What is the best countermeasure for drowsy driving?

Pulling over safely and stretching is the most effective countermeasure for drowsy driving because it addresses the underlying issue of fatigue directly. When a driver feels drowsy, their ability to focus and react diminishes significantly, increasing the risk of accidents. Stopping to stretch can help re-energize the body, promote blood circulation, and provide a mental break.

In contrast, consuming caffeine, while it may provide a temporary boost in alertness, does not resolve the fatigue itself and can lead to crashes if the driver fails to get adequate rest afterward. Playing loud music might keep a driver awake momentarily, but it does not engage the body or significantly enhance alertness. Similarly, driving faster is a dangerous response to fatigue, increasing the chances of losing control or making poor decisions on the road. Therefore, safely pulling over and taking a break is a comprehensive approach to ensuring safety while addressing drowsiness effectively.