2026 Indiana DMV Air Brakes Class A Test 1 (25 Questions And Complete Answers)
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If the spring brakes are activated, you should never:
1. Push down the brake pedal.
2. Open the hood.
3. Release air from the air storage tanks.
4. Open the door to the cab.
1. Push down the brake pedal.
2. Open the hood.
3. Release air from the air storage tanks.
4. Open the door to the cab.
Push down the brake pedal.
If the spring brakes are on, you should:
1. Not use the brake pedal.
2. Press the accelerator.
3. Move the steering wheel.
4. Be especially careful because the brakes may fail.
1. Not use the brake pedal.
2. Press the accelerator.
3. Move the steering wheel.
4. Be especially careful because the brakes may fail.
Not use the brake pedal.
When only the tractor is equipped with an Anti-Lock Braking System (ABS):
1. There is a decreased risk of jackknifing.
2. There is an increased risk of jackknifing.
3. The brakes will not work as effectively as they would without ABS.
4. The brakes will become more sensitive.
1. There is a decreased risk of jackknifing.
2. There is an increased risk of jackknifing.
3. The brakes will not work as effectively as they would without ABS.
4. The brakes will become more sensitive.
There is a decreased risk of jackknifing.
In a dual air brake system, a leak in one system:
1. Always means there are leaks in both systems.
2. May not affect the other system.
3. Is not something to worry about.
4. Will also affect the other system.
1. Always means there are leaks in both systems.
2. May not affect the other system.
3. Is not something to worry about.
4. Will also affect the other system.
May not affect the other system.
How is the parking brake released?
1. By tapping the brake pedal three times
2. By pushing in the brake control knob
3. By starting the vehicle
4. By tapping the accelerator twice
1. By tapping the brake pedal three times
2. By pushing in the brake control knob
3. By starting the vehicle
4. By tapping the accelerator twice
By pushing in the brake control knob
In a dual air brake system:
1. Each system has separate air tanks, hoses, and lines.
2. The systems share air tanks, but each has its own separate hoses and lines.
3. Each system uses the same lines and hoses.
4. One system is the main braking system and a second system is ready to be used if the first one fails.
1. Each system has separate air tanks, hoses, and lines.
2. The systems share air tanks, but each has its own separate hoses and lines.
3. Each system uses the same lines and hoses.
4. One system is the main braking system and a second system is ready to be used if the first one fails.
Each system has separate air tanks, hoses, and lines.
If the air pressure warning light comes on, you should:
1. Continue driving normally.
2. Activate your hazard lights and continue driving.
3. Call the local law enforcement agency.
4. Safely exit the roadway and stop.
1. Continue driving normally.
2. Activate your hazard lights and continue driving.
3. Call the local law enforcement agency.
4. Safely exit the roadway and stop.
Safely exit the roadway and stop.
How many air storage tanks are used in an air brake system?
1. Two tanks
2. Four tanks
3. Six tanks
4. The number varies.
1. Two tanks
2. Four tanks
3. Six tanks
4. The number varies.
The number varies.
Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.
1. 25 psi
2. 50 psi
3. 75 psi
4. 100 psi
1. 25 psi
2. 50 psi
3. 75 psi
4. 100 psi
100 psi
In cold weather, an alcohol evaporator should be checked and filled:
1. Once a week.
2. Every day.
3. Every hour.
4. Once a month.
1. Once a week.
2. Every day.
3. Every hour.
4. Once a month.
Every day.
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