TEXAS CDL AIR BRAKES / QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
Terms in this set (64)
Air brake systems Service brakes, parking brakes and emergency brakes.
combine what three
different systems?
When should you drainAfter every working day. the air tanks?
Why drain water from the Water can freeze in cold weather and cause brake failure.
compressed air tanks?
Air brake equipped vehicles A supply pressure gauge and warning signal when psi drops below
must have: 60.
What can legally hold a Spring pressure.
parking or emergency brake
in position for a truck, truck
tractor or bus?
What makes the total Brake lag distance.
stopping distance for air
brakes longer than that for
hydraulic brakes?
The first thing you should do Stop and safely park ASAP.
when the low air pressure
warning comes on?
Depends on the adjustment of the service brakes.
The braking power of the
spring brakes:
, The air compressor governor When air is pumped into the air tanks.
controls what?
The application pressure Is being applied to the brakes.
gauge shows the driver
how much pressure:
When you apply pressure to Pushing against a spring and against air pressure to the
the brake pedal, you are... brakes.
The air compressor is Gears or a V-belt
connected to the engine
through...
Which type of brake is the S-cam brake
most common in
commercial vehicles?
An application pressure Shows how much air pressure you are applying to the brakes.
gauge...
All vehicles with air brakes A red light, wig wag mechanical arm or a buzzer.
are required to have a low
pressure warning signal.
This could be...
To test service brakes you Release the parking brake, move forward slowly and depress
should... brakes.
Stab braking occurs when 1. Press on a brake pedal as hard as you can. 2. Release the
you... brakes when the wheels lock up. 3. Apply the brakes when
the wheels start rolling.
Air brakes take longer to stop It takes longer for the air to flow through the lines.
than hydraulic brakes
because...
Apply brakes just hard enough to reduce speed to 5 mph below
The proper way to go down
safe speed then release until back to safe speed and repeat
long grades is to...
process.
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
Terms in this set (64)
Air brake systems Service brakes, parking brakes and emergency brakes.
combine what three
different systems?
When should you drainAfter every working day. the air tanks?
Why drain water from the Water can freeze in cold weather and cause brake failure.
compressed air tanks?
Air brake equipped vehicles A supply pressure gauge and warning signal when psi drops below
must have: 60.
What can legally hold a Spring pressure.
parking or emergency brake
in position for a truck, truck
tractor or bus?
What makes the total Brake lag distance.
stopping distance for air
brakes longer than that for
hydraulic brakes?
The first thing you should do Stop and safely park ASAP.
when the low air pressure
warning comes on?
Depends on the adjustment of the service brakes.
The braking power of the
spring brakes:
, The air compressor governor When air is pumped into the air tanks.
controls what?
The application pressure Is being applied to the brakes.
gauge shows the driver
how much pressure:
When you apply pressure to Pushing against a spring and against air pressure to the
the brake pedal, you are... brakes.
The air compressor is Gears or a V-belt
connected to the engine
through...
Which type of brake is the S-cam brake
most common in
commercial vehicles?
An application pressure Shows how much air pressure you are applying to the brakes.
gauge...
All vehicles with air brakes A red light, wig wag mechanical arm or a buzzer.
are required to have a low
pressure warning signal.
This could be...
To test service brakes you Release the parking brake, move forward slowly and depress
should... brakes.
Stab braking occurs when 1. Press on a brake pedal as hard as you can. 2. Release the
you... brakes when the wheels lock up. 3. Apply the brakes when
the wheels start rolling.
Air brakes take longer to stop It takes longer for the air to flow through the lines.
than hydraulic brakes
because...
Apply brakes just hard enough to reduce speed to 5 mph below
The proper way to go down
safe speed then release until back to safe speed and repeat
long grades is to...
process.
