Questions appearing on this CDL practice test:
Air loss in a straight truck or bus should not be more than _____ with the engine off and the brakes applied.
What activates the stop switch?
A straight truck or bus air brake system should not leak at a rate of more than ____ psi per minute with the engine off and the brakes released.
Vehicles with air brakes must have:
Slack adjusters should not have any more than _____ of play?
What is the best way to test your vehicle's low air pressure warning signal?
Which vehicles must have low air pressure warning signals?
On a long or steep downgrade, once you have reached your "safe" speed, brake until you are traveling
To check the slack adjusters on S-cam drum brakes, you should first
Before starting down a hill, you should be in the proper gear
To apply the parking brakes under normal conditions,
Slack adjusters are
Which of the following is NOT part of the air brake system?
Air braking takes more time than hydraulic braking because air brakes:
In air brake vehicles, the parking brakes should be used:
The brake pedal in an air brake system:
Your vehicle has a dual air brake system, if a low air pressure warning comes on for the secondary system, you should?
The tractor protection valve
What is the first thing you should do if the low air pressure warning comes on?
When should you use the parking brake?
The supply pressure gauge shows the driver how much pressure:
Which of the following is NOT part of the drum brake?
The safety release valve will blow at _____ psi?
In an emergency stop you should?
What are spring brakes?
