cdl practice test

Class A CDL Practice Test #2


Question #1 of 106

Why should you never use the trailer hand valve while driving?


It should not be used in driving because the trailer brakes will not be applied evenly.

It is ok to use it while driving on dry roads.

It should not be used in driving because it releases too much air from the system.

It should not be used in driving because of the danger of making the trailer skid.





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