ALABAMA CDL AIR BRAKES PRACTICE TEST

16. ABS malfunction lamps are located:
on the instrument panel.
on the driver'door.
under the hood.
None of the above.
17. Most heavy-duty vehicles use:
single air brake systems.
pump-the-brake systems.
triple air brake systems.
dual air brake systems.
18. If your ABS malfunctions:
you still have normal brake functions.
the service brake will not work.
the parking brakes will not work.
you should immediately come to a complete stop.
19. Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
The letters "ABS" are printed on the side of the steering wheel.
Wheel speed sensor wires are coming from the back of the brakes.
It has yellow ABS malfunction lamps.
It was built after March 1, 1998.
20. When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
the rear trailer of a triple.
worn tire tread.
rearward amplification.
strong wind.
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