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

What is the best way to stop all skids?

quickly turn the steering wheel side to side

accelerate and countersteer

restore traction back to the tires

use controlled or stab braking

2 / 40

Which of these statements about speed management and braking is true?

You need about four times as much stopping distance at 40 mph as at 20 mph.

Stopping time increases by one second for each 10 mph over 20 mph.

The posted speed limit will always allow you to stop safely.

The total stopping distance of a bus is the distance it takes to stop once the brakes are applied.

3 / 40

You are required to have a tank endorsement when transporting:

Passengers

Gas or liquid

Bulk fertilizer

Materials that are hazardous

4 / 40

Suspension systems:

keep the steering wheel tight

keep the axles in place

keep the load secure

keep the brake drums from failing

5 / 40

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

Any one of the above.

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

Describe the hazardous materials first.

Have the hazardous materials highlighted.

6 / 40

What is most likely to occur when driving double and a set of trailer wheels goes into a skid?

none of the answers listed

the tractor will continue moving in a straight line no matter how you turn the steering wheel

the rig will continue straight ahead but will slide sideways

the trailer will jackknife

7 / 40

Which of the following is NOT a part of the steering system?

main spring

tie rod

hydraulic fluid reservoir

steering knuckle

8 / 40

Select the statement that describes how you could damage the landing gear.

back under the trailer at an angle

back under the trailer in a straight path

have the tractor and trailer aligned

have the trailer kingpin centered over the fifth wheel

9 / 40

Select the true statement about dual air brake systems.

there is a single set of brake controls

all of these answers are correct

one system controls the front axle and the other controls the rear axle

there is a primary system and a secondary system

10 / 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)

brakes that are not aligned properly

tire retread that is mismatched

when using the engine brake more than the brakes

excessive heat from extensive use

11 / 40

The floor liner for explosives may not:

Contain any of these materials.

Contain steel or iron.

Contain cracks or holes.

Contain nails or screws.

12 / 40

Which of the following statements is true about speed management?

You should be able to stop within the distance that you can see ahead.

Speed limits for buses are the same as cars.

All of these answers are correct.

The posted speed limit is safe for all conditions.

13 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

only when the vehicle has over 25,000 miles on it

true

false

only when the vehicle has over 60,000 miles on it

14 / 40

Select whether the following statement is true or false: Front wheel brakes are good to use in all conditions.

false

only in ideal conditions

only in bad weather

true

15 / 40

Before pulling away, make sure the landing gear of the trailer is:

Down and that the handle is secured.

Down and that the handle is hanging free.

Raised and that the handle is secured.

Raised and that the handle is hanging free.

16 / 40

____is the most common type of foundation brakes used by heavy vehicles.

S-Cam drum

Rectangle brakes

Wedge drum

None of the answers listed

17 / 40

A placarded vehicle must have at least ___ placards?

two

four

three

six

18 / 40

To inspect the______you should pump the pedal 3 times and hold it down for 5 seconds while making sure the pedal doesn't move during those 5 seconds.

air brakes

parking brakes

hydraulic brakes

engine brakes

19 / 40

Which of the following statements about stopping distances is NOT true?

brakes, tires, springs and shocks are designed to work best when the truck is empty

trucks traveling on ice or snow require greater stopping distances

trucks traveling at higher speeds require greater stopping distances

empty trucks require greater stopping distances because they have less traction

20 / 40

A tractor should not be backed under a trailer until the whole air system is:

at a level of 70 and 90 psi

at a normal pressure

at a level of 50 and 70 psi

at half of its normal pressure

21 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 75 feet.

At least 50 feet.

At least 25 feet.

At least 100 feet.

22 / 40

You should check the_____when loading small tanks equipped with bulkheads.

distribution of the weight

fuel to air ratio

expansion rate

percentage of water

23 / 40

What are the 3 methods for securing a second trailer before coupling?

parking against another trailer, locking the trailer door, and chocking the tires

all answers listed

parking on level ground, chocking the tires, and charging the trailer air tank if it doesn't have spring brakes

chocking the tires, parking on level ground, and charging the air tank

24 / 40

Which of the following is the proper definition of a cargo tank?

A bulk container which can be securely affixed to a vehicle.

None of these answers are correct.

A bulk container permanently attached to a vehicle.

A bulk container not permanently attached to a vehicle.

25 / 40

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

slack adjusters

air lines

brake drums

brake disc

26 / 40

Should your air compressor stop working:

there will still be air pressure left in the air tanks

the brakes will lock up on you immediately

you will lose your ability to brake immediately

there will be no affect to your brakes

27 / 40

If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?

At least twenty feet

At least ten feet

At least five feet

At least half a mile

28 / 40

You do not have a hazardous materials endorsement on your commercial driver license. When can you legally haul hazardous materials?

Only when the vehicle does not require placards.

Never.

Only when the shipment does not cross state lines.

Only in the event of a federally declared emergency situation.

29 / 40

How should the trailer be lined up when preparing to back the tractor up?

directly in front of the trailer

about 12 degrees to the right

directly behind the trailer

about 12 degrees to the left

30 / 40

The front trailer supports should be____before driving away.

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

31 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

6 seconds

4 seconds

5 seconds

3 seconds

32 / 40

Class A explosives must not be transported in a combination vehicle if the vehicle includes:

A 200 inch wheelbase trailer.

None of these answers are correct.

A placarded cargo tank.

Two or more trailers.

33 / 40

With the controlled braking method, you _____?

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

lightly apply braking pressure

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

repeatedly tap the brakes as fast as you can

34 / 40

You need to be extra careful when driving smooth bore tanks:

All answers listed.

When unloading or loading.

When stopping or starting.

When hauling food or milk products.

35 / 40

Why should you test the tractor protection valve?

to avoid loss of air from the air hose

to avoid loss of air from the trailer brakes

to avoid the emergency brakes kicking on due to loss of air

all answers listed

36 / 40

You should follow the posted speed limits for curves and be aware of:

All answers listed.

A rollover may occur even when driving at the posted speed limit.

The posted speed limit may be too high for safety.

The higher center of gravity on a tank truck.

37 / 40

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

none

it depends on how heavy the load is

1/2 to 1 inch

1 to 1 1/2 inches

38 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

a low air warning device should sound before the air pressure drops below 40 psi

a low air warning device should sound before the air pressure drops below 60 psi

none of the answers listed

the tractor protection valve and parking brake valve should pop out before air pressure falls below 60 psi for combination vehicles

39 / 40

Cargo tanks are:

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

Bulk packaging permanently attached to your vehicle.

Only made in one size.

Bulk packaging temporarily attached to your vehicle.

40 / 40

The shipping papers for hazardous materials can be found:

Any of the above locations.

In a pouch on the driver's door.

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

In clear view, within reach while driving.

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