2026 Nebraska DMV Combination Class A Test 2 (25 Questions And Complete Answers)
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The best way to notice if a trailer has begun to skid is to:
1. Ask another driver.
2. Use your mirrors to determine if the trailer has left the lane.
3. Look at the skid sensor.
4. Feel the tractor move.
1. Ask another driver.
2. Use your mirrors to determine if the trailer has left the lane.
3. Look at the skid sensor.
4. Feel the tractor move.
Use your mirrors to determine if the trailer has left the lane.
What does the trailer air supply control look like?
1. It is a square blue knob.
2. It is a triangular yellow knob.
3. It is an eight-sided red knob.
4. It is a circular orange knob.
1. It is a square blue knob.
2. It is a triangular yellow knob.
3. It is an eight-sided red knob.
4. It is a circular orange knob.
It is an eight-sided red knob.
After finishing a pre-trip inspection, you should:
1. Leave the rear shut-off valves open.
2. Remove the service line valve.
3. Leave the emergency line valve open.
4. Close the emergency line valve.
1. Leave the rear shut-off valves open.
2. Remove the service line valve.
3. Leave the emergency line valve open.
4. Close the emergency line valve.
Close the emergency line valve.
When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.
1. One second
2. Two seconds
3. Three seconds
4. Four seconds
1. One second
2. Two seconds
3. Three seconds
4. Four seconds
One second
Using the trailer hand brake while experiencing a trailer jackknife will:
1. Stop the skid.
2. Straighten the trailer.
3. Increase traction.
4. Continue the skid.
1. Stop the skid.
2. Straighten the trailer.
3. Increase traction.
4. Continue the skid.
Continue the skid.
The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.''
1. Front
2. Last
3. Middle
1. Front
2. Last
3. Middle
Last
Rollovers happen when:
1. A truck driver is driving too fast.
2. The driver of a vehicle in front of a truck is moving to slowly.
3. A truck driver is driving too slowly.
4. ABS is working effectively.
1. A truck driver is driving too fast.
2. The driver of a vehicle in front of a truck is moving to slowly.
3. A truck driver is driving too slowly.
4. ABS is working effectively.
A truck driver is driving too fast.
What does the tractor protection valve do?
1. Protects the tractor from being stolen
2. Protects the tractor from exceeding a set speed
3. Keeps air in the braking system, should the trailer break away or develop a leak
4. Ensures oil adequately lubricates the engine
1. Protects the tractor from being stolen
2. Protects the tractor from exceeding a set speed
3. Keeps air in the braking system, should the trailer break away or develop a leak
4. Ensures oil adequately lubricates the engine
Keeps air in the braking system, should the trailer break away or develop a leak
Having anti-lock brakes on only one axle:
1. Will not make a difference in braking.
2. Will provide increased control in braking.
3. Will likely cause the air brakes to malfunction.
1. Will not make a difference in braking.
2. Will provide increased control in braking.
3. Will likely cause the air brakes to malfunction.
Will provide increased control in braking.
Pushing in the trailer air supply control will:
1. Supply the trailer with air.
2. Deactivate the air brakes.
3. Prevent the vehicle from skidding.
1. Supply the trailer with air.
2. Deactivate the air brakes.
3. Prevent the vehicle from skidding.
Supply the trailer with air.
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