DOUBLES TRIPLES TEST AK - CDL PRACTICE TEST

11. If you are feeling sleepy, you should:
pull off the road and rest or take a nap.
increase your speed to get to the destination quicker.
slow down and drive on the shoulder of the road.
12. The trailer hand valve should:
never be used for parking.
be used in driving.
never be used to test the trailer brakes.
13. During a trip you need to inspect the cargo and its securing devices:
after every break you take.
every 3 hours or 150 miles.
All of the above.
14. If there is a fire in your vehicle, do NOT:
park in an open area.
pull into a service station.
notify emergency services.
15. When backing, you should:
only use mirror on the driver's side.
back quickly.
use the mirrors on both sides.
16. Which of the following statements about drivers fixing an engine or changing a tire is true?
They often do not pay attention to roadway traffic.
They usually pay attention to the danger roadway traffic is to them.
Roadway traffic is not a danger to them.
17. If your vehicle thumps or vibrates heavily, it may be a sign that:
you need to shift up.
one of the tires has gone flat.
the brakes have failed.
18. The safety valve installed in the first tank the air compressor pumps air is set to open:
if there is too little pressure.
if there is too much pressure.
at 30 psi.
19. While crossing railroad tracks, you should:
shift up.
not shift gears.
shift down.
20. When coupling twin trailers, the more heavily loaded semitrailer should:
have its brakes locked.
be in the rear.
be in first position behind the tractor.
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