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 slack adjuster is:

2 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

3 / 40

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

4 / 40

When should you avoid using the parking brake?

5 / 40

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

6 / 40

Select the definition for outage:

7 / 40

What kind of surge can occur in a tank with baffles?

8 / 40

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

9 / 40

How should you inspect a converter dolly?

10 / 40

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

11 / 40

Upon what does the amount of liquid you can carry in a load depend?

12 / 40

Your bus is disabled. With riders aboard, the bus may be towed or pushed to a safe place only:

13 / 40

When this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

14 / 40

Which seats not securely fastened to the bus are usually allowed?

15 / 40

Select the true statement in regards to brake drums:

16 / 40

Select which is not an engine compartement belt:

17 / 40

A leak rate for a straight truck or bus air brake system should not exceed _____psi per minute when the engine is off and the brakes are released.

18 / 40

If the hazardous materials are classified as FORBIDDEN you should:

19 / 40

When backing your vehicle, which of the following is NOT recommended

20 / 40

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

21 / 40

Select the true statement about retest markings:

22 / 40

When driving on a clear night with the vehicle lights on, your speed should be such that you can stop within _____.

23 / 40

How do you test the trailer service brakes?

24 / 40

Animals and human foodstuffs should not be loaded in the same vehicle with?

25 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

26 / 40

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

27 / 40

What is the value of the overhead rear-view mirror inside of the bus?

28 / 40

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

29 / 40

When driving in very hot temperatures, you should:

30 / 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?

31 / 40

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

32 / 40

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

33 / 40

When driving with multiple trailers, which one should be right behind the tractor?

34 / 40

The main reason you should pull the dolly out from under a trailer before disconnecting it from the trailer in front is:

35 / 40

Where are shut off valves located on trailers that are doubles or triples?

36 / 40

Air pressure should build___with a dual air system.

37 / 40

This object should be clean with no obstructions, illegal stickers or damage to the glass.

38 / 40

A placarded vehicle must have at least ___ placards?

39 / 40

What is the standee line?

40 / 40

Tires should should be replaced:

Your score is

The average score is 77%

3.7/5 - (4 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:


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.