Questions appearing on this CDL practice test:
The air compressor governor controls:
Of the choices below, the first thing to do when a low air pressure warning comes on is:
Air brake equipped vehicles must have:
Modern air brake systems combines three different systems. They are the service brakes, the parking brakes and the:
If you must make an emergency stop, you should brake so that you:
The driver must be able to see a warning that is given before air pressure in the service air tanks falls below:
The most common type of foundation brakes found on heavy vehicles is the:
When driving down a long steep hill you should:
The modulating control valve is?
Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
Which of the following is not part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
Which of the following are true about a dual air brake system?
How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
Spring brakes are
In the event of a brake system failure, the emergency brake system uses __________ to stop the vehicle.
Repeatedly pressing and releasing (fanning) the brake pedal may result in
If the spring brakes are on, when should you push the brake pedal?
You'll know that your brakes are fading if
A converter dolly with antilock brakes (ABS) is required to have
Which of the following is the most important thing about hard braking?
In controlled braking, you
If oil and water collects in the air tanks, what could happen to the brakes?
S-cam drum brakes have an S-cam in each brake chamber. Why is it called an "S-cam?"
To test the air service brakes,
When can you leave your truck unattended without first applying the parking brakes or chocking the wheels?