When should drivers of commercial vehicles regularly check their mirrors?

Drivers of commercial vehicles should check their mirrors frequently as conditions change because it is essential for maintaining awareness of the surroundings and ensuring safety on the road. Regular mirror checks allow drivers to monitor blind spots, observe vehicles entering or exiting traffic, and assess the behavior of other road users. Given the dynamic nature of driving, including fluctuating traffic conditions, changes in weather, and the movement of pedestrians and cyclists, consistent mirror checks are crucial for safe vehicle operation.

This practice helps in preventing accidents and making informed decisions as conditions evolve. It is important to remain proactive rather than reactive, which underscores the reasoning behind the necessity of frequent mirror checks rather than limiting them to specific moments, such as changing lanes or just before starting a trip.