What is a crucial limitation of mirrors while driving?

Mirrors are an essential tool for drivers, particularly for those operating commercial vehicles, as they assist in monitoring surroundings and ensuring safety. However, a crucial limitation of mirrors is that they do not eliminate blind spots. This is important because blind spots are areas around the vehicle that are not visible through standard mirrors.

Despite having mirrors that provide visibility to the rear and sides of the vehicle, there are still areas that the driver cannot see without turning their head or checking other systems, such as electronic blind-spot monitors. This limitation necessitates additional precautions, such as physically checking blind spots before changing lanes or making turns, which is vital for safe driving, especially in larger vehicles that have more significant blind spots. Understanding this limitation underlines the importance of comprehensive safety practices beyond reliance on mirrors alone.