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CDL DOUBLES PRACTICE TEST MONTANA

11. To prevent rollover, you should:
drive in the left lane whenever possible.
drive faster on ramps and off ramps.
drive slower around corners.
All of the above.
12. To warn drivers behind you when you see you'll need to slow down, you should:
sound your horn.
use your headlights.
flash the brake lights.
turn off your lights.
13. When more cargo is piled up in a truck, the center of gravity moves:
higher up from the road.
to the left side of the truck.
closer to the ground.
to the right side of the truck.
14. As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
air escaping from the open valve.
a thumping sound.
a mechanical vibration.
the service line valve close.
15. When driving at night, you should use ________ when you can.
indicator lights
low beams
high beams
emergency flashers
16. Empty trucks:
require a shorter stopping distance than full trucks.
require a greater stopping distance than full trucks.
require the same stopping distance than full trucks.
None of the above.
17. When coupling double trailers, you can secure the second trailer by:
setting the trailer emergency brakes.
chocking the wheels.
using the trailer spring brakes.
All of the above.
18. Most heavy-duty vehicles use:
pressure brakes.
air brakes.
solid brakes.
hydraulic brakes.
19. Right after it starts to rain, the road is very slippery. Why?
Because rain is very slippery.
Because the water mixes with oil left on the road by vehicles.
Because black ice may form on the road.
None of the above.
20. If there is a fire and you are not sure what to use to put it out, you should:
use a fire extinguisher.
wait for firefighters.
use water.
use dry powder.
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