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CDL DOUBLES TRIPLES PRACTICE TEST HAWAII

11. If your trucks has a high center of gravity, which of the following is true for curves?
You should slow down, as your truck can roll over at the posted speed limit for the curve.
You should travel at the posted speed limit.
Reduce your speed to a crawl.
12. When the wheels of a trailer lock up, which of the following is most likely to occur?
The trailer will tend to swing around (trailer jackknife).
The trailer will the trailer has overturn.
The trailer will tend to push the towing vehicle sideways (tractor jackknife).
13. Pre-trip inspections are:
recommended.
required only for trips of more than 50 miles.
required by law
14. To make the brakes work, air brakes use:
hydraulic air.
nitrogen.
compressed air.
15. Which of the following statements is true?
Carrying a properly charged and rated fire extinguisher will help prevent fires.
Poor cargo ventilation is a common cause of fire.
There is no way that short circuits due to damaged insulation can cause a vehicle fire.
16. When backing, you should:
only use mirror on the driver's side.
back quickly.
use the mirrors on both sides.
17. To prevent rollover, you should:
go slowly around turns.
keep the cargo as close to the ground as possible.
All of the above.
18. When you double your speed, the braking distance is:
3 times longer.
the same.
4 times longer.
19. To start moving without rolling back, you should:
put on the parking brake whenever necessary.
partly engage the clutch before you take your right foot off the brake.
All of the above.
20. Before driving a vehicle with a dual brake brake system, the driver should:
allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.
wait at least 10 minutes before driving.
pump the brake pedal 10 times to build pressure.
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