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New Jersey Doubles and Triples Practice Test
Practice mode
Question
1
of 10
QUESTION 1 / 10
Which sequence correctly recovers from trailer sway?
Choose one answer below.
A
Accelerate to regain control
✓
B
Ease off the throttle, steer gently to center, and gradually slow in a controlled manner
✓
C
Brake hard and steer away
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D
Stop suddenly and hold wheel
✓
QUESTION 2 / 10
What are signs of improper brake shoe wear on trailers?
Choose one answer below.
A
Even wear pattern and quiet operation.
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B
Uneven wear pattern, reduced braking efficiency, and grinding or squealing noises.
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C
Brakes feel too strong.
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D
Tires wearing unevenly.
✓
QUESTION 3 / 10
In double/triple trailer operation, brakes are normally controlled by which device?
Choose one answer below.
A
Hand brake lever
✓
B
Foot pedal
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C
Cruise control
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D
Automatic braking system
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QUESTION 4 / 10
If you want to couple a second trailer to your combination vehicle, secure it by using?
Choose one answer below.
A
The safety chains
✓
B
The kingpin
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C
Either answer can be correct
✓
D
The hitch ball
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QUESTION 5 / 10
How do you test a trailer's brakes while stationary?
Choose one answer below.
A
Build system pressure, apply the service brakes, and ensure the brakes engage fully without dragging.
✓
B
Run the engine and listen for screeching brakes.
✓
C
Only check the brake lights.
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D
Move the trailer forward at low speed and brake lightly.
✓
QUESTION 6 / 10
Which statement is true about coupling the dolly to the trailer during doubles/triples?
Choose one answer below.
A
All air lines must be swapped
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B
The pintle-eye alignment must be correct
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C
The safety chains are optional
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D
The trailer brakes must be disconnected
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QUESTION 7 / 10
The first step in uncoupling a converter dolly is:
Choose one answer below.
A
To lower its landing gear.
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B
To raise its landing gear.
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C
To disconnect the air lines.
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D
To lock the brakes.
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QUESTION 8 / 10
If the truck is too long to turn without swinging wide when turning right from one two-lane street into another, you should turn how?
Choose one answer below.
A
Turn wide to the right as soon as possible
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B
Turn a little over the middle
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C
Turn just before the middle
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D
Turn close to the curb
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QUESTION 9 / 10
What practice best improves seeing ahead while driving?
Choose one answer below.
A
Regularly scanning near and far ahead
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B
Staring at the bumper to maintain lane position
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C
Focusing only on side mirrors
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D
Ignoring traffic signals until the last moment
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QUESTION 10 / 10
What is the low air warning and approximately when does it occur?
Choose one answer below.
A
A temperature warning for brake drums.
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B
An audible/visual warning that air pressure is dropping, typically around 55-60 psi.
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C
A warning about engine oil pressure.
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D
A warning about tire pressure.
✓
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