Fleet managers should remind drivers about how to drive safely in dense fog. Fog can come on suddenly — and it can reduce a driver's visibility to one-quarter of a mile or less.
Video: Coping with Cognitive Distraction
At some point every driver will experience moments of tunnel vision — a sort of mental "checking out" that means they are no longer fully focused on the task at hand. In those moments, a driver may not see debris in the road or even an oncoming car.