2026 Maine DMV Combination Class A Test 2 (20 Questions And Complete Answers)
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The trailer hand valve:
1. Should always be used for parking.
2. Should only be used for parking on a downgrade.
3. Should never be used for parking.
1. Should always be used for parking.
2. Should only be used for parking on a downgrade.
3. Should never be used for parking.
Should never be used for parking.
The trailer hand valve should not be used while you are driving because:
1. It will disconnect from the vehicle.
2. You will stop the vehicle too quickly.
3. It can cause a skid.
1. It will disconnect from the vehicle.
2. You will stop the vehicle too quickly.
3. It can cause a skid.
It can cause a skid.
If you cannot reverse your trailer in a straight path, you should:
1. Swerve back and forth while backing.
2. Back toward the driver's side.
3. Back toward the passenger's side.
1. Swerve back and forth while backing.
2. Back toward the driver's side.
3. Back toward the passenger's side.
Back toward the driver's side.
When backing up your tractor while coupling it to a trailer, the trailer brakes should be:
1. Deactivated.
2. Locked.
3. Unlocked.
1. Deactivated.
2. Locked.
3. Unlocked.
Locked.
After completing a pre-trip inspection, you should ensure that the:
1. Service line valve is closed.
2. Trailer hand brake is applied.
3. Emergency line valve is open.
1. Service line valve is closed.
2. Trailer hand brake is applied.
3. Emergency line valve is open.
Service line valve is closed.
What is a bobtail tractor?
1. A tractor without a trailer
2. A tractor attached to two trailers
3. A tractor with a tank
1. A tractor without a trailer
2. A tractor attached to two trailers
3. A tractor with a tank
A tractor without a trailer
When glad hands are coupled, the seals should be pressed together at a ____ angle.
1. 50-degree
2. 180-degree
3. 90-degree
1. 50-degree
2. 180-degree
3. 90-degree
90-degree
The emergency air line supplies air to the:
1. Relay valves.
2. Trailer air tanks.
3. Signal line.
1. Relay valves.
2. Trailer air tanks.
3. Signal line.
Trailer air tanks.
Place the trailer air supply control in its "emergency" position to test:
1. The trailer emergency brakes.
2. A coupling device.
3. The anti-lock brakes.
1. The trailer emergency brakes.
2. A coupling device.
3. The anti-lock brakes.
The trailer emergency brakes.
The "crack-the-whip" effect can:
1. Turn over a trailer.
2. Be more effective than braking.
3. Make a truck move faster.
1. Turn over a trailer.
2. Be more effective than braking.
3. Make a truck move faster.
Turn over a trailer.
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