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CDL DOUBLES PRACTICE TEST ALASKA

11. Because of the "crack-the-whip" effect, doubles and triples:
are more likely to run out of gas than other combination vehicles.
are much slower than other combination vehicles.
are more likely to turn over than other combination vehicles.
12. During a walk around inspection of a combination vehicle, drivers should check that:
the glide plate is securely mounted to the trailer frame.
all locking pins are present and locked in place.
All of the above.
13. The space under a heavily loaded vehicle can be very small. This can cause problems:
when crossing railroad tracks.
on dirt roads.
All of the above.
14. Blocking and bracing are:
driving techniques used to regain control when your drive wheels start to skid.
coupling devices used to connect the service air lines from the truck or tractor to the trailer.
used to keep cargo from sliding and to prevent movement of cargo.
15. The tractor protection valve:
keeps air in the brake system should the trailer develop a bad leak.
prevents the trailer from being accidentally released.
keeps your wheels from locking up when you brake hard.
16. When driving trucks with trailers, drivers should:
push the brake pedal to the floor when braking.
avoid making sudden movements with the steering wheel.
make quick lane changes.
17. Large vehicles take longer to stop when they are:
empty.
fully loaded.
heavily loaded but not fully loaded.
18. Hanging meat in a refrigerated truck:
can be a very unstable load.
will not affect safe driving ability.
should never be transported.
19. Dual tires:
should always come in contact with each other.
should come in contact with each other whenever possible.
should not come in contact with each other.
20. Under a pressurized system, the radiator cap:
should be removed when the coolant is hot.
should never be removed until the system has cooled.
should never be hot.
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