CALIFORNIA DOUBLES TRIPLES PRACTICE CDL TEST

11. Driving in very hot weather:
can increase tire pressure.
should never be done.
can decrease oil pressure.
12. When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
The front trailer is twice as likely to turn over as the tractor.
All trailers are equally likely to turn over.
The rear trailer is twice as likely to turn over as the tractor.
13. When driving in very hot weather, you may have to:
decrease your following distance.
reduce your speed to prevent overheating.
increase your speed until the tires cool off.
14. When connecting to the rear trailer, the trailer height should be:
lower than the center of the fifth-wheel.
the same height as the fifth-wheel.
higher than the center of the fifth-wheel.
15. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
2/32
4/32
1/32
16. _________ rigs are much more likely to roll over in an accident than _________ rigs.
Fully loaded ; overloaded
Empty ; fully loaded
Fully loaded ; empty
17. Which of the following statements about doubles/triples is true?
Doubles/triples may have to go faster around corners than single trailer combination vehicles.
Doubles/triples are more stable than other CMVs.
A safe speed on a curve for a single trailer combination vehicle may be too fast for a double/triple.
18. Cargo should be properly covered:
to block your view or someone else’s.
to protect people from spilled cargo.
to protect the weather from the cargo.
19. As you approach off ramps and on ramps, remember:
that downgrades make it easier to reduce speed.
that the posted speed limit may not be safe for larger vehicles.
to always brake and turn at the same time.
20. Blocking is used to:
keep the cargo from sliding.
protect people from spilled cargo.
protect the cargo from weather.
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