How often should drivers check their rearview mirrors?

Drivers should check their rearview mirrors often to maintain awareness of their surroundings because doing so is essential for safe driving. Regularly checking mirrors helps drivers stay informed about the traffic conditions behind and beside them, allowing for better decision-making. It enables them to spot vehicles that may be approaching from behind, identify potential hazards, and be aware of other drivers’ actions. This practice also helps in assessing the space and conditions when changing lanes, merging, or preparing to stop, contributing to overall road safety.

Frequent mirror checks enhance a driver's situational awareness, which is critical in avoiding accidents and ensuring that they can react swiftly to sudden changes in their environment.