What are those mirrors in cars called?

The mirrors on both sides of a car are usually called exterior mirrors or side mirrors, which are mainly used to observe the road conditions at the rear and in the blind spots of the vehicle to ensure safety when changing lanes and turning. Based on functional and structural differences, rearview mirrors can be categorized into plane mirrors (e.g., interior rearview mirrors with distortion-free images), dual-curvature mirrors (combining the benefits of flat and convex surfaces to minimize blind spots), and electronic rearview mirrors (which transmit images via cameras for adaptability in adverse weather). Some premium models also feature automatic anti-glare or wide-angle functions to enhance safety during nighttime or complex driving conditions. Proper adjustment of exterior mirror angles is critical-It is best to position the car body to occupy approximately 1/4 of the mirror surface while allocating 2/3 to ground visibility, balancing near and far observation needs. These designs collectively aim to help drivers comprehensively assess their surroundings and mitigate accident risks.