What is the largest cause of crashes in driving in low visibility conditions, like rain, snow, and fog?

The largest cause of crashes in low visibility conditions, such as rain, snow, and fog, is drivers going too fast for conditions. When visibility is reduced due to weather factors, the stopping distance required increases, and the ability to react to sudden obstacles or changes in the driving environment diminishes. If drivers do not adjust their speed to match these conditions, they may find themselves unable to stop in time to avoid a collision or to navigate safely through reduced visibility.

In adverse weather, such as heavy rain or snow, the roads can be slippery, further increasing the risks associated with driving at inappropriate speeds. A driver who is traveling too quickly may misjudge the distance they need to safely stop or may not be able to control their vehicle adequately, leading to accidents.

While factors like tailgating, failure to use headlights, and distracted driving can contribute to crashes, the primary issue in low visibility situations is often related to the inability to properly gauge speed and stopping distance, making it essential for drivers to slow down and proceed cautiously.