Question 7 of 25
Score: 0/0During normal driving, what holds the spring brakes back?
ExplanationSpring brakes are held back by air pressure during normal driving. If air pressure is lost, the springs automatically apply the brakes for safety.
Missing these? The CDL Study Bundle turns the rules you keep getting wrong into one quick reference.
Next Question →
Did you know? Memorize the order: low-air warning first, then the spring brakes lock. The test checks that sequence.
← Back to Air Brakes tests