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TEXAS CDL AIR BRAKES EXAM, PRACTICE EXAM AND
STUDY GUIDE 2025| BRAND NEW ACTUAL EXAM WITH
100% VERIFIED QUESTIONS AND CORRECT
DETAILED ANSWERS
Air brake systems combine what three different systems? - ANSWER-Service
brakes, parking brakes and emergency brakes.
When you apply pressure to the brake pedal, you are... - ANSWER-Pushing against
a spring and against air pressure to the brakes.
The air compressor is connected to the engine through... - ANSWER-Gears or a V-
belt
Which type of brake is the most common in commercial vehicles? - ANSWER-S-
cam brake
An application pressure gauge... - ANSWER-Shows how much air pressure you are
applying to the brakes.
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All vehicles with air brakes are required to have a low pressure warning signal.
This could be... - ANSWER-A red light, wig wag mechanical arm or a buzzer.
To test service brakes you should... - ANSWER-Release the parking brake, move
forward slowly and depress brakes.
Stab braking occurs when you... - ANSWER-1. Press on a brake pedal as hard as
you can. 2. Release the brakes when the wheels lock up. 3. Apply the brakes when
the wheels start rolling.
Air brakes take longer to stop than hydraulic brakes because... - ANSWER-It takes
longer for the air to flow through the lines.
The proper way to go down long grades is to... - ANSWER-Apply brakes just hard
enough to reduce speed to 5 mph below safe speed then release until back to
safe speed and repeat process.
TEXAS CDL AIR BRAKES EXAM, PRACTICE EXAM AND
STUDY GUIDE 2025| BRAND NEW ACTUAL EXAM WITH
100% VERIFIED QUESTIONS AND CORRECT
DETAILED ANSWERS
Air brake systems combine what three different systems? - ANSWER-Service
brakes, parking brakes and emergency brakes.
When you apply pressure to the brake pedal, you are... - ANSWER-Pushing against
a spring and against air pressure to the brakes.
The air compressor is connected to the engine through... - ANSWER-Gears or a V-
belt
Which type of brake is the most common in commercial vehicles? - ANSWER-S-
cam brake
An application pressure gauge... - ANSWER-Shows how much air pressure you are
applying to the brakes.
, Page |2
All vehicles with air brakes are required to have a low pressure warning signal.
This could be... - ANSWER-A red light, wig wag mechanical arm or a buzzer.
To test service brakes you should... - ANSWER-Release the parking brake, move
forward slowly and depress brakes.
Stab braking occurs when you... - ANSWER-1. Press on a brake pedal as hard as
you can. 2. Release the brakes when the wheels lock up. 3. Apply the brakes when
the wheels start rolling.
Air brakes take longer to stop than hydraulic brakes because... - ANSWER-It takes
longer for the air to flow through the lines.
The proper way to go down long grades is to... - ANSWER-Apply brakes just hard
enough to reduce speed to 5 mph below safe speed then release until back to
safe speed and repeat process.
