Car rearview mirrors are mainly divided into two types: exterior rearview mirrors and interior rearview mirrors, each with distinct features in functional design and installation position. They provide a wide side and rear view, helping drivers observe traffic conditions when changing lanes or turning, though convex mirrors cause slight image distortion. Interior rearview mirrors are fixed above the centre of the front windshield, mostly designed with plane mirrors, which can accurately reflect the distance of vehicles behind and the situation in the rear of the car, making them suitable for long-distance observation. Modern vehicle models have also introduced new technologies such as electronic rearview mirrors, which provide clearer vision through cameras and displays, performing particularly well in rainy and foggy weather, albeit at a higher cost. These two basic rearview mirrors together form the core visual system for driving safety. Drivers need to regularly adjust the mirror angles to ensure the optimal field of view-for example, exterior rearview mirrors should display 1/4 of the vehicle body and 2/3 of the road surface, while interior rearview mirrors should be aligned with the centre of the horizon.
