CDL PRACTICE TEST - GENERAL KNOWLEDGE (NEBRASKA)

21. Whenever you back up with a trailer, position your vehicle so you can back in a straight line. If you must back on a curved path, back toward:
Neither side (do not back).
the driver's side.
Either side.
the right side.
22. Containerized loads are used:
when transporting liquids.
when the cargo has been or will be carried by rail or ship.
when the cargo exceeds the weight limit.
when transporting explosives.
23. If a trailer does not have spring brakes, to keep the trailer from moving you should:
close the brake valve.
use the service brakes.
park on a slight decline.
use wheel chocks.
24. When using a fire extinguisher on a fire, you should:
stay as far away from the fire as possible.
get as close to the fire as possible.
aim the extinguisher at the top of the fire.
All of the above.
25. When driving in heavy traffic, the safest speed is:
slower than the speed of the traffic.
the posted speed limit.
5 mph below the posted speed limit.
the speed of other vehicles, up to the posted limit.
26. In coming down a long, steep downgrade, which of the following is NOT a factor you should consider to select an appropriate safe speed?
Road conditions
Steepness of the grade
Your schedule
Weather
27. To control your speed on a downgrade, you should:
coast in neutral.
use controlled braking.
use engine braking.
fully apply the brakes.
28. When driving trucks with trailers, drivers should:
decrease their following distance.
push the brake pedal to the floor when braking.
make quick lane changes.
avoid making sudden movements with the steering wheel.
29. If another driver is following you too closely, you should:
immediately pull over to the side of the road.
turn on your warning flashers.
decrease your following distance.
None of the above.
30. Retarders:
improve traction.
increase fuel efficiency.
help to increase brake pressure.
can be noisy and may not be permitted everywhere.
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