When should you check your mirrors while driving a commercial vehicle?

Answer: C — Every 5 to 8 seconds and when changing lanes or merging

Checking your mirrors every 5 to 8 seconds and when changing lanes or merging is crucial for safe driving in a commercial vehicle. This practice ensures that you are constantly aware of your surroundings, which is essential for preventing accidents and maintaining safe operation on the road. Commercial vehicles have significant blind spots, and frequent mirror checks help mitigate the risks associated with these blind spots by allowing the driver to monitor other vehicles, pedestrians, and obstacles that may come into the vicinity. Maintaining such a regular interval for mirror checks helps in making timely decisions and adjusting actions based on current traffic conditions. Additionally, checking mirrors while changing lanes or merging is vital, as these maneuvers particularly increase the need for situational awareness to ensure that other road users are not in a position that could lead to collision during the transition. Such proactive monitoring contributes to overall road safety and is part of good driving habits for commercial operators.