What is the purpose of the line on the rearview mirror?
2 Answers
The function of the line on the rearview mirror is: the glass on the outer side of the line changes its curvature, resulting in two different curvatures on the same reflective surface of the rearview mirror. This design provides a wider field of view for the rearview mirror, reducing blind spots while driving and lowering the likelihood of traffic accidents. Additional information: 1. If there is such a line on the rearview mirror, it is called a dual-curvature rearview mirror, meaning the inner and outer sections of the mirror have different curvatures. 2. This line is vertically positioned, located one-third of the way from the side closest to the vehicle body. 3. If there is no such line, it is a standard rearview mirror. However, it can be upgraded to a "dual-curvature rearview mirror" by adding a "convex lens" to the mirror. This modification can also expand the rearward field of view, which is beneficial for reversing or observing traffic conditions behind the vehicle.
I've been driving for over ten years and have gotten used to checking those lines on the mirrors. They're actually the indicator lights for the blind spot monitoring system. When another car sneaks into the area beside your vehicle that's hidden by the mirror, those lines will suddenly light up or flash, immediately warning you not to change lanes—it's been a huge help. I remember one rainy day when visibility was poor, I was about to change lanes when the light came on—sure enough, there was a car there, and it nearly caused an accident. That system really saved the day. Plus, these lights rely on sensors on the car to detect the side areas, which is much safer than turning your head to look out the rear window. During routine maintenance, I always advise my friends to check if the lights are working properly, especially in rain or snow. After driving for so long, I've come to appreciate how these small design features make the road safer. You can even adjust the brightness of these lights to suit different lighting conditions.
