header bg
8 arrow_forward 0 done arrow_forward 0 done_all

If the safety relief valve in the air brake system releases air

A There is something wrong with the brakes
Explaination
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.
B The compressor needs more air
C You may continue driving