.

The author found, the tricks used in the test are common rearview mirror measured results. But at present, there are mainly two kinds of rearview mirror, a plane mirror, the other is a convex mirror, its image than visual small, but large vision scope, which we called " the vision ".

In the two car 3 meters away from the situation, general rearview mirror car after the image basic accounted for before the car rearview mirror all; and in " the vision ", after the car was not accounted for by all, accounted for slightly more than 1/2. In the two car 5 meters away from the situation, general rearview mirror car after the image basic accounted for before the car rearview mirror 2/3; while in the " Horizon ", the proportion is less than 1/2.

In the two car 9 meters away from the situation, general rearview mirror car after the image also can basically satisfy the tips of said 1/2; but in the " Horizon ", its proportion to greater than 1/4.

A specialized in automobile refitting industry said, there are few sellers will tell the owner, " the vision " the image to be less than the actual see. If the rear wheels in the use of the " vision " of the front vehicle rearview mirror filled between two cars, so basically has no distance, and in the actual line, it is easy to cause two car cut loiter or even crash.

Therefore, the source said, due to the distance judgment is a serious distortion, so the selection of " vision " mirrors the actual driving, to leave enough space for vehicle operation, in order to avoid danger.