What can occur if doing a visual test on your mirrors just once?

Regularly checking and adjusting mirrors is crucial for maintaining optimal visibility while driving. Performing a visual test on your mirrors just once may give you a fleeting sense of your surroundings, but mirror positions can easily change due to vibrations from the vehicle, alterations in load, or even minor accidents. If adjustments aren't periodically checked, the view provided by the mirrors could become inadequate, leading to blind spots that could pose safety hazards.

Over time, without frequent checks, reflections might not accurately represent what's happening behind and alongside the vehicle, potentially resulting in collisions or near-misses. Thus, having to readjust your mirrors later indicates that one-time adjustments may not suffice for safe driving practices. This understanding reinforces the importance of regular mirror checks as part of safe driving behavior.