cdl practice test

Air Brake CDL Practice Test


Question #1 of 45

The air pressure should not drop more than _____ in one minute during an Applied Leakage Test.


2 psi for single, 3 psi for a combination, and 5 psi for a combination of three or more vehicles.

3 psi for single, 4 psi for a combination, and 5 psi for a combination of three or more vehicles.

3 psi for single, 4 psi for a combination, and 6 psi for a combination of three or more vehicles.

4 psi for single, 5 psi for a combination, and 6 psi for a combination of three or more vehicles.





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