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CDL Air Brakes Final Exam Study Guide Test.
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CDL Air Brakes Final Exam Study Guide Test. Air loss in a straight truck or bus should not be more than how much PSI with the engine off and the brakes on? - CORRECT ANSWER 3 PSI in one minute To make an emergency stop with air brakes, using the stab braking method, you should - CORRECT ANS...

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  • August 15, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cdl air brakes final exam study guide test

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CDL Air Brakes Final Exam Study Guide
Test.

Air loss in a straight truck or bus should not be more than how much PSI with the engine off and the
brakes on? - CORRECT ANSWER 3 PSI in one minute



To make an emergency stop with air brakes, using the stab braking method, you should - CORRECT
ANSWER Brake as hard as you can



get off brakes when wheels lock



get back on brakes when wheels start rolling again



All vehicles with air brakes must have what signal? - CORRECT ANSWER Low air pressure warning signal



It is accepted that too much heat caused by using your brakes too often can also cause what? - CORRECT
ANSWER brake to fade or fail



When is it ok to leave your truck unattended without applying the parking brakes and choking the
wheels? - CORRECT ANSWER Never



You should know that your brakes are fading when you have to do what? - CORRECT ANSWER push
harder on the brake pedal to control your speed on a downgrade



The safety valve discharges automatically at what pressure? - CORRECT ANSWER 150



What is a dual airbrake system? - CORRECT ANSWER 2 brake system



one operates front brakes

, one operates back brakes



If air pressure is not built up within the correct amount of time, then what will happen? - CORRECT
ANSWER air pressure may drop to a low point while driving, requiring an emergency stop



How often should you drain air tanks? - CORRECT ANSWER Daily



A slack adjusters free play needs to be adjusted if it is more than about how many inches when you pull
hard on it? - CORRECT ANSWER 1 inch



In ideal conditions, a truck or bus with an air brake going at 55 mph would require a stopping distance of
how many feet? - CORRECT ANSWER more than 300 feet



If air pressure is not built up within the correct amount of time, then what will happen to the air
pressure? - CORRECT ANSWER drop to a low point while driving



requiring an emergency stop



It is accepted that too much heat caused by using your brakes too often can also cause what? - CORRECT
ANSWER Brake to fade or fail



What does the governor control? - CORRECT ANSWER when air compressor will pump into air storage
tanks



To make an emergency stop with air brakes, using the stab braking method, you should do what? -
CORRECT ANSWER Brake as hard as you can



get off brakes when wheels lock



get back on brakes when wheels start rolling

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