Q.1
What should happen before the air pressure in an air brake system tank falls below 55 psi?
Q.2
If the safety relief valve in the air brake system releases air:
Q.3
Air brakes use ____ to function.
Q.4
If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
Q.5
If the safety relief valve in the air brake system releases air:
Q.6
____ make up the emergency brake system.
Q.7
Truck tractors with air brakes built on or after March 1, 1997 must have:
Q.8
The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
Q.9
To make a stop in a vehicle equipped with air brakes, the driver should:
Q.10
An emergency brake must be controlled by:
Q.11
Some air brake systems introduce alcohol into the system to:
Q.12
You must have an air brake endorsement:
Q.13
An air compressor governor controls:
Q.14
Which of the following is not part of a vehicle’s air brake system?
Q.15
In a dual air brake system, if one air system is very low on pressure:
Q.16
What helps prevent wheel lockup when braking?
Q.17
What kind of brakes do most newer heavy-duty trucks use?
Q.18
The leakage rate for a triple combination vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
Q.19
What color malfunction lamps do vehicles equipped with ABS have?
Q.20
When parking, you should not use the parking brake if:
Q.21
While driving, ____ generally holds spring brakes in place.
Q.22
When leaving your vehicle unattended:
Q.23
When operating a vehicle with a dual air brake system, the driver should:
Q.24
On flat surfaces, wheel chocks:
Q.25
To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
0 h : 0 m : 1 s