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 commercial motor vehicle (CMV) is defined as:

a vehicle transporting hazardous materials

a vehicle transporting 16 or more passengers

all of these answers are correct

a vehicle with a gross weight over 26,001 lbs

2 / 40

Which of the following should you do when driving the school bus in high wind?

Keep a strong grip on the steering wheel and try to anticipate gust.

Speed up to get away from the wind as quickly as possible.

Drive only head-in to the wind to avoid cross-wind buffeting.

Pull off the road to wait for the winds to die down.

3 / 40

To maintain alertness during the trip, drivers should:

get 8-9 hours of sleep

avoid medications that cause drowsiness

schedule trips during the daytime hours

all of these answers are correct

4 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

Relay knife

Top off valves

Glad hands

Service lines

5 / 40

Which of the following is something the driver must watch for:

Appropriate clearance around and over the bus.

Gaps your bus needs to accelerate and merge with traffic.

All of these answers are correct.

Poles and tree limbs at stops.

6 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

7 / 40

You should line up_____when getting ready to back under the trailer.

for the kingpin to activate on the driver's side first

above 12 degrees to the right of the trailer

directly in front of the trailer

about 12 degrees to the left of the trailer

8 / 40

Alcohol evaporators in some air brake systems help to:

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

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

it removes fuel from the air lines

cleans out oil from the air lines

9 / 40

Select the true statement about baffled tankers:

It has walls with holes inside for liquid to flow through.

None of the answers listed.

It has hollow balls in it to slow the motion of the liquid in the trailer.

It has separate tanks.

10 / 40

It has just reached freezing. Which of the following areas is slippery?

wet-looking road

a shaded area

a bridge

all of these answers are correct

11 / 40

What might happen if you swing wide to the left before you turn right?

you might damage your leaf springs

all of these answers are correct

someone might try to pass you on your left

someone might try to pass you on your right

12 / 40

This object should not move more than an inch by pulled by hand with the brakes released for manual slack adjusters.

The brake chambers

The brake pushrod

The bounce absorbers

The air lines

13 / 40

Cargo tanks are:

Bulk packaging permanently attached to your vehicle.

Only made in one size.

Filled while they are off your vehicle, then attached for transportation.

Bulk packaging temporarily attached to your vehicle.

14 / 40

You must keep shipping papers describing hazardous materials ______.

in a pouch on the driver’s door or in clear view within immediate reach while the seat belt is fastened while driving on the driver’s seat when out of the vehicle

in a pouch on the drivers door or in the overhead compartment above the driver’s seat only

with the bills of lading

within 100 feet of the hazardous materials at all times

15 / 40

What is the purpose of a driver placarding his or her vehicle?

Forcing other drivers to stay 20 feet away in every direction.

Communicating risk.

Warning those with children to drive in another lane.

Giving people something interesting to look at while driving.

16 / 40

Tires should should be replaced:

when there are broken valve stems

when the tread separates

all of these answers are correct

if the tread depth on your front tires is less than 4/32 deep

17 / 40

Remember to_____to prevent rollovers.

drive slowly around turns

have the load centered

have the load as low to the ground as possible

all answers listed

18 / 40

The best way to test if the spring brakes come on automatically is to:

all of these answers are correct

apply pressure on and off the brake pedal until the parkng brake valve pops out on tractor-trailer vehicles

apply pressure on and off the brake pedal until the manufacturer's low psi specification has been met for the spring brakes to deploy

apply pressure on and off the brake pedal until the parking valve pops out on single vehicles

19 / 40

Which of the following statements about downshifting is NOT true?

downshift before starting down a hill

downshift before entering a curve

downshift when you get to the bottom of a hill

downshift before climbing a hill

20 / 40

When approaching railroad tracks, stop your bus:

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.

5-10 feet before railroad tracks.

21 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

you should leave the landing gear at the half way mark to make the uncoupling process easier later

you should use a high gear to make the process faster

you should grease the landing gear the increase the speed of the process

you should use a low gear until the tractor is supporting the trailer

22 / 40

What is the purpose of the supply pressure gauge?

all of these answers are correct

to inform you about how hot the air in the tank is

to inform you of how much air is in the tank

to inform you if there is too little air in the tank

23 / 40

It is important for driving safety to always be looking ahead. Which of the following is NOT a recommended time/distance that you should be looking ahead?

about 1 block for city driving

about 12-15 seconds

about 5 car lengths on the highway

about 1/4 mile for open highway driving

24 / 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 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

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

25 / 40

Select the best description of a baffle tank:

They are divided and have holes for liquid to flow through controlling surge.

It is one large tank.

They are tanks divided down into multiple smaller tanks.

None of the answers listed.

26 / 40

How can you determine if your vehicle is equipped with ABS?

look for wheel speed sensor wires that are coming from the rear of your brakes

check for yellow abs malfunction lamps on the instrument panel

all of these answers are correct

check if your vehicle was manufactured after March 1, 1998 (they are required to have the panel light)

27 / 40

Select the portion of the combination vehicle that is most likely to turn over suddenly when pulling a double trailer:

all are equally likely

the front trailer

the back trailer

the tractor

28 / 40

With the controlled braking method, you _____?

repeatedly tap the brakes as fast as you can

lightly apply braking pressure

apply the brakes as hard as you can without locking the wheels

apply the brakes all the way until the wheels lock up, release the brakes and apply them again when the wheels start to roll again

29 / 40

In what location must you keep your shipping papers which describe any hazardous materials?

In a fire-safe pouch under the passenger seat while you are driving.

In a fire-safe pouch under the driver's seat that you can reach while you are driving.

On the driver's seat anytime you are outside of the vehicle.

In a locked glove compartment anytime you are outside of the vehicle.

30 / 40

Check that the parking brake will hold by____when the parking brake is engaged and the trailer brakes released if not a combination vehicle.

shift up into a high gear and let off the clutch quickly

all answers listed

while in neutral increase the rpm to 1500

shifting down to a low gear and trying to pull forward gently

31 / 40

The container for the mechanism that transforms the steering column action into wheel action is:

Air brake system

Locking pin

Steering hoses/box

Steering linkage

32 / 40

When backing, what is the best method to use to avoid blind spots?

use a helper

use mirrors on both sides

back towards the driver's side, where you can see better

look at your path

33 / 40

Water is drained from the compressed air tanks because:

braking power is decreased due to the low boiling point of water

to keep the oil in the air compressor clean

the water could freeze in cold weather and cause braking failure

the water will over cool the compressor

34 / 40

Select the true statement in regards to stopping distance and speed:

All answers listed.

You require 4 times as much stopping distance when driving at 40 mph compared to 20 mph.

A wet road will double the stopping distance at any speed.

Larger / heavier vehicles generally take longer to stop.

35 / 40

What does outage mean?

It is the weight of the liquid.

It is the allowance needed for the expansion of liquid.

It is the movement of the liquid.

It is how quickly the tanks drain.

36 / 40

Under which two special conditions should you downshift?

before entering a curve and before going up a hill

before starting down a hill and before entering a curve

before starting down a hill and before going up a hill

if there is an accident and in sudden heavy rain

37 / 40

In column 1, the "D" symbol means:

Devices

Domestic restrictions

Domestic transportation

Detonators

38 / 40

Select the part that is not a part of the drum brake:

brake drum

slack adjuster

safety valve

axle

39 / 40

Which of the following parts do not get checked in the Bus Interior inspection:

Each hand-hold and railing.

Emergency exit handles.

Seat coverings.

Signaling devices, including the restroom emergency buzzer, if the bus has a restroom.

40 / 40

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

The power steering belt

The seat/safety belt

The water pump belt

The air compressor belt

Your score is

The average score is 0%

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

CDL Category Practice Tests

CDL Practice Test

How To Get A new jersey Commercial Drivers License

Hit the Open Road

new jersey CDL License Test Tips

Additional Information

Information on the New Jersey Motor Vehicle Commission

Additional New Jersey CDL Helpful Links

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CDL Practice Test