2026 Free Colorado DMV Class B Air Brakes Test 1 (25 Questions And Complete Answers)
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Terms in this set
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While driving, spring brakes are generally held in place by:'
1. Air pressure.
2. Chocks.
3. Foundation brakes.
4. Sturdy ties.
1. Air pressure.
2. Chocks.
3. Foundation brakes.
4. Sturdy ties.
Air pressure.
If using air tanks with manually operated drains, how often should you drain the tanks?'
1. Every day
2. Once a week
3. Once a month
4. Once every 3,000 miles
1. Every day
2. Once a week
3. Once a month
4. Once every 3,000 miles
Every day
Air tank drains:'
1. Allow rain water to enter the tank.
2. Are used to drain water and compressor oil from the air tank.
3. Should never be opened.
4. Must remain open during transit.
1. Allow rain water to enter the tank.
2. Are used to drain water and compressor oil from the air tank.
3. Should never be opened.
4. Must remain open during transit.
Are used to drain water and compressor oil from the air tank.
What color are ABS malfunction lamps?
1. Orange
2. Yellow
3. Green
4. Blue
1. Orange
2. Yellow
3. Green
4. Blue
Yellow
Emergency brakes:
1. Are not required on trucks.
2. Are only required on trailers.
3. Are required on tractors.
4. Are optional.
1. Are not required on trucks.
2. Are only required on trailers.
3. Are required on tractors.
4. Are optional.
Are required on tractors.
A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.
1. Green
2. Yellow
3. Orange
4. White
1. Green
2. Yellow
3. Orange
4. White
Yellow
During a static leakage test, the maximum leakage rate for a triple combination vehicle with air brakes is ____ in a minute.
1. 3 psi
2. 5 psi
3. 7 psi
4. 9 psi
1. 3 psi
2. 5 psi
3. 7 psi
4. 9 psi
5 psi
When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.
1. At least three inches
2. More than two inches
3. Up to five inches
4. No more than one inch
1. At least three inches
2. More than two inches
3. Up to five inches
4. No more than one inch
No more than one inch
Applying the brake pedal causes air pressure to activate an electric switch and:
1. Turn off the brake lights.
2. Turn on the low pressure warning light.
3. Turn on the brake lights.
4. Turn off the low pressure warning light.
1. Turn off the brake lights.
2. Turn on the low pressure warning light.
3. Turn on the brake lights.
4. Turn off the low pressure warning light.
Turn on the brake lights.
Braking mechanisms are located ____ a brake drum.
1. Outside
2. Inside
3. Next to
4. On top of
1. Outside
2. Inside
3. Next to
4. On top of
Inside
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