Key points for adjusting the left rearview mirror: put the horizontal line on the center line of the rearview mirror, and then adjust the edge of the car body to occupy the mirror image of 1/4. Key points of adjusting the right rearview mirror: place the horizontal line at 2/3 of the rearview mirror, and then adjust the body edge to occupy the mirror image of 1/4. Key points for adjusting the central rearview mirror: put it horizontally in the middle, between the left ears. The horizontal line in the distance is placed horizontally on the center line of the central rearview mirror, and then moved left and right, and the image of your right ear is just at the left edge of the mirror. There may be more blind spots in the car than you think, and it can't be covered by three rearview mirrors alone, so whether you change lanes or turn left and right, look back when you are sure it is safe! In the past, many concept cars used cameras to grasp the situation around the car, but it seems that their functions are not as good as those of the two thin mirrors, and each production car is also equipped with rearview mirrors. Although the left and right rearview mirrors are one of the main sources of driving wind shear sound, they are particularly vulnerable to collision and damage because they are located at the outermost positions on both sides of the car body. For a long time, many automobile engineers want to replace its functions with other equipment, but so far, no automobile factory has been able to do this. Whether it's Mercedes or BMW. Correct rearview mirror position How to adjust the three rearview mirrors located in the left, right and center of the windshield? The first is an old saying, first adjust the standard sitting posture, and then adjust the mirror. 1. Central rearview mirror: Adjust the left and right positions until the left edge of the mirror just cuts the right ear of your image in the mirror, which means that you can't see yourself from the central rearview mirror under normal driving conditions, so you can put the distant horizon in the up and down position right in the center of the mirror. 2. Left rearview mirror: the up-and-down position is centered on the far horizon, and the left and right positions are adjusted to 1/4 of the mirror area occupied by the car body. Third, the right rearview mirror: because the driver's seat is on the left, it is not so easy for the driver to master the right ear. Coupled with the need of roadside parking sometimes, when adjusting the up and down position of the right rearview mirror, the ground area is large, accounting for about 2/3 of the rearview mirror. The left and right positions can also be adjusted to the 1/4 area of the car body. Many people think that in order to eliminate blind spots, the left and right rearview mirrors should be adjusted outward or downward as much as possible. In addition, perhaps to keep a clean appearance at all times, research shows that many drivers will adjust the central rearview mirror to take a look at themselves while driving. According to Sanyang Industrial Safety Driving Training Center, the adjustment of the above methods is the most correct perspective after obtaining the maximum effectiveness. Look back and make sure the clear space is normal. The driver can see about 200 degrees ahead without looking back. In other words, he can't see around 160 degrees. The remaining 160 degree can be covered by three small mirrors, which is really "strong mirror is difficult"; In fact, the left and right rearview mirrors plus the central rearview mirror can only provide an additional visual range of about 60 degrees. What about the remaining 100 degrees? It's simple, just look back! This is no joke! I believe that car owners who have driven in the United States know that when driving in the United States, there is an important item in the actual road test, that is, whether to turn around to judge whether there is a car coming when turning and changing lanes.