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New Jersey CDL Double Test 1
Practice mode
Question
1
of 20
QUESTION 1 / 20
When merging into traffic while driving a double or triple, a driver should:
Choose one answer below.
A
Assume there is enough space for the vehicle to merge.
✓
B
Be sure there is extra space for the vehicle to merge.
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C
Stop suddenly.
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D
Wait to merge until there is no traffic in the lane for at least two miles.
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QUESTION 2 / 20
Areas of the road that are shaded:
Choose one answer below.
A
Usually do not freeze.
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B
Usually do not contain moisture, so they can’t freeze.
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C
Will remain slick after ice on other areas of the road has melted.
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D
Should always be avoided.
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QUESTION 3 / 20
When driving on packed snow, you should reduce your speed:
Choose one answer below.
A
By at least one-half.
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B
By about one-third.
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C
By about one-quarter.
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D
By about one-eighth.
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QUESTION 4 / 20
If required to complete a vehicle inspection report in writing, the report must be signed:
Choose one answer below.
A
Every day.
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B
Only if defects have been noted and certified to have been repaired.
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C
Only if the repairs are estimated to cost more than $1,000.
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D
Only if requested to do so by a law enforcement officer.
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QUESTION 5 / 20
About how many drinks does it take for a 200-pound person to reach a 0.02 percent blood alcohol concentration (BAC)?
Choose one answer below.
A
One
✓
B
Two
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C
Three
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D
Four
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QUESTION 6 / 20
Which of the following is not a part of an air brake system?
Choose one answer below.
A
A service brake system
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B
A parking brake system
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C
An emergency brake system
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D
An axle brake system
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QUESTION 7 / 20
What happens if the air pressure in a system's air tanks falls below 60 psi?
Choose one answer below.
A
A warning light will come on.
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B
The vehicle will not shift out of gear.
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C
The front lights will flash.
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D
The vehicle should stop.
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QUESTION 8 / 20
When the brake pedal is depressed, air brakes work:
Choose one answer below.
A
Immediately.
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B
After a short delay.
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C
After about a minute.
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D
Only if the green lever on the control panel is pushed down.
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QUESTION 9 / 20
What is the minimum permitted size of a placard?
Choose one answer below.
A
Four square inches
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B
Seven square inches
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C
10 ¾ square inches
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D
32 square inches
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QUESTION 10 / 20
What is sleep debt?
Choose one answer below.
A
When you fall behind on sleep
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B
When you want to take a nap
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C
Excess sleep
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D
The amount of time it takes to get ready to drive after sleeping
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QUESTION 11 / 20
While inspecting a coupling, you should go under the trailer and:
Choose one answer below.
A
Detach the jaws from around the kingpin.
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B
Make sure the locking lever is in the "emergency" position.
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C
Remove the safety latch.
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D
Look into the back of the fifth wheel.
✓
QUESTION 12 / 20
When parked on the side of a road, you should:
Choose one answer below.
A
Activate your emergency flashers.
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B
Turn off all lights.
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C
Open the driver’s side door.
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D
Stand in the roadway and wave your arms.
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QUESTION 13 / 20
A converter dolly that has ABS can be identified:
Choose one answer below.
A
By a blue sticker.
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B
By an orange sticker.
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C
By a yellow lamp on the left side of the dolly.
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D
By a blue lamp on the left side of the trailer.
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QUESTION 14 / 20
Improper coupling is:
Choose one answer below.
A
Impossible.
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B
Not a problem.
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C
Not easily detected.
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D
Very dangerous.
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QUESTION 15 / 20
What causes the "crack-the-whip" effect?
Choose one answer below.
A
Rearward amplification
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B
Bad tires
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C
Empty trailers
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D
Good driving
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QUESTION 16 / 20
Retreaded tires:
Choose one answer below.
A
May be used on any part of a bus.
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B
May be used on the front of a bus.
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C
May be used on the rear of a bus.
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D
May never be used on a bus.
✓
QUESTION 17 / 20
When starting the engine of a truck with a trailer, how can you tell if the Anti-Lock Braking System (ABS) is not working?
Choose one answer below.
A
The yellow light on the rear of the trailer will stay on.
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B
The red light on the trailer will flash three times and then stay on.
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C
All the rear lights on the trailer will flash and then shut off.
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D
The blue light near the driver's door will light.
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QUESTION 18 / 20
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 19 / 20
An example of mandatory emergency equipment is:
Choose one answer below.
A
A supply of spare electrical fuses.
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B
A loud horn.
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C
A battery-operated flashlight.
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D
A supply of fireworks.
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QUESTION 20 / 20
What is a wig wag?
Choose one answer below.
A
A type of warning system
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B
A tube used to move air from the compressor to the tanks
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C
A noise made by air brakes when used
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D
A part within the braking unit that allows air to move freely
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