When you become too drowsy to focus on driving, your safest choice is to:

When you are tired, you cannot drive as safely as you can when you are rested. Your reactions and decision-making skills are greatly reduced. Break long driving periods into two-hour segments. If you become drowsy, pull off the road and rest.

• Pull off the road and rest.
• Drink a large energy drink.
• Open all the windows and turn on the air conditioning.
• Talk to a friend on the phone.