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

A tank vehicle:

Is a vehicle that can transport liquified gasses.

All answers listed.

Is a vehicle that can transport bulk fertilizer.

Is a vehicle that can transport liquid.

2 / 40

Which of the following is NOT a basic step to be taken at a crash scene?

notify authorities

gather the contact information of all the drivers involved

protect the area

care for the injured

3 / 40

Always try to back toward the driver's side because

it's more comfortable for turning your neck

you can see better, watching the vehicle rear out the side window

all of these answers are correct

your truck will naturally pull toward the driver's side

4 / 40

You do not have to stop at railroad crossings, but must slow down and carefully check for other vehicles:

Where a policeman or flagman is directing traffic.

All of these answers are correct.

If a traffic signal is green.

At crossings marked as "exempt" or "abandoned".

5 / 40

How often should you check the tires on a placarded trailer that has dual tires?

Start of each day and every time you stop.

Each time you stop.

Once every three hours.

Once every 100 miles.

6 / 40

The designation RQ identifies the material's:

Regulatory quantity

Regulatory quotient

Reportable quantity

Reference quotient

7 / 40

What is the best way to stop all skids?

use controlled or stab braking

accelerate and countersteer

restore traction back to the tires

quickly turn the steering wheel side to side

8 / 40

Which of the following statements about downshifting is NOT true?

downshift before entering a curve

downshift when you get to the bottom of a hill

downshift before starting down a hill

downshift before climbing a hill

9 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

percentage of alcohol

weight distribution

the fuel to air ratio

percentage of water

10 / 40

Where are shut-off valves located?

either at the front or the back of the trailer

at the front of the trailer

at the back of the trailer

at the front and back of the trailer

11 / 40

To maintain alertness during the trip, drivers should:

schedule trips during the daytime hours

get 8-9 hours of sleep

avoid medications that cause drowsiness

all of these answers are correct

12 / 40

Select the statement that best describes what the trailer air supply control does:

when pushed in it supplies the tractor with air and when pulled out it supplies the trailer with air

when pushed in it supplies the trailer with air and when you pull it out it shuts off the air supply and puts on the trailer emergency brakes

when pushed it it supplies the trailer with air and when pulled out it supplies the tractor with air

when pulled out it supplies the trailer with air and when pushed in it shuts off the air and puts on the trailer emergency brakes

13 / 40

Select the true statement in regards to handing triples and doubles

a sudden movement of the steering wheel may result in the rear trailer tipping over

due to the crack the whip effect, the rear trailer of a 100 foot triple is less likely to tip than a single trailer

due to off tracking, a triple bottom rig can come to a stop quicker than a 5 axle semi trailer

none of the answers listed

14 / 40

Hazardous materials (that are not forbidden) carried on a bus must be:

Labeled

Carried in a metal box

All of these answers are correct

Stored in the passenger compartment

15 / 40

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

the dolly tow bar may fly up

the kingpin may snap in half

the spring brakes may release

the fifth wheel may be misaligned

16 / 40

What is the purpose of a baffle?

It controls the surge of liquid forward and backwards.

It makes it easier to clean the tanker out.

It stops side to side surging.

It allows you to haul loads that are mixed.

17 / 40

How high should you crank the landing gear?

for it to be 6 inches above the ground

until the crank handle is loose

so that you can clear railroad tracks

as high up as it will go

18 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

quickly turn the steering wheel side to side

shift into a lower gear

increase engine rpm

drive at a high speed

19 / 40

You should make sure the_____before backing under a trailer.

air brakes have been shut off

tractor shut off valve is normal

trailer brakes are locked down

landing gear is fully raised

20 / 40

Select the statement that describes smooth bore tanks:

None of the answers listed.

They are divided down into smaller tanks.

They are 1 large tank.

They are divided with holes from liquid to flow through controlling surge.

21 / 40

What does the amount of liquid you can carry depend on?

The material the baffles are made from.

The center of gravity.

The outage of the liquid.

The vehicle's horsepower rating.

22 / 40

To test the security of the tractor semi trailer connection you should:

put the tractor in a high gear and quickly pull ahead

with the trailer brakes locked, rock the trailer back and forth

you don't need to check it

look at it carefully after pulling forward gently in a low gear against the locked trailer brakes

23 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

tire retread that is mismatched

when using the engine brake more than the brakes

excessive heat from extensive use

brakes that are not aligned properly

24 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

anti-lock braking

brake fade

engine braking

double clutching

25 / 40

In what position should the converter dolly air tank drain valve be in for double trailer combination?

in a 1/3 open position

in a halfway closed position

in an open position

in a closed position

26 / 40

Select the true statement:

light vehicles require more braking power than heavier vehicles

you should always ride the brakes

wait to brake heavy vehicles for as long as you can

a bobtail tractor will take longer to stop than a combination vehicle that is loaded to the max

27 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

length and steepness of grade

weather

total weight of the vehicle and cargo

time of day

28 / 40

Air pressure should build___with a dual air system.

from 50 to 80 psi in 60 seconds

from 60 to 100 psi in 45 seconds

from 70 to 125 psi in 60 seconds

from 85 to 100 psi in 45 seconds

29 / 40

Select how brakes work on long, steep downgrades:

it does not do anything

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

it is the main braking mechanism

they are a supplement to the braking effect of the engine

30 / 40

A baffled tanker has:

Balls floating in it to increase the speed of the liquid movement.

Bulkheads with holes that allow liquid to flow through it.

No side to side surge.

Separate compartments inside the trailer.

31 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

10 or more persons, including the driver.

16 or more persons, including the driver.

15 or more persons, including the driver.

20 or more persons, excluding the driver.

32 / 40

Which of these statements about signaling is correct?

Leave your signal on long after you've changed lanes.

Signal to others that it is safe to pass your bus.

Signaling is a warning, not a request.

Signal your intentions early and continuously.

33 / 40

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

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

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

34 / 40

How do you make sure the trailer height is correct before coupling?

visually check that they are level height wise

visually check that the lead trailer is higher than the fifth wheel so that the trailer will lower when the dolly is pushed under it

you do not need to do a visual check

visually check that the rear trailer is lower than the fifth wheel so that the trailer raises slightly when the dolly is pushed under it

35 / 40

Select the statement that is true in regards to what is required of a driver with a double or triple trailers:

all of the answers listed

none of the answers listed

drive with extra care in mountains and in bad weather

increase your following distance

36 / 40

You should_____when the low pressure warning is activated:

come to a safe stop while you still have control of the brakes

wait until the air brakes kick in automatically

pump the brake pedal to come to a stop immediately

maintain highway speed and keep an eye on your air pressure gauge

37 / 40

How many seats may be placed in the aisle if the bus is a charter and is carrying agricultural (farm) workers?

38 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

Coolant system

Power steering

Voltmeter

Oil pressure

39 / 40

If you do become sleepy while driving, you should _____.

drink caffeinated beverages

turn up the radio

stop to sleep

roll down the windows

40 / 40

A "transport index" relates to products that are:

Liquid

Radioactive

Overweight

Meant for human consumption

Your score is

The average score is 65%

3.6/5 - (5 votes)

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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