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New York CDL Combination Test 2
Practice mode
Question
1
of 20
QUESTION 1 / 20
A trailer will be most likely to swing around when:
Choose one answer below.
A
It is full.
✓
B
Traveling in a straight line.
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C
It is empty.
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D
The wheels are rotating.
✓
QUESTION 2 / 20
If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can:
Choose one answer below.
A
Check for wheel speed sensors coming from the back of the brakes.
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B
Look for a red light on the front right corner of the converter dolly.
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C
Pump the air brakes to activate the ABS.
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D
Assume the vehicle has ABS.
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QUESTION 3 / 20
If your trailer goes off course while you are backing, you should:
Choose one answer below.
A
Continue the backing process without changing anything.
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B
Pull the truck forward, readjust, and start backing again.
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C
Get out of the truck and move the trailer into the right position.
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D
Turn the steering wheel all the way to the left until the trailer straightens out.
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QUESTION 4 / 20
What is a tractor protection valve?
Choose one answer below.
A
A valve to keep air in the brake system should there be a bad leak
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B
A valve that prevents the truck from being stolen
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C
A valve that prevents the driver from going too fast
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D
A valve that prevents the trailer from accidentally being released
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QUESTION 5 / 20
In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:
Choose one answer below.
A
Air pressure drops to a level between 20 and 45 psi.
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B
You are experiencing a trailer jackknife.
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C
Wheels have regained traction after a skid.
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D
Air pressure is above 45 psi.
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QUESTION 6 / 20
Pull out the trailer air supply control to test:
Choose one answer below.
A
The parking brake.
✓
B
The trailer emergency brakes.
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C
The trailer service brakes.
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D
The landing gear.
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QUESTION 7 / 20
Air pressure in the ____ air line is controlled by either the foot brake or trailer hand brake.
Choose one answer below.
A
Emergency
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B
Service
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C
Rear
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D
Auxiliary
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QUESTION 8 / 20
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 9 / 20
In a double or triple combination:
Choose one answer below.
A
Cargo weight must be evenly distributed between all trailers.
✓
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.
✓
D
The weight of the trailers does not matter.
✓
QUESTION 10 / 20
An air supply control lever should be in its "normal" position when you are:
Choose one answer below.
A
Changing a tire.
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B
Applying the trailer emergency brakes.
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C
Pulling a trailer.
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D
Using your spring brakes.
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QUESTION 11 / 20
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.
✓
QUESTION 12 / 20
The service air line is attached to the:
Choose one answer below.
A
Relay valves.
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B
Supply line.
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C
Emergency air line.
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D
Steering wheel.
✓
QUESTION 13 / 20
Test the tractor protection valve by:
Choose one answer below.
A
Removing the air supply knob.
✓
B
Removing the parking brake control knob.
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C
Releasing air with the brake pedal.
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D
Releasing air with the gas pedal.
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QUESTION 14 / 20
Push in the trailer air supply control to:
Choose one answer below.
A
Activate the emergency brakes.
✓
B
Deactivate the air brakes.
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C
Sound the horn.
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D
Supply the trailer with air.
✓
QUESTION 15 / 20
Simply changing lanes can cause:
Choose one answer below.
A
A “crack-the-whip” effect, resulting in a rollover.
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B
A trailer to straighten out.
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C
Confusion over which lane the driver is hoping to use.
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D
Other drivers to reduce their speed.
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QUESTION 16 / 20
____ are the cause of more than half of all accident-related truck driver deaths.
Choose one answer below.
A
Truck rollovers
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B
Motorcycles
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C
Slippery roads
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D
Pedestrians
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QUESTION 17 / 20
Avoid needing to make sudden lane changes by:
Choose one answer below.
A
Using your horn to encourage other drivers to move out of your lane.
✓
B
Only driving slower than the posted speed limit.
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C
Watching the road ahead while driving.
✓
D
Pulling off the road and waiting when there is high traffic.
✓
QUESTION 18 / 20
After coupling, there should be ____ between the upper and lower fifth wheel.
Choose one answer below.
A
No space
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B
Very little space
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C
A lot of space
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D
Three inches of space
✓
QUESTION 19 / 20
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 20 / 20
After finishing a pre-trip inspection, you should:
Choose one answer below.
A
Leave the rear shut-off valves open.
✓
B
Remove the service line valve.
✓
C
Close the emergency line valve.
✓
D
Leave the emergency line valve open.
✓
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