A 2-minute lesson from the Maryland course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Sleepiness slows reaction time, decreases awareness and impairs judgment, just like drugs or alcohol, and it can significantly raise your crash risk. Learn the warning signs and act on them.
Know the rule
Sleepiness slows reaction time, decreases awareness, and impairs judgment, just like drugs or alcohol.
Two hours into a night drive you realize you can't remember the last few miles and just missed your exit. Those are danger signs: find a safe place to rest or hand the wheel to another driver.
Put it into practice
A friend with a sleep disorder offers to drive the late shift of a long trip. That's a higher-risk driver. Plan rest stops and swap drivers before anyone gets drowsy.
Check your understanding
Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.
How does drowsiness affect your driving ability, according to the handbook?
It only affects your mood, not your driving
It has no measurable effect on safety
It only matters on long highway trips
Slows reactions and impairs judgment
Answer: Slows reactions and impairs judgment
Sleepiness slows reaction time, decreases awareness, and impairs judgment, just like drugs or alcohol.