Ace Your DMV Written Test with our Guaranteed Cheat Sheet.
Cheat sheet
Question
When operating a vehicle with a dual brake system, a driver should:
Answers
A.  Let the vehicle warm up before driving to ensure that fuel reaches the engine.
B.  Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
C.  Begin driving just after the vehicle starts.
D.  Pump the pedal about 20 times to build pressure, then begin driving.
Explanation
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum pressure of 100 psi in both the primary and secondary systems.
Answer Statistics
6.56 % of our users get this question wrong.
This question's difficulty is Medium

Pass your DMV Written Test with flying colors

Our Latest Videos
Ace Your DMV Written Test
Get your Cheat Sheet Now!