What effect does tiredness have on your vision while driving?

Tiredness significantly impacts your vision while driving, primarily by reducing your peripheral vision. When you are fatigued, your ability to perceive objects and movements outside of your direct line of sight diminishes. This narrowing of the field of vision can lead to delayed reactions to potential hazards, as you may not notice vehicles, pedestrians, or obstacles approaching from the sides. This is critical for safe driving, as peripheral vision plays a substantial role in awareness and situational assessment on the road.

Being tired also affects cognitive functions such as attention and focus, which can further impair your driving performance. It can create challenges with recognizing and responding to rapidly changing situations, making it essential to be fully alert and well-rested before getting behind the wheel to ensure the safety of all road users.