CDL AIR BRAKES PRACTICE TEST - DISTRICT OF COLUMBIA

11. To use the controlled braking method in an emergency, you should:
apply your brakes all the way, and release the brakes when the wheels lock up.
pump the brake pedal 3 times.
apply the brakes as hard as you can without locking the wheels.
apply the brakes when the wheels lock up.
12. The air storage tanks:
are connected to the engine through gears or a v-belt.
protects the tank and the rest of the system from too much pressure.
are used to hold compressed air.
stop the compressor from pumping air.
13. The air tanks should be drained completely to remove:
carbon monoxide.
air.
water and oil.
the radiator cap.
14. Front wheel braking is good:
only in good weather.
under all conditions.
Never.
only in wet conditions.
15. You should check air pressure and temperature gauges:
at the end of each trip.
every time you stop.
at the beginning of each trip.
as often as is practical.
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