FLORIDA CDL AIR BRAKES PRACTICE TEST

16. The one-way check valve:
keeps air from going out if the air compressor develops a leak.
keeps the axles in place.
supplies air to the trailer air tanks.
keeps your wheels from locking up when you brake hard.
17. When you apply the brakes, the brake shoes and linings are pushed against:
slack adjusters.
the air compressor.
the s-cam.
the inside of the brake drum.
18. How can you tell if your vehicle is equipped with ABS?
Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
Trailers will have yellow ABS malfunction lamps on the left side.
Look for yellow ABS malfunction lamps on the instrument panel.
All of the above.
19. You should NOT use the parking brakes if:
the brakes are too dry.
the brakes are very hot.
the brakes are cold.
All of the above.
20. You should always try to back toward the driver's side because:
you can more easily correct any steering errors.
backing toward the left side is more dangerous.
you can watch the rear of your vehicle out the side window.
None of the above.
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