ND CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST

11. If you triple the speed from 20 to 60 mph the impact and braking distance is:
9 times greater.
3 times greater.
12 times greater.
6 times greater.
12. When driving on a long and/or steep downgrade, drivers should:
release the clutch.
use a low gear and release the brakes.
select an appropriate safe speed, and then use a low gear.
accelerate.
13. In a dual air brake system, if one air system is very low on pressure:
the effect won't be noticeable for the first 50 miles.
you should drive and brake as you always have.
you should pump the brakes to restore pressure.
either the front or rear brakes will not be operating fully.
14. Which of the following is NOT a type of retarder?
Hydraulic
Engine
Anti-lock
Electric
15. The best way to see the rear and sides of your vehicle is to:
roll down your passenger-side window.
check your mirrors regularly.
use your rear view camera.
roll down your driver's window.
16. For safety during a trip, you should:
use your senses to check for problems.
shift into a lower gear.
pull off the road and stop.
drive on the shoulder of the road.
17. When driving on wet roads, you should:
reduce speed by 60%.
reduce speed by about one-third.
pull of the road and get some rest.
follow the vehicle ahead more closely than under ideal driving conditions.
18. Checking the automatic transmission fluid level may require:
the engine to be running.
the 4-way emergency flashers to be activated.
the vehicle to be parked downhill.
you to pump the brake.
19. Convex mirrors:
show a wider area than flat mirrors.
make objects appear larger than they really are.
make things appear closer than they really are.
All of the above.
20. When driving on long and/or steep downgrades, to select an appropriate safe speed you should consider:
the total weight of the vehicle and cargo.
the road conditions.
the length of the grade.
All of the above.
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