Free CDL study aid · New Jersey Commercial Driver License ManualChecked

New Jersey CDL Practice Test

50 questions, and you pass with 80% (40 correct). Practice with 2,100+ questions for all 8 New Jersey CDL knowledge tests.

  • 8knowledge tests
  • 80%to pass each
  • 14 daysminimum on a CLP
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General Knowledge

  • 50 questions · 40 to pass

Complete entry-level driver training, apply to the TSA, submit fingerprints for its background check, and pass the Hazardous Materials test.

Start General Knowledge

Build your New Jersey CDL plan

What will you drive?

Anything special about the vehicle or load?

Pick a class first: then the ones that fit it unlock.

All 8 New Jersey CDL tests
Sample question

New Jersey CDL General Knowledge

You're hauling an over-width load. What should your walk-around include?

Practice General Knowledge

  • Test mode matches the real knowledge test’s size and pass mark, scored at the end.
  • Endorsement tests like Hazmat and Tank Vehicles each have their own practice.

Every New Jersey CDL knowledge test

Everyone in New Jersey takes General Knowledge; your class and loads add the rest. Why 80% on every test

New Jersey Commercial Driver License ManualMarch 2025checked

Federal rules on top of the New Jersey manual

Read the federal CDL rules
  • Training before the skills test
  • Drug & Alcohol Clearinghouse
  • Medical card sent electronically
  • Age 21 to cross state lines

New Jersey CDL questions and answers

31 questions

The knowledge tests

Which CDL knowledge tests do I need in New Jersey?

Everyone takes the General Knowledge test, and it must be passed before any endorsement test. Then add the tests for what you'll drive: Air Brakes (skip it and you get an L restriction), Combination Vehicles for Class A, and the endorsement tests for doubles or triples (T), passengers (P), school buses (S, which also needs P), tank vehicles (N) and hazardous materials (H).

How many questions are on the New Jersey CDL general knowledge test?

50 questions, and you pass with 80% (40 correct). Each endorsement has its own separate test, also passed at 80%. The tests are multiple choice on a computer.

What does this New Jersey CDL practice test cover?

The Commercial Driver License Manual the New Jersey MVC posts (version March 2025): General Knowledge (Sections 1, 2 and 3), Transporting Passengers, Air Brakes, Combination Vehicles, Doubles and Triples, Tank Vehicles, Hazardous Materials and School Buses. The manual's chart shows which sections to study for each license class and endorsement. New Jersey Commercial Driver License Manual p. 1-5

What happens if I fail a New Jersey CDL knowledge test?

Wait seven days, then take it again. There is no limit on attempts while your examination test receipt is valid (180 days); after that it must be renewed. Passing scores count for 360 days.

Can I take the New Jersey CDL tests in Spanish?

Yes, every CDL knowledge test is offered in English or Spanish except the Hazardous Materials test, which is in English only. There are no audio versions, and interpreters aren't allowed for the knowledge or road tests.

What score do I need to pass the New Jersey CDL knowledge tests?

80% on each of the 8 tests, each graded on its own (General Knowledge: 40 of 50). Every test's numbers are in the table on this page. Always confirm the current tests with the New Jersey Motor Vehicle Commission (MVC). Why 80% in every state

Getting your New Jersey CDL

How old do you have to be for a CDL in New Jersey?

At least 18, with a New Jersey basic (Class D) license first. Under 21 you may drive only within New Jersey and can't get the hazmat or passenger endorsement; driving across state lines, hazmat, school bus and passenger work need age 21 and three years of driving experience.

What do I need to apply for a New Jersey commercial learner permit (CLP)?

A basic New Jersey license, 6 Points of ID (including your Social Security card, proof of address and lawful presence), the CDL application, a CDL Holder Self-Certification form, a medical examiner's certificate on file with the National Registry when your type of driving requires one, vision of 20/40 in each eye, and the ability to tell red, green and amber apart. You also buy a non-refundable examination test receipt before the knowledge tests.

How long is a New Jersey CLP valid, and when can I take the skills test?

A CLP is valid for 180 days and must be carried with your New Jersey driver license. Practice with a qualified CDL holder for at least 14 days, unless waived, before the skills test, which covers a pre-trip inspection, basic control skills and a road test in a vehicle you supply. If you fail, wait at least 14 days to retest.

Do I need entry-level driver training (ELDT) for a New Jersey CDL?

Yes, from a provider on FMCSA's Training Provider Registry: before the Hazardous Materials knowledge test, and before the skills test for a first Class A or B CDL, a first passenger, school bus or hazmat endorsement, or an upgrade.

Which vehicles need a Class C CDL in New Jersey?

Vehicles carrying placarded hazardous materials, vehicles built for 16 or more people including the driver, vehicles that carry children to or from school, camp, child care and similar places, and vehicles used for hire that carry 8 to 15 people including the driver.

Who doesn't need a CDL in New Jersey?

Among others: taxi drivers carrying fewer than seven passengers and ride-sharing van drivers, firefighters, rescue and first-aid squad drivers, farmers hauling their own goods within 150 miles of the farm, military operators, operators of construction equipment not built for public roads, and people driving recreational vehicles for personal use.

What do the restriction codes on a New Jersey CDL mean?

E: no manual-transmission vehicle (you tested in an automatic). K: within New Jersey only. O: no tractor-trailer. Q: 15 passengers or fewer. T: probationary driver with a supervising driver. V: medical variance. Z: no full air brake vehicle. An L restriction is added if you don't pass the air brakes tests.

How much do the New Jersey CDL tests and license cost?

New Jersey Motor Vehicle Commission (MVC) lists the current fees for the commercial learner permit, the CDL tests and the license on its official fee page.

Can I keep the parts of the New Jersey CDL skills test I passed?

Yes, once you've passed the pre-trip inspection. New Jersey lets you bank passed skills-test scores for one CLP cycle, 180 days from when the permit was issued. Bring the fail/denial form from the earlier attempt to the retest.

Is there a limit on New Jersey CDL road test attempts?

There's no set number, but after several failures the MVC can make you wait six months before testing again. Each retest is at least 14 days after a fail, and the CLP and test receipt must be renewed once their 180 days are up.

What vehicle do I need for the New Jersey CDL road test?

Your own, as the MVC doesn't lend one. It must suit the class or endorsement you're testing for and have a current inspection sticker, registration, an insurance card, legible GVWR placards and no cargo on board. Bring a licensed driver qualified for it, along with your test receipt and CLP.

Does registered weight count toward a New Jersey CDL class?

Yes. New Jersey uses the manufacturer's weight rating or the registered gross weight, whichever is higher, so a truck registered at 26,001 pounds or more needs at least a Class B CDL. Air brakes alone don't make a lighter truck need a CDL.

What side vision do I need for a New Jersey CDL endorsement?

At least 70 degrees of peripheral (side) vision in each eye, on top of 20/40 sight in each eye and being able to tell red, green and amber apart.

Hazmat, medical and keeping your CDL

How do I get a hazmat endorsement on a New Jersey CDL?

Complete entry-level driver training, apply to the TSA, submit fingerprints for its background check, and pass the Hazardous Materials test. You must be a U.S. citizen or lawful permanent resident. The endorsement lasts four years in New Jersey; to renew it, get fingerprinted at least 45 days before your license expires.

What extra checks do New Jersey passenger and school bus drivers face?

Every passenger endorsement holder needs a medical examiner's certificate on the National Registry, whatever their type of driving, and from September 1, 2026 a fingerprint receipt or results are needed when a CLP with a P endorsement is issued. School bus drivers also need federal and state background checks and a Department of Education employment history approval.

How does a DUI in my own car affect a New Jersey CDL?

A first DUI conviction in a passenger vehicle brings a one-year CDL suspension on top of the basic license suspension, and a second one permanently revokes the CDL. After a DUI you also can't hold or apply for the passenger endorsement for three years.

How do I move an out-of-state CDL to New Jersey?

If you'll live here more than six months, transfer it within 60 days of becoming a resident or before it expires: bring your CDL to a driver testing center, pass a vision test, bring a medical examiner's certificate and a signed self-certification form, and buy a transfer permit. Hazmat holders take the written test again and submit fingerprints; passenger holders submit fingerprints too.

Has any CDL rule changed since the New Jersey manual was printed?

Yes, a few federal rules. A first violation of an out-of-service order now costs your CDL for at least 180 days (the manual still says 90). If your license is suspended, revoked or canceled, or you are disqualified, tell your employer by the end of the next business day (the manual says within two business days). And for exams since June 23, 2025, FMCSA sends your medical examiner’s certificate to the state electronically, so you no longer hand in a paper copy.

Which New Jersey self-certification categories need a medical certificate?

Categories 1 (non-excepted interstate) and 3 (non-excepted intrastate) need a valid medical examiner's certificate on the National Registry. Categories 2 and 4, the excepted ones, need only the CDSC-1 self-certification form, unless you hold a passenger or school bus endorsement. Drivers under 21 must choose category 3 or 4.

What happens if my New Jersey medical certificate or self-certification lapses?

The MVC decertifies and downgrades your CDL, and you can no longer legally drive a commercial vehicle. That happens if there's no signed self-certification form on file, or no valid electronic medical certificate or variance on the National Registry when your category needs one. A CDL can't be renewed until you comply.

Do older school bus drivers need extra medical exams in New Jersey?

Yes. Besides the federal medical certificate, school bus (S) drivers aged 70 to 74 give their employer a New Jersey medical exam form each year, by June 1, and drivers 75 and older every six months. Skipping it can cost you the right to drive a school bus.

Do tickets in my own car count against a New Jersey CLP?

Yes. A CLP holder faces the same tougher penalties as a CDL holder for moving violations, whether the ticket came while practicing in a commercial vehicle or while driving a personal car.

Can I downgrade my New Jersey CDL?

Yes, whenever you like. You can move down a class or take off an endorsement, and if you no longer want commercial privileges at all, a motor vehicle agency can change you back to a basic license.

Can a lifetime CDL suspension be lifted in New Jersey?

Possibly. New Jersey has a Lifetime CDL Suspension Reinstatement Application under its CDL rules. You send it with every supporting document to the MVC's CDL/Bus Unit, which checks whether you meet the criteria and tells you in writing whether you qualify.

How long is a New Jersey CDL valid, and can I renew it by mail?

A CDL lasts four years, but your first one is shortened to end with your current basic license. Renewal is in person at a motor vehicle agency only, never by mail. Bring your 6 Points of ID and, when needed, the self-certification form.

Sources: NJ MVC: CDL endorsements · NJ MVC: CDL tests · NJ MVC: CDL frequently asked questions · NJ MVC: Getting your Commercial Driver License · NJ MVC: Commercial Learner Permits (CLP) · NJ MVC: Commercial Driver License (CDL) · New Jersey MVC: License and Permit Fees · NJ MVC: Hazardous Material (HAZMAT) Endorsements · NJ MVC: Commercial Driver License Violations · NJ MVC: Transfer out-of-state CDL · eCFR: 49 CFR Part 383, Commercial Driver’s License Standards · New Jersey MVC: CDL Self-Certification and Medical Examiner Certificate · New Jersey MVC: School Bus Driver Requirements 70 Years of Age and Older