2026 Kentucky DMV Combination Class A Test 2 (20 Questions And Complete Answers)
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Trailers built before ____ are not required to have spring brakes
1. 1985
2. 1975
3. 1999
1. 1985
2. 1975
3. 1999
1975
If unsure if a trailer has an Anti-Lock Braking System (ABS), you can:
1. Look under the trailer for wheel speed sensors coming from the back of the brakes.
2. Remove a tire and look for the ABS sensor on the axle.
3. Assume it does have ABS.
1. Look under the trailer for wheel speed sensors coming from the back of the brakes.
2. Remove a tire and look for the ABS sensor on the axle.
3. Assume it does have ABS.
Look under the trailer for wheel speed sensors coming from the back of the brakes.
When you are pulling a trailer, the air supply control lever should be in its ____ position.
1. Emergency
2. Supply
3. Normal
1. Emergency
2. Supply
3. Normal
Normal
Fully-loaded rigs:
1. Usually are very responsive to steering.
2. Are more likely to roll over than empty rigs.
3. Can stop quickly.
1. Usually are very responsive to steering.
2. Are more likely to roll over than empty rigs.
3. Can stop quickly.
Are more likely to roll over than empty rigs.
Rearward amplification refers to:
1. The amount of noise projected to the rear of a vehicle.
2. The cause of the "crack-the-whip" effect.
3. The number of trailers that can be pulled by a tractor.
1. The amount of noise projected to the rear of a vehicle.
2. The cause of the "crack-the-whip" effect.
3. The number of trailers that can be pulled by a tractor.
The cause of the "crack-the-whip" effect.
When driving a vehicle equipped with an Anti-Lock Braking System (ABS), brakes should be applied:
1. In the same way as they would be in a vehicle without ABS.
2. As the vehicle is placed in neutral.
3. With the hand brake.
1. In the same way as they would be in a vehicle without ABS.
2. As the vehicle is placed in neutral.
3. With the hand brake.
In the same way as they would be in a vehicle without ABS.
When driving with trailers, you should:
1. Make quick, sudden changes.
2. Avoid making sudden moves.
3. Accelerate by pushing the accelerator to the floor.
1. Make quick, sudden changes.
2. Avoid making sudden moves.
3. Accelerate by pushing the accelerator to the floor.
Avoid making sudden moves.
Keeping cargo centered on a rig can:
1. Help you drive faster.
2. Prevent a rollover.
3. Make turns more dangerous.
1. Help you drive faster.
2. Prevent a rollover.
3. Make turns more dangerous.
Prevent a rollover.
If a parked trailer does not have spring brakes, you should keep the trailer from moving by:
1. Having the vehicle parked against a wall or other vehicle.
2. Using chock blocks.
3. Parking on a slight incline.
1. Having the vehicle parked against a wall or other vehicle.
2. Using chock blocks.
3. Parking on a slight incline.
Using chock blocks.
Combination vehicles are usually:
1. Easier to drive than single commercial vehicles.
2. Lighter than single commercial vehicles.
3. More difficult to drive than single commercial vehicles.
1. Easier to drive than single commercial vehicles.
2. Lighter than single commercial vehicles.
3. More difficult to drive than single commercial vehicles.
More difficult to drive than single commercial vehicles.
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