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ARKANSAS CDL DOUBLES TRIPLES PRACTICE TEST

11. When backing, it is best to:
use a helper whenever possible.
back toward the passenger's side when possible.
try to back in the direction of the drift.
use only the passenger's side mirror.
12. Before connecting the converter dolly to the rear trailer, make sure that:
the shut-off valves at the rear of the first trailer are open.
the locking jaws rest on the kingpin.
the kingpin rests on the fifth-wheel.
the trailer height is slightly lower than the center of the fifth-wheel.
13. When connecting to the rear trailer, the trailer height should be:
lower than the center of the fifth-wheel.
higher than the center of the fifth-wheel.
the same height as the fifth-wheel.
None of the above.
14. When backing a trailer, you should turn the steering wheel to the right to make the trailer go left (or vice versa). Once the trailer starts to turn, you should:
turn the wheel the other way to follow the trailer.
keep backing up.
turn the wheel more  in the direction you want to go.
None of the above.
15. If driving a heavy vehicle, you should:
stay in the left lane.
try to pass other vehicles going uphill.
avoid braking.
stay in the right lane.
16. To make the brakes work, air brakes use:
nitrogen.
hydraulic air.
compressed air.
carbon monoxide.
17. Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
The weight of a cargo
Rain
Traffic
Repaving of the road
18. Alcohol:
improves muscle coordination.
impairs depth perception.
does not affect judgement.
improves reaction time.
19. What factors can cause brakes to fade?
Slippery surfaces and shaded areas.
Dirt roads and in unpaved yards.
Excessive heat and brakes out of adjustment.
Gravel and tar.
20. Driving in very hot weather:
should never be done.
can increase tire pressure.
can make it difficult to stay in your lane.
can decrease oil pressure.
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