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Indiana CDL Combination Test 2
Practice mode
Question
1
of 19
QUESTION 1 / 19
To lower the risk of a rollover, you should:
Choose one answer below.
A
Load the cargo as far forward as possible.
✓
B
Load the cargo as far back as possible.
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C
Load the cargo as low as possible.
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D
Stack the cargo as high as possible.
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QUESTION 2 / 19
If the trailer begins to skid, it is best to:
Choose one answer below.
A
Release the brakes.
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B
Accelerate.
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C
Quickly turn the steering wheel one way, then the other.
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D
Brake.
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QUESTION 3 / 19
When entering or crossing traffic while driving a combination vehicle, it is especially important that you:
Choose one answer below.
A
Sound your horn.
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B
Make sure there is a large enough gap for your vehicle.
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C
Expect other drivers to make room for your vehicle.
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D
Let other drivers wave you into their lane.
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QUESTION 4 / 19
A shut-off valve:
Choose one answer below.
A
Is located on the front of a trailer.
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B
Is located on the instrument panel.
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C
Prevents air from escaping an air brake system.
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D
Should always be open.
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QUESTION 5 / 19
The best way to recognize that your trailer has begun to skid is by:
Choose one answer below.
A
Seeing other drivers' faces.
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B
Seeing it in your mirrors.
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C
Feeling it.
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D
Listening to the radio.
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QUESTION 6 / 19
What is another name for the service line?
Choose one answer below.
A
The signal line
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B
The cable line
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C
The surplus line
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D
The power line
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QUESTION 7 / 19
During a trip, which shut-off valves should be open?
Choose one answer below.
A
All shut-off valves should be open.
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B
The rear shut-off valves should be open.
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C
All shut-off valves should be in the open position, except the rear shut-off valves.
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D
No shut-off valves should be open.
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QUESTION 8 / 19
When connecting a converter dolly to a second or third trailer, the trailer height should be:
Choose one answer below.
A
Slightly higher than the center of the fifth wheel.
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B
Level with the center of the fifth wheel.
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C
Slightly lower than the center of the fifth wheel.
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D
Next to the center of the fifth wheel.
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QUESTION 9 / 19
Failure to keep the fifth wheel plate properly greased could:
Choose one answer below.
A
Cause the trailer to disconnect.
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B
Cause steering problems.
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C
Cause braking problems.
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D
Affect the lights.
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QUESTION 10 / 19
Trailers with low underneath clearance may be difficult to drive:
Choose one answer below.
A
On interstate highways.
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B
Over railroad crossings.
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C
On dirt roads.
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D
At the posted speed limit.
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QUESTION 11 / 19
When coupling a trailer:
Choose one answer below.
A
Make sure to couple matching glad hands.
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B
Any glad hand can be connected to any other glad hand.
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C
It is best to leave one glad hand unattached.
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D
Only one set of glad hands should be connected.
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QUESTION 12 / 19
When driving a bobtail tractor, you should be aware that:
Choose one answer below.
A
Bobtails stop very easily.
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B
Bobtails cannot drive as fast as tractors with semitrailers.
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C
Bobtails are more difficult to stop than tractors with semitrailers.
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D
Bobtails are illegal in most states.
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QUESTION 13 / 19
How many air lines does a combination vehicle have?
Choose one answer below.
A
One
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B
Two
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C
Three
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D
Four
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QUESTION 14 / 19
After connecting the air lines to the trailer while coupling, you should:
Choose one answer below.
A
Supply air to the trailer.
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B
Chock the wheels.
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C
Inspect the fifth wheel.
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D
Connect the electrical cord.
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QUESTION 15 / 19
In a double or triple combination:
Choose one answer below.
A
Cargo weight must be evenly distributed between all trailers.
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B
The heaviest trailer should be positioned directly behind the cab.
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C
The heaviest trailer should be positioned in the rear.
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D
The weight of the trailers does not matter.
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QUESTION 16 / 19
What does the tractor protection valve do?
Choose one answer below.
A
Protects the tractor from being stolen
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B
Protects the tractor from exceeding a set speed
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C
Keeps air in the braking system, should the trailer break away or develop a leak
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D
Ensures oil adequately lubricates the engine
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QUESTION 17 / 19
If a load is placed on one side of a trailer, the trailer:
Choose one answer below.
A
May lean, and could result in a rollover.
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B
May add extra support during turns.
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C
Have improved braking.
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D
Have improved steering.
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QUESTION 18 / 19
Before a drive, ensure that air flows to all trailers by:
Choose one answer below.
A
Opening the rear shut-off valves and listening for escaping air.
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B
Closing the rear shut-off valves and listening for escaping air.
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C
Disconnecting air supply lines and listening for escaping air.
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D
Rolling each trailer down a hill and testing the brakes.
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QUESTION 19 / 19
When driving a combination rig, following distance should be:
Choose one answer below.
A
Decreased in poor weather.
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B
Shorter than when driving a single vehicle.
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C
About the same as when driving a single vehicle.
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D
Longer than when driving a single vehicle.
✓
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