2026 Massachusetts DMV Air Brakes Class A Test 1 (25 Questions And Complete Answers)
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If one air system in a dual air brake system is very low on pressure:
1. None of the brakes will work at all.
2. Either the front or rear brakes will not be operating fully.
3. There will be no noticeable affect.
4. Lights on the outside of the tractor will flash.
1. None of the brakes will work at all.
2. Either the front or rear brakes will not be operating fully.
3. There will be no noticeable affect.
4. Lights on the outside of the tractor will flash.
Either the front or rear brakes will not be operating fully.
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.
Air pressure should build up in a single air system within:
1. 15 minutes.
2. 12 minutes.
3. Three minutes.
4. One minute.
1. 15 minutes.
2. 12 minutes.
3. Three minutes.
4. One minute.
Three minutes.
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.
You should not use the parking brake:
1. If your vehicle is stopped on a level surface.
2. If your vehicle is stopped on a slight incline.
3. If your vehicle's brakes are very hot.
4. If your vehicle's other braking systems seem to be working adequately.
1. If your vehicle is stopped on a level surface.
2. If your vehicle is stopped on a slight incline.
3. If your vehicle's brakes are very hot.
4. If your vehicle's other braking systems seem to be working adequately.
If your vehicle's brakes are very hot.
What must be on an air tank in an air-braked vehicle?
1. A check valve
2. A lock
3. A trap door
4. An oxidizer
1. A check valve
2. A lock
3. A trap door
4. An oxidizer
A check valve
Most heavy-duty vehicles use:
1. Mono air brake systems.
2. Dual air brake systems.
3. Triple air brake systems.
4. Quadruple air brake systems.
1. Mono air brake systems.
2. Dual air brake systems.
3. Triple air brake systems.
4. Quadruple air brake systems.
Dual air brake systems.
What color is the low air pressure warning light?
1. Green
2. Orange
3. Red
4. Purple
1. Green
2. Orange
3. Red
4. Purple
Red
An Anti-Lock Braking System (ABS):
1. Cannot be used with air brakes.
2. Should be used on dry pavement.
3. Can assist in maintaining control when braking.
4. Should only be used if all axles have ABS.
1. Cannot be used with air brakes.
2. Should be used on dry pavement.
3. Can assist in maintaining control when braking.
4. Should only be used if all axles have ABS.
Can assist in maintaining control when braking.
What do anti-lock brakes do?
1. Help a driver avoid wheel lockup
2. Lock up the front wheels
3. Prevent a vehicle from accelerating while traveling uphill
4. Prevent a vehicle from accelerating while traveling downhill
1. Help a driver avoid wheel lockup
2. Lock up the front wheels
3. Prevent a vehicle from accelerating while traveling uphill
4. Prevent a vehicle from accelerating while traveling downhill
Help a driver avoid wheel lockup
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