What is the line on the rearview mirror?
2 Answers
The rearview mirror with a dotted line is called a "dual-curvature rearview mirror." This dotted line is located on the outer part of the mirror, usually at the one-third position. The area outside the dotted line is referred to as the outer section of the rearview mirror. The area inside the dotted line is used for observing nearby conditions with a normal field of view. During regular use: Because it combines two different curvatures, drivers can maintain visibility for both nearby and distant areas, effectively reducing blind spots in the rearview mirror, making it more convenient to use and reducing risks. Adjusting the rearview mirror: The correct method for adjusting car rearview mirrors: For the left-side rearview mirror, first position the horizon at the centerline of the mirror, then adjust the edge of the car body to occupy 1/4 of the mirror's image.
As a seasoned driver with years of experience, I have to mention that line on the rearview mirror—it's actually designed to prevent glare. I often drive long distances at night, and when the headlights from the car behind are too bright, they can be blinding. That line serves as a dividing point, reminding you to manually flip the mirror. Just pull the small lever at the bottom of the mirror, and the angle changes. The area beyond the line reduces the glare, making your view clearer. This design is highly practical and helps reduce the risk of accidents at night. Many older cars have this feature, and I always check the flipping function during maintenance to ensure it doesn't get stuck. If the mirror stops working properly, get it fixed at a repair shop immediately—safety always comes first. New car owners might overlook this detail, but once they use it, they'll realize how helpful it can be.