Air Break Practice Test
Results
-
#1. As air pressure builds during your pre-trip inspection of the air brakes, the low air pressure warning device should deactivate at
The low air pressure warning device must activate when pressure falls to 60 psi (414 kPa) and deactivate when pressure rises to the same level – 60 psi (414 kPa). However, it activates at even higher pressures in some vehicles.