The mirror used inside a car to observe the road conditions behind is called a rearview mirror. In technical specifications, this component is also referred to as an "interior rearview mirror" to distinguish it from the "side mirrors" (exterior rearview mirrors) mounted on both car doors. Modern vehicles are commonly equipped with rearview mirrors featuring auto-dimming functionality. Utilizing photosensitive elements to detect intense light and adjust the mirror's reflectivity, they effectively mitigate visual disturbances caused by high beams from trailing vehicles during nighttime driving. Some premium models further integrate additional features such as dashcams, compasses, or ambient temperature displays. Notably, the adjustment angle of the rearview mirror directly impacts the field of view. It is best to align the central rearview mirror with the centerline of the rear windshield to ensure a comprehensive view of traffic across three rear lanes-a fundamental configuration for defensive driving.
