CDL GENERAL KNOWLEDGE TEST (NE) - PRACTICE TEST

21. The height of a vehicle's center of gravity is important for safe handling. Why?
Trucks with a high center of gravity have better traction.
A high center of gravity means you are less likely to tip over.
Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
All of the above.
22. Your driver license doesn't have the hazardous materials endorsement. You can drive a vehicle that carries hazardous materials if:
the vehicle does not require placards.
one of your passengers has the hazardous materials endorsement.
you are transporting hazardous materials for less than 50 miles.
All of the above.
23. To prevent drowsiness you should:
keep the cab warm.
drive with a passenger.
eat frequently.
drive at night.
24. When driving at night you should:
use your high beams when it is safe and legal to do so.
keep the interior light on.
always use low beams.
All of the above.
25. Which of the following is a common cause of fire?
Improperly sealed cargo.
Under-inflated tires and duals that touch.
Short circuits due to loose connections.
All of the above.
26. With a dual air brake system:
one system is the main braking system while the other is a back-up system.
each system shares the same lines and hoses.
each system has its own air tanks, hoses and lines.
each system shares air tanks.
27. If your vehicle is hydroplaning, you should:
accelerate to get through the water as quickly as possible.
use the brakes to slow down.
release the accelerator and push in the clutch.
None of the above.
28. The minimum tire tread depth for front tires is:
4/32 inch
2/32 inch
4/16 inch
8/32 inch
29. Fatigue:
increases the chance of an accident.
does not impair vision and judgment.
has little or no effect on driving.
can easily be prevented by drinking coffee.
30. One way to prevent hydroplaning is to:
have less than 4/32 inch tread depth in every major groove on front tires.
use the controlled braking method.
make sure you have enough tread on your tires.
take curves at higher speeds.
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