Air Break Practice Test

Results

#1. You're driving a vehicle equipped with air brakes. If the low air pressure warning signal comes on, what should you do?

Drive slowly with extreme caution.

Pull over and stop.

Report the problem after you've completed your trip.

Wait for the emergency brakes to come on.

A low air-pressure warning signal indicates that reservoir air pressures have dropped below 60 psi (414 kPa), which means a serious air brake system safety hazard. Bring your vehicle to a safe stop as soon as possible and try to find the cause of the low pressure. If the air pressure drops much lower, your service brakes may fail completely.