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KY CDL DOUBLES TRIPLES PRACTICE TEST

11. Rough acceleration can cause:
mechanical damage.
damage electrical and brake lines.
tire damage.
All of the above.
12. If your vehicle thumps or vibrates heavily, it may be a sign that:
the engine belt is loose.
the brakes have failed.
you need to shift up.
one of the tires has gone flat.
13. Longer combination vehicles have the tendency to swing wide on turns. This is called:
hydroplaning.
off-tracking.
rollover.
jackknifing.
14. Headache racks:
can blind other drivers.
help you keep weights within legal limits.
protect you from being hit by your cargo.
None of the above.
15. When driving with more than one trailer, the _______ trailer should be the first one behind the tractor.
shortest
heaviest
lightest
longest
16. When backing, you should:
back and turn toward the right side whenever possible.
use the mirrors on both sides.
only use mirror on the driver's side.
back quickly.
17. In a dual air brake system, if one air system is very low on pressure:
you should pump the brakes to restore pressure.
either the front or rear brakes will not be operating fully.
you should drive and brake as you always have.
the effect won't be noticeable for the first 50 miles.
18. Dollies with ABS are required to have a malfunction lamp:
on the right side.
on the front.
on the rear.
on the left side.
19. Blocking and bracing are:
used to keep cargo from sliding and to prevent movement of cargo.
coupling devices used to connect the service air lines from the truck or tractor to the trailer.
driving techniques used to regain control when your drive wheels start to skid.
None of the above.
20. Strong winds can make it difficult to stay in your lane especially when driving:
heavier vehicles.
vehicles with ABS.
lighter vehicles.
flatbed trailers.
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