new jersey
CDL Practice Test

Welcome to the CDL practice test site for New Jersey. Questions from these tests cover rules and regulations in the NJ CDL manual. These questions are written to prepare you for the official NJ CDL test as you look to obtain your New Jersey CDL. You are welcome to take these New Jersey CDL permit practice tests as many times as you like as all of the tests on this site are free. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50 minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

Cylinders containing compressed gases may only be loaded onto a vehicle without a flat floor or platform if the cylinders are:

In boxes that will keep them from turning over.

Loaded in an upright or horizontal position.

Loaded into racks attached to the vehicle.

All of these answers are correct.

2 / 40

The trailer should be lowered so that _____.

the tractor comes in contact with the nose of the trailer

you are able to use the landing gear to make adjustments

it is slightly raised when the tractor is backed under it

the trailer is high above the fifth wheel

3 / 40

Most states require school bus drivers to take a physical examination:

Every 3 years

Every 2 years

Twice per year

Annually

4 / 40

You are driving a 60 foot truck at 55 MPH, how much space (in seconds) should you keep in front of you?

5 seconds

6 seconds

7 seconds

8 seconds

5 / 40

When there is a hazardous materials emergency. You should:

Contact emergency authorities.

Keep people away and warn them of the danger.

Prevent smoking and keep open flames away.

All of these answers are correct.

6 / 40

What school bus accidents should be reported?

All accidents.

Only accidents determined to be the fault of the bus driver.

No accidents.

Only accidents casusing injury.

7 / 40

You should check the_____when loading small tanks equipped with bulkheads.

expansion rate

percentage of water

distribution of the weight

fuel to air ratio

8 / 40

Suspension systems:

keep the axles in place

keep the steering wheel tight

keep the brake drums from failing

keep the load secure

9 / 40

Puddles or dripping fluids from the underside of the transmission and engine may indicate:

Problems with the water pump

A leak from the engine

All of these answers are correct

A leaking line or hose

10 / 40

The shipping papers for hazardous materials can be found:

In clear view, within reach while driving.

On the driver's seat when out of the vehicle.

Any of the above locations.

In a pouch on the driver's door.

11 / 40

Off-tracking happens when going around a corner and:

the front part of the trailer pulls to the right

the rear wheels follow the front wheels in a straight path

the rear wheels follow a different pathway than that of the front wheels

the rear part of the trailer goes into the shoulder

12 / 40

The walls that separate compartments inside the tanks and having openings at the top and bottom are called:

Baffles

Bulktears

Layers

Free walls

13 / 40

How do you check the coolant level?

Remove the radiator cap once it is at operating temperature.

Inspect the reservoir sight glass or remove the radiator cap if the engine isn't hot.

While wearing rubber gloves and safety glasses.

None of the answers listed.

14 / 40

The pintle hook should be_____ and the converter dolly air tank drain valve is___when doing a walk around inspection of a triple or double trailer.

free, open

latched, closed

latched, open

free, closed

15 / 40

When transporting both hazardous and non hazardous materials, your bills must:

Identify the materials by the letter x or rq in the hm column.

Have the hazardous materials highlighted.

Any one of the above.

Describe the hazardous materials first.

16 / 40

Two causes of tire fires are ______.

hot brakes and under-inflated tires

duals that touch and road debris

under-inflated tires and duals that touch

under-inflated tires and poor retreads

17 / 40

What will happen should a driver cross the air lines when hooking up the an older trailer?

if there are no spring brakes, you can drive on but there will be no trailer brakes

the hand valve will activate the tractor brakes instead of the trailer brakes

none of the answers listed

the brake pedal will activate the trailer spring brakes instead of the air brakes

18 / 40

What is a passive railway crossing?

The type of crossing with no cross buck sign.

The type of crossing on which the driver does not have to stop.

The type of crossing, which does not have any type of traffic control device.

The type of crossing where you can pass the tracks without stopping.

19 / 40

Why should you cover cargo?

to protect individuals from any spilled cargo

all of these answers are correct

to protect your cargo from bad weather

because many states require it

20 / 40

How do you check the air flow to the last trailer?

while on an level surface, test the emergency brake lines

listen for escaping air after opening the emergency shut off valve

watch the brake lights as you step on the brake pedal

pull the vehicle forward and then step on the brakes

21 / 40

If you are hauling hazardous materials and have ___ tires on your vehicle, you must stop and check them every time you park.

treaded

radial

dual

bias

22 / 40

Select the correct setup for shut-off valves:

the rear shut-off valves are closed and the front trailer valves are open

the front and back shut-off valves are open

the front shut-off valves are closed and the rear trailer valves are open

the front and back shut-off valves are closed

23 / 40

A slack adjuster is:

a lever that connects the brake chamber push rod with the foundation brake camshaft

a lever that connects the return spring and the brake chamber push rod

a lever that connects the brake drum to the brake shoe

a lever that connects the brake camshaft with the brake chamber

24 / 40

Select the statement that best describes what the service line is for.

it is controlled by the foot brake or trailer hand brake and carries air

it is controlled by the foot brake and carries air

it is controlled by the trailer hand brake and carries air

all answers listed

25 / 40

The two other places where the hazardous identification number must appear are:

On a temporary license plate holder and the steering wheel.

On the gas tank and a sticker in the glove compartment.

On the back of the truck and inside the glove compartment.

Any bulk packaging and the cargo tanks.

26 / 40

There should be ___space between the upper and lower fifth wheel after coupling.

1/30 inch

none of the answers listed

1/8 inch

1/12 inch

27 / 40

For any flatbed load you must have at least ____ tie downs.

one

two

four

six

28 / 40

What color and shape is the trailer air supply control?

it is a square knob that is red

it is a triangle-shaped knob that is red

it is a square knob that is yellow

it is an 8-sided knob that is red

29 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

The catwalk

The locking kingpin

The fifth wheel

The platform

30 / 40

Select the true statement in regards to the center of gravity for tanks:

None of the answers listed.

The vehicle can handle higher speeds around curves than other large trucks.

The center of gravity is generally lower than with other large trucks.

The vehicle can turn over even when driving at the posted speed limit for curves.

31 / 40

Wet brakes can cause _____.

pulling to one side or the other

brakes to apply unevenly

lack of braking power

all of these answers are correct

32 / 40

How do you supply air to the trailer tanks?

by connecting the red and blue lines

by pushing in the trailer air supply valve

by pulling out the trailer air supply valve

by connecting the service line glad hand

33 / 40

Where are shut-off valves located?

either at the front or the back of the trailer

at the front and back of the trailer

at the back of the trailer

at the front of the trailer

34 / 40

When using turn signals, which of the following should be avoided?

signal when you are merging into traffic

signal before you exit

signal just before you start to make a turn

signal when you want to change lanes

35 / 40

You need to raise the landing gear just to the height of where it clears the pavement before driving.

only in ideal conditions

only in raining conditions

false

true

36 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

You are also a class a tow truck driver.

Getting off the bus would be unsafe.

Bus is on a drawbridge.

Your employer tells you to.

37 / 40

When should air tanks be drained?

they don't need to be drained

every 7 days

at every restroom break stop

at the end of each working day

38 / 40

Select the answer that is not a part of the braking process when driving a tractor-trailer combination vehicle that has ABS:

only use the braking that is necessary to safely stay in control of the vehicle

you should monitor the tractor and trailer as you decrease your speed to keep control

you should drive at a higher speed to keep the trailer in line

you should brake in the same manner regardless of what you are driving

39 / 40

If you have to swerve to avoid a hazard, it's important to:

None of these answers are correct.

Know where other vehicles are around your bus by checking your mirrors.

Make sure your passengers are wearing seat belts.

Warn passengers with a loud and clear voice.

40 / 40

What is the most important reason for doing a school bus inspection?

To give the mechanic something to do.

To check for flat tires.

To assist the school principal with their report.

For safety required by federal, state, and local laws.

Your score is

The average score is 65%

3.6/5 - (5 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A new jersey Commercial Drivers License

To be eligible for a CDL in New Jersey, applicants must be at least 18 years old to operate within state lines and must be at least 21 to drive a commercial vehicle across state lines. To be eligible to drive a commercial vehicle in New Jersey, applicants must provide verification that they are medically fit to operate a commercial vehicle. New Jersey applicants must pass a vision test and have 20/40 vision in each eye.

All applicants must submit the following documents when they apply for a CDL.

(Form MCSA-5876) Medical Examiner’s Certificate
CDL Holder Self-Certification Form

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in New Jersey. Applicants must possess a basic New Jersey Class D driver’s license.

New Jersey CDL Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Towing a Double or Triple Trailer

Hit the Open Road

new jersey CDL License Test Tips

Every New Jersey CDL applicant must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the New Jersey test, applicants must score 80 percent or higher. There are additional tests for applicants who want to drive specialized commercial vehicles. The New Jersey skills test can be taken 20 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans who were discharged within 12 months of completing the CDL application and active military members can have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must show proof of military enlistment or discharge or have operated a motor vehicle equivalent to a commercial motor vehicle in the military within 12 months of the application date. In addition, applicants must possess a valid New Jersey driver’s license and submit an application for a Military Skills Test Waiver that is signed by the commanding officer.

Additional Information

Information on the New Jersey Motor Vehicle Commission

The New Jersey Motor Vehicle Commission provides oversight for the CDL license requirements in New Jersey. To get more information contact them via:

Website: https://www.state.nj.us/mvc/drivertopics/cdl.htm

Phone: 609.292.6500

Additional New Jersey CDL Helpful Links

Please use the links below to access more valuable New Jersey CDL testing resources and to learn more about practice driving tests for the state of New Jersey.

new jersey CDL Practice Test