2026 Kansas DMV Air Brakes Class B Test 1 (25 Questions And Complete Answers)
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Vehicles with dual air brake systems:
1. Maintain full-capacity air pressure in the braking systems even when the vehicle is not running.
2. Maintain some air pressure in the braking systems when the vehicle is not running.
3. Must be run to build enough air pressure to brakes to operate properly.
4. Do not need time to build air pressure before a trip.
1. Maintain full-capacity air pressure in the braking systems even when the vehicle is not running.
2. Maintain some air pressure in the braking systems when the vehicle is not running.
3. Must be run to build enough air pressure to brakes to operate properly.
4. Do not need time to build air pressure before a trip.
Must be run to build enough air pressure to brakes to operate properly.
While driving downhill, you should brake until you reach a speed that is ____ below your safe speed, then release the brake pedal.
1. 5 mph
2. 10 mph
3. 15 mph
4. 20 mph
1. 5 mph
2. 10 mph
3. 15 mph
4. 20 mph
5 mph
The air pressure in a dual air brake system should build from 85 to 100 psi within:
1. Two minutes.
2. 15 seconds.
3. 10 minutes.
4. 45 seconds.
1. Two minutes.
2. 15 seconds.
3. 10 minutes.
4. 45 seconds.
45 seconds.
When traveling down a steep downgrade:
1. The air brakes should be used.
2. Shift into a lower gear, then use brakes to supplement the braking effect of the engine.
3. The vehicle should be continually downshifted in the place of using the brakes.
4. The vehicle should be driven on the shoulder.
1. The air brakes should be used.
2. Shift into a lower gear, then use brakes to supplement the braking effect of the engine.
3. The vehicle should be continually downshifted in the place of using the brakes.
4. The vehicle should be driven on the shoulder.
Shift into a lower gear, then use brakes to supplement the braking effect of the engine.
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
6 psi in a minute.
How is the parking brake released?
1. By tapping on the brake pedal three times
2. By pushing in the brake control knob
3. By engaging the accelerator
4. By tapping the accelerator twice
1. By tapping on the brake pedal three times
2. By pushing in the brake control knob
3. By engaging the accelerator
4. By tapping the accelerator twice
By pushing in the brake control knob
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.
How should you test the low pressure warning signal?
1. Engage and disable the parking brake.
2. Rapidly press and release the brake pedal.
3. Open the rear shut-off valves.
4. Uncouple and recouple all glad hands.
1. Engage and disable the parking brake.
2. Rapidly press and release the brake pedal.
3. Open the rear shut-off valves.
4. Uncouple and recouple all glad hands.
Rapidly press and release the brake pedal.
A modulating control valve can control the:
1. Spring brakes.
2. Landing gear.
3. Air brakes.
4. Anti-lock braking system (ABS).
1. Spring brakes.
2. Landing gear.
3. Air brakes.
4. Anti-lock braking system (ABS).
Spring brakes.
Both systems in a dual air brake systems share:
1. Air tanks.
2. Hoses.
3. Air lines.
4. An air compressor.
1. Air tanks.
2. Hoses.
3. Air lines.
4. An air compressor.
An air compressor.
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