GA CDL AIR BRAKE PRACTICE TEST
CORRECT 100%
If you do not have an automatic tank drain, when should you drain your air tanks? -
ANSWER At the end of each working day
When should you use the parking brakes and air brakes at the same time? - ANSWER
Never
To correct a drive-wheel braking skid, you should - ANSWER stop braking turn quickly
and counter steer
During your final air brake check, if the air pressure does not build up fast enough, -
ANSWER the air may drop during driving
As part of your vehicle inspection test, if your vehicle is equipped with air brakes and
has a trailer, you will inspect the air connections between the truck or tractor and the
trailer. Make sure that the ________ are locked in place and free of damage or air
leaks. - ANSWER Glad hands
On a long or steep downgrade, once you have reached your "safe" speed, brake until
you are traveling - ANSWER 5 mph slower
If you must make an emergency stop, brake so that - ANSWER your vehicle should
stay in a straight line
The safety valve is set to automatically reduce pressure at - ANSWER 150 PSI
In which of the following situations should you NOT apply the parking brakes? -
ANSWER If the brakes are very hot
When you pull hard on a slack adjuster, if it has more than ________ of free play, the
slack adjuster may need adjustment. - ANSWER 1 inch
How would you check your truck's slack adjusters? - ANSWER Park on ground level,
turn off the parking brakes, and pull hard on each slack adjuster. It should'nt move more
than 1 inch
You are on a steep downgrade and have reached your safe speed of 40 mph. You
would apply the service brakes until your speed drops to - ANSWER 35 mph
To apply the parking brakes under normal conditions, - ANSWER Let air out the brake
chambers.
CORRECT 100%
If you do not have an automatic tank drain, when should you drain your air tanks? -
ANSWER At the end of each working day
When should you use the parking brakes and air brakes at the same time? - ANSWER
Never
To correct a drive-wheel braking skid, you should - ANSWER stop braking turn quickly
and counter steer
During your final air brake check, if the air pressure does not build up fast enough, -
ANSWER the air may drop during driving
As part of your vehicle inspection test, if your vehicle is equipped with air brakes and
has a trailer, you will inspect the air connections between the truck or tractor and the
trailer. Make sure that the ________ are locked in place and free of damage or air
leaks. - ANSWER Glad hands
On a long or steep downgrade, once you have reached your "safe" speed, brake until
you are traveling - ANSWER 5 mph slower
If you must make an emergency stop, brake so that - ANSWER your vehicle should
stay in a straight line
The safety valve is set to automatically reduce pressure at - ANSWER 150 PSI
In which of the following situations should you NOT apply the parking brakes? -
ANSWER If the brakes are very hot
When you pull hard on a slack adjuster, if it has more than ________ of free play, the
slack adjuster may need adjustment. - ANSWER 1 inch
How would you check your truck's slack adjusters? - ANSWER Park on ground level,
turn off the parking brakes, and pull hard on each slack adjuster. It should'nt move more
than 1 inch
You are on a steep downgrade and have reached your safe speed of 40 mph. You
would apply the service brakes until your speed drops to - ANSWER 35 mph
To apply the parking brakes under normal conditions, - ANSWER Let air out the brake
chambers.
