Driving in Special Conditions — CDL General Knowledge Practice Test
36 questions in this topic · 30 drawn at random this round
Why should you go slowly enough in very hot weather, especially in the desert?
Session Progress
This CDL General Knowledge Driving in Special Conditions practice set has 36 practice questions based on the official exam materials, each with an instant explanation. You need 80% on the real CDL General Knowledge knowledge test to pass.
Sample questions
Three questions from the Driving in Special Conditions bank with the correct answer and an explanation. The practice quiz above draws 30 questions at random from the same bank.
Why is driving at night more dangerous than driving in daylight?
- Drivers can't see hazards as quickly, so they have less time to respond — Correct answer
- Vehicles always travel faster at night
- Brakes work less well in the dark
- Tires lose traction once the sun goes down
Explanation: At night drivers can't see hazards as quickly as in daylight, so they have less time to respond and are less able to avoid a crash. English term: hazard（危险 / peligro）.
Handbook: Special Conditions — Driving at Night
Why should you avoid wearing dark or tinted corrective lenses at night?
- They cut down the light you need to see clearly at night — Correct answer
- They are illegal in every state
- They scratch more easily than clear lenses
- They fog up faster at night
Explanation: Tinted lenses cut down the light you need to see clearly under night driving conditions, even if you think they help with glare. English term: glare（眩光 / deslumbramiento）.
Handbook: Special Conditions — Driving at Night
After being blinded by bright light at night, about how long can it take to recover from the glare?
- Several seconds — Correct answer
- Less than a tenth of a second
- Several minutes
- Recovery is instant
Explanation: It can take several seconds to recover from glare; even two seconds of glare blindness is dangerous — a vehicle at 55 mph travels more than half a football field in that time. English term: glare（眩光 / deslumbramiento）.
Handbook: Special Conditions — Driving at Night