Ace Your DMV Written Test with our Guaranteed Cheat Sheet.

Cheat sheet
What kind of brakes do most newer heavy-duty trucks use?
A.  Single air brakes
B.  Dual air brakes
C.  Triple air brakes
Most newer heavy-duty vehicles use dual air brake systems. A dual air brake system has two separate air brake systems which use a single set of brake controls.
Answer Statistics
6.27 % 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!