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Driving Test
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Driving Test
Alabama
Alabama CDL Combination 1
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Q.1
Submit
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
Quicker
Easier
More difficult
Q.2
Submit
Pull out the trailer air supply control to test:
The parking brake.
The trailer emergency brakes.
The trailer service brakes.
The landing gear.
Q.3
Submit
When glad hands are coupled, the seals should be pressed together at a ____ angle.
50-degree
180-degree
90-degree
Q.4
Submit
Before backing your tractor under the trailer, make sure your trailer brakes are:
Disengaged.
Locked.
Deactivated.
Dry.
Q.5
Submit
If a trailer begins to skid, the driver should:
Lock the brakes.
Release the brakes.
Steer in the opposite direction.
Accelerate.
Q.6
Submit
While inspecting a coupling, you should go under the trailer and:
Detach the jaws from around the kingpin.
Make sure the locking lever is in the "emergency" position.
Remove the safety latch.
Look into the back of the fifth wheel.
Q.7
Submit
A combination vehicle has:
One air line.
Two air lines.
Three air lines.
Four air lines.
Q.8
Submit
Compared to other commercial motor vehicles, combination vehicles need more space on the road because they are longer and they:
Need more space to turn and stop.
Drive more slowly.
Are twice the width.
Swerve more often.
Q.9
Submit
If a trailer begins to jackknife, the driver:
Should not apply the trailer hand brake.
Should firmly apply the brakes.
Can straighten the trailer with the parking brake.
Q.10
Submit
Failure to keep the fifth wheel plate properly greased could:
Cause the trailer to disconnect.
Cause steering problems.
Cause braking problems.
Affect the lights.
Q.11
Submit
In a sudden turn, the ____ trailer is the most likely to turn over.
Front
Last
Middle
First
Q.12
Submit
Rollovers happen when drivers:
Turn too quickly.
Do not driving fast enough.
Pay attention to the road.
Drive illegally.
Q.13
Submit
The service air line is often controlled by the foot brake and is attached to the ____ valves.
Relay
Supply
Emergency
Q.14
Submit
Proper coupling technique:
Is the same on all vehicles.
Is essential to the safe operation of a vehicle.
Includes ensuring that the fifth wheel plate is not greased.
Can be learned over time.
Q.15
Submit
The emergency air line:
Is controlled by the foot brake.
Is connected to the relay valves.
Supplies air to the trailer air tanks.
Prevents skids.
Q.16
Submit
The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.
Front
Last
Middle
Q.17
Submit
When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.
One second
Two seconds
Three seconds
Four seconds
Q.18
Submit
Using the trailer hand brake while experiencing a trailer jackknife will:
Stop the skid.
Straighten the trailer.
Increase traction.
Continue the skid.
Q.19
Submit
____ are the cause of more than half of all accident-related truck driver deaths.
Truck rollovers
Motorcycles
Slippery roads
Pedestrians
Q.20
Submit
When braking with ABS, you should:
Push the brake pedal harder than usual.
Push the brake pedal as you normally would.
Push the brake pedal more lightly than usual.
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