Active Practice Session

Air Brakes #2

Question 22

Which of the following statements about spring brakes is correct?

A Consisting of strong springs that are kept in place by air pressure when driving. B Until your air pressure drops to a particular range, often 20 to 30 psi, spring brakes will not exert its full effect. C Emergency brakes on a truck or tractor that activate when the air pressure gets too low. D All of the above

Select an answer to continue.