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Driving Test
Nebraska
Nebraska CDL Double 2
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Q.1
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What is another name for the service line?
The control line
The utility line
The open line
The parallel line
Q.2
Submit
When coupling a trailer:
Make sure to couple the proper glad hands.
Glad hands can be connected to any other glad hands.
Only one set of glad hands should be connected.
Q.3
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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.
25 psi
50 psi
75 psi
100 psi
Q.4
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When you need to stop in an emergency, you should:
Lock the wheels and skid to a stop.
Stop in a way that keeps your vehicle in a straight line.
Stop in a way that turns your vehicle.
Expect your vehicle to slow down more quickly than usual.
Q.5
Submit
A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
Does not cause problems.
Should not be a concern.
Q.6
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What is the average driver’s reaction time?
1/16 of a second
1/8 of a second
3/4 of a second
Q.7
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Backing with a trailer is dangerous because:
It is difficult for the driver to see behind the trailer.
There may be extra weight in the front of the vehicle.
Cargo may fall out of the trailer.
Trailers are not made to be driven in reverse.
Q.8
Submit
While inspecting coupling equipment before a trip, the air lines should not:
Be connected to the glad hands.
Have any slack.
Be secured.
Be leaking.
Q.9
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What is a concern immediately after it begins raining?
The water will mix with grease and oil on the road, making the roadway slippery.
A driver may forget where the windshield wiper lever is located.
It may stop raining.
People will be using their windshield wipers needlessly.
Q.10
Submit
Talking on a hands-free phone while driving:
Does not distract the driver.
Only distracts the driver if the driver is speaking.
Can be distracting to the driver.
Q.11
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If you don't pull a dolly out from beneath the rear trailer before unlocking the pintle hook:
The tow bar may fly up.
The kingpin may break.
The brakes may become unlocked.
Q.12
Submit
Front brake limiting valves were intended to:
Prevent the front tires from skidding.
Prevent the front tires from overheating.
Create equal brake usage.
Remove uncertainty when applying the brakes.
Q.13
Submit
Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
An automobile
A three-axle tractor
A bobtail tractor
A triple combination
Q.14
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To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Set the control to normal.
Set the control to the off position.
Set the control to neutral.
Keep the control at the halfway mark.
Q.15
Submit
Steering that feels heavy is often a sign of:
Rear tire failure.
Front tire failure.
A shifting load.
The coolant overheating.
Q.16
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A driver should ensure that:
The truck is overloaded.
The truck is properly loaded.
The cargo is mostly in the front of the trailer.
Q.17
Submit
Off-ramps:
Are usually safe for trucks.
Can be dangerous for trucks.
Should not be used by trucks.
Should be used only if following another vehicle.
Q.18
Submit
When backing a trailer, how should you turn the steering wheel?
Turn the top of the steering wheel in the direction you want the trailer to go.
Turn the top of the steering wheel in the direction opposite of where you want the trailer to go.
It doesn’t matter.
It depends on where the trailer is being backed.
Q.19
Submit
When backing a truck, you should:
Only use the side mirrors on the driver’s side of the vehicle.
Use both side mirrors.
Not use a helper.
Q.20
Submit
In a double or triple combination, the ____ trailer should be directly behind the cab.
Lightest
Heaviest
Smallest
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