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

Which two special conditions indicate that you should downshift?

starting up a hill and entering a curve

starting up a hill and finishing a curve

starting down a hill and finishing a curve

starting down a hill and entering a curve

2 / 40

What should you do if you start a trailer skid?

release the brakes to get traction back

quickly step on the brakes

use your trailer hand brake

slowly apply a firm pressure to the brakes

3 / 40

You should turn off your engine when loading flammable liquid unless:

You are loading at night and need the headlights.

You are a non-smoker.

You need the engine to run the pump.

The material does not need a placard.

4 / 40

When transporting hazardous waste, you must:

Have the word "waste" before the name of the material on the bills.

All of these answers are correct.

Carry a uniform hazardous waste manifest in the truck.

Sign a uniform hazardous waste manifest.

5 / 40

You must have placards for explosives, poison gas or flammables exceeding:

10 cartons

Any amount

100 pounds

10 pounds

6 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

7 / 40

For emergency braking to avoid a crash when driving a double trailer you should:

slam down the brake pedal and keep pressure on it

none of the answers listed

do stab or controlled braking

use the trailer brakes only

8 / 40

Which of the following is the most important reason for doing a pre-trip inspection?

safety for yourself and other road users

because other drivers do it

to make sure nothing has been stolen from the vehicle

to make sure the vehicle will make your destination

9 / 40

When not towing a trailer, why should the tractor glad hands be locked?

the connected brake circuit will become a back up air tank

this should never be done

the system pressure will not build up

it keeps water and dirt out of the lines

10 / 40

Remember to____when connecting the converter dolly to the rear trailer.

check the trailer height

lock the trailer brakes

ensure that the landing gear is slighty off of the ground

all answers listed

11 / 40

Why do air brakes take longer to stop than hydraulic brakes?

none of the answers listed

longer reaction time

the lines are hotter

it takes more time for the air to flow through the lines

12 / 40

After deciding the type of evacuation that is necessary, the next step you must take is:

Notifying the dispatch office of the evacuation.

Opening the emergency exits.

Dangle the radio microphone out of the driver window for later use.

Securing the bus.

13 / 40

Operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle is known as?

road rage

tailgating

defensive driving

aggressive driving

14 / 40

Select how brakes work on long, steep downgrades:

it's the main braking mechanism with the engine braking system available for emergency situations

it does not do anything

they are a supplement to the braking effect of the engine

it is the main braking mechanism

15 / 40

What do yo need to do before supplying air to the air tanks of the second trailer?

open the shut off valves at the back of the second trailer and close the shut off valves at the back of the first trailer

close the shut off valves at the back of the first and second trailer

open the shut off valves at the back of the first and second trailer

close the shut off valves at the back of the second trailer and open the shut off valves at the back of the first trailer

16 / 40

When would a drive-wheel skid result in a jackknife when pulling doubles?

when the trailer pushes the towed vehicle sideways

when the tractor spins around

when the tractor brakes lock up

when the trailer slides to the right into the shoulder

17 / 40

What is the most important reason for doing a vehicle inspection?

federal and state laws require you to inspect your vehicle

to insure that you will achieve the best gas mileage

safety for yourself and other road users

to save you money by preventing costly repairs

18 / 40

What handling effect will baffles have?

There will be an increase in slow surge.

None of the answers listed.

There will be less of surging front to back.

There will be less side to side surging.

19 / 40

Mirrors with a convex surface or "spot" mirrors _____.

they show a larger area than flat mirrors so do not need to be checked as often

make things look farther away and smaller than they actually are

make things look closer and larger than they actually are

are illegal in most states

20 / 40

How high should you crank the landing gear?

until the crank handle is loose

for it to be 6 inches above the ground

as high up as it will go

so that you can clear railroad tracks

21 / 40

Should the air pressure in the service air tanks fall below____the driver must be alerted via warning mechanism in the truck cab.

30 psi

80 psi

60 psi

50 psi

22 / 40

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

All of these answers are correct

A leak from the engine

Problems with the water pump

A leaking line or hose

23 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

Both of these conditions must be met.

You have 1,001 pounds or more of two or more table 2 hazard classes, requiring different placards.

You have not loaded 2,205 pounds or more of any table 2 hazard class material at any one place (you must use the specific placard for this material).

The correct answer is not listed.

24 / 40

How much space should you see between the lower and upper fifth wheel when checking the coupling of a converter dolly?

none

1 to 1 1/2 inches

1/2 to 1 inch

it depends on how heavy the load is

25 / 40

When approaching railroad tracks, stop your bus:

5-10 feet before railroad tracks.

15 and 50 feet before railroad crossings.

Only if you have manual transmission, then proceed with flashers on.

On the tracks so you can see if the train is coming.

26 / 40

Select the first action to do when the low air pressure warning comes on:

shift into a higher gear

adjust the engine brake

come to a stop and safely park as soon as possible

release the supply control valve

27 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

package, trailer

invoice, shipping papers

shipping papers, package

trailer, packages

28 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

Any more than safety required.

Any more that 450 feet.

Any more than 500 feet.

In an upwind direction.

29 / 40

What is NOT one of the four skill areas that operating a commercial vehicle requires?

safely backing

accelerating

first aid certification

steering

30 / 40

How often should you check the tires if your placarded trailer has dual tires?

Check tires every 4 hours or 200 miles.

Check tires every 3 hours or 150 miles.

Check tires every hour or 75 miles.

Check tires every 2 hours or 100 miles.

31 / 40

To avoid rollover when going through a curve, the best thing to do is:

Drive at a speed higher than the posted speed limit.

Ride the brakes through the curve.

Drive at a speed below the posted speed limit.

Pump the brakes through the curve.

32 / 40

Front wheel brakes are good under what kind of conditions?

they are not ideal

icy or wet conditions

any weather conditons

ideal weather conditions

33 / 40

The front trailer supports should be____before driving away.

raised fully and the crank handle secured in its bracket

3 turns down from the top and the crank handle secured in its bracket

raised 1/2 way with the crank handle secured in its bracket

raised 1/3 of the way with the crank handle secured in its bracket

34 / 40

What will occur as a result of failing to perform all 3 components of the air brake check?

None of the answers listed.

An automatic failure of the vehicle inspection test.

A deduction of 15 points.

The driver must restart the pre-trip from the beginning.

35 / 40

The object that doesn't get checked at the side of the trailer is the:

The frame

The locking pins/tandem release arm

The landing gear

Electrical/air connections

36 / 40

What is the next step after securing the bus when you have an unruly child on board?

Remove the student from the vehilce for the safety of the other children.

Call school administrator or the police to remove the student.

Unload the student at the next stop.

Stand up and speak respectfully to the offender, if a change of setting is needed, have the student move to a seat near you.

37 / 40

Which of the following is a key steering component?

torque rod

bearing plate

gear box

leaf spring

38 / 40

Two causes of tire fires are ______.

under-inflated tires and duals that touch

under-inflated tires and poor retreads

duals that touch and road debris

hot brakes and under-inflated tires

39 / 40

Alcohol evaporators in some air brake systems help to:

decrease the chances of ice in the air brake valves in cold weather

cleans out oil from the air lines

it removes fuel from the air lines

decreases the risk of water in the air brake valves in cold weather

40 / 40

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

the vehicle is manufactured after 2005

the vehicle is manufactured after 2001

the vehicle is manufactured after 1998

the vehicle is manufactured after 1990

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