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OKLAHOMA CDL DOUBLES TRIPLES PRACTICE TEST

11. In a dual air brake system, if one air system is very low on pressure:
either the front or rear brakes will not be operating fully.
you should drive and brake as you always have.
you should pump the brakes to restore pressure.
12. To reduce the chance of rollover, you should:
put the lightest parts of the cargo under the heaviest parts.
place the cargo as high as possible inside the trailer.
distributed the cargo as low as possible inside the trailer.
13. Pre-trip inspections of doubles and triples should:
be done by the shipper.
take more time than inspecting straight trucks.
take less time than inspecting straight trucks.
14. Which of the following statements about backing heavy vehicles is true?
Always back as quickly as possible.
Back to the right side so that you can see better.
You should avoid backing whenever you can.
15. During a walk around inspection of a double or triple trailer, make sure that the converter dolly air tank drain valve is _____ and the glad hands are ______.
open; not connected
closed; properly connected
open; properly connected
16. ABS:
helps you increase your following distance.
helps you increase your average speed.
does not decrease your stopping distance.
17. When driving at night, you should use ________ when you can.
emergency flashers
high beams
low beams
18. If you must stop on a one-way or divided highway, place your warning devices:
10 feet, 50 feet, and 150 feet toward the approaching traffic.
100 feet, 200 feet, and 300 feet toward the approaching traffic.
10 feet, 100 feet, and 200 feet toward the approaching traffic.
19. When you turn suddenly, which trailer is most likely to turn over?
The last trailer of triples
The rear trailer of doubles
The front trailer
20. When inspecting the coupling, how much space should there be between the upper and the lower fifth-wheel?
It depends on the trailer
½ inch
None.
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