What is the standard adjustment for the left side mirror?

[DeJosephine]

For the left side mirror, the vertical adjustment should position the distant horizon at the center, while the horizontal adjustment should set the car body to occupy 1/4 of the mirror's surface area. As for the right side mirror, when adjusting the vertical position, a larger portion of the ground should be visible, accounting for about 2/3 of the mirror's surface. The horizontal adjustment should similarly position the car body to occupy 1/4 of the area. The functions of the side mirrors are as follows: 1. Facilitating operation: For the convenience of the driver, to prevent traffic safety accidents and ensure personal safety, side mirrors must be installed on the car, and all mirrors must be adjustable in direction. The driver can directly obtain external information about the rear, side, and lower parts of the car while seated in the driver's seat. 2. Expanding the field of view: Side mirrors have a field of view issue, which refers to the range that the mirror can reflect. The industry mentions three elements of the field of view: the distance between the driver's eyes and the mirror, the size of the mirror, and the radius of curvature of the mirror.