A 3-minute lesson from the New Hampshire course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
How safely you drive depends on your condition behind the wheel. Poor vision makes it harder to spot trouble in time, and fatigue slows your decisions. Being very tired can make you drive about as badly as a drunk driver.
Know the rule
Because seeing well is so important, drivers should have regular eye examinations.
Extreme tiredness, typically from mental or physical exertion, illness, repetitive tasks or lack of sleep. It can affect your vision and increase the time you need to make decisions.
Unlike drunk driving, there is no tool, such as a sleep breathalyzer, that lets police detect whether a crash was caused by too little sleep. Choosing not to drive tired is up to you.
You've been awake since 6 am and it's now 3 am, 21 hours later. Your driving is roughly like someone at 0.08% BAC. Get a ride or sleep first instead of driving.
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.
What should drivers who need corrective lenses avoid wearing at night?
Clear, untinted glasses
Prescription glasses entirely
Dark or tinted corrective lenses
Contact lenses of any kind
Answer: Dark or tinted corrective lenses
Drivers requiring corrective lenses should avoid dark or tinted lenses at night.