What should a driver do if they feel drowsy while driving?

When a driver feels drowsy while driving, the safest course of action is to pull over and rest or switch drivers. This option prioritizes the driver's safety and the safety of others on the road. Fatigue significantly impairs reaction time, decision-making, and overall driving ability, similar to the effects of alcohol. By stopping the vehicle in a safe location, the driver can take a break and recharge.

Other strategies, such as turning up the radio or drinking coffee, may offer temporary distractions or boosts in alertness but do not address the underlying issue of fatigue. A short nap can help, but it's essential to ensure that one is parked safely and legally before doing so, and it may not always be practical. Thus, pulling over to rest or changing drivers is the most effective way to combat drowsiness and maintain road safety.