CDL AIR BRAKES PRACTICE TEST - IDAHO

11. You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
5 mph
15 mph
10 mph
12. The air compressor is connected to:
the engine.
the radiator.
the transmission.
13. The service brake applies and releases:
the parking brake when you use the parking brake control.
the brake in an emergency situation.
the brake when you use the brake pedal during normal driving.
14. When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
When you are conducting your pre-trip inspection.
Never.
Only while you are taking a rest break.
15. Weight that is loaded so there is a high center of gravity:
reduces the chance that the load will shift to the side or fall off.
makes a vehicle easier to handle.
causes greater chance of rollover.
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