Ace Your DMV Written Test with our Guaranteed Cheat Sheet.
Cheat sheet
Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
A.  10 psi
B.  25 psi
C.  50 psi
D.  100 psi
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
Answer Statistics
11.18 % of our users get this question wrong.
This question's difficulty is Medium

Pass your DMV Written Test with flying colors

Ace Your DMV Written Test
Get your Cheat Sheet Now!