Free New Jersey CDL Practice Test (2026)
Practice the New Jersey CDL permit test the way it is really written, with the correct answer and an explanation on every question.
New Jersey CDL Requirements
5-Question NJ Challenge
Real general knowledge questions, with the answer and an explanation after each one.
When attempting to pass another vehicle at night, you should:
New Jersey CDL permit test: what to expect
The written exam most people call the New Jersey CDL permit test is the general knowledge test, and passing it is what gets you a commercial learner's permit rather than the license itself. You need 80% to pass, a federal standard that is the same in every state. The number of questions is set by New Jersey, and our practice tests use the common 50-question format.
Once you hold the permit you have to keep it for at least 14 days before you are allowed to attempt the skills test, so it is worth sitting the written exam as early as you can. Practice below until you are clearing New Jersey's standard comfortably rather than scraping it.
How to get a CDL in New Jersey
To obtain a Commercial Driver's License in the New Jersey, you must first pass the General Knowledge exam. Depending on the type of vehicle you intend to drive, additional endorsements like Air Brakes, Tanker, or Hazmat may be required.
- Provide proof of US citizenship or lawful permanent residency.
- Hold a valid non-commercial driver's license.
- Pass a Department of Transportation (DOT) medical exam.
- Obtain a Commercial Learner’s Permit (CLP) and wait at least 14 days.
- Pass the skills test in a vehicle of the same class as you intend to drive.
Practice every part of the New Jersey CDL test
Your New Jersey exam is split into separate knowledge tests. Drill each one until you're confident.
5 New Jersey CDL Practice Questions and Answers
Here are 5 sample New Jersey general knowledge questions with the right answer and a quick explanation for each. Read through them, then take the quiz above to see how you do without looking.
1. When attempting to pass another vehicle at night, you should:
- A. Turn off your headlights so they don't see you coming
- B. Signal early, check your mirrors frequently, and ensure you have enough clear distance (correct answer)
- C. Tailgate them closely until they pull over
- D. Flash your high beams continuously during the entire pass
Why: Passing at night is dangerous due to limited visibility. You must signal early, check blind spots, and be absolutely certain there is no oncoming traffic hidden in the darkness.
2. What is the primary purpose of a clutch brake in a manual transmission commercial vehicle?
- A. To slow the vehicle down on steep downgrades
- B. To stop the transmission input shaft so you can shift into a starting gear from a dead stop (correct answer)
- C. To provide extra braking power when the service brakes fail
- D. To assist with downshifting when traveling at highway speeds
Why: The clutch brake stops the gears from turning so you can shift into a starting gear (First or Reverse) from a complete stop without grinding.
3. On a divided highway, exactly how far behind the vehicle should the second warning triangle be placed?
- A. 10 feet
- B. 50 feet
- C. 100 feet (correct answer)
- D. 200 feet
Why: The second warning triangle on a divided highway is placed 100 feet behind the vehicle in the center of the lane or shoulder where the vehicle is stopped.
4. If you begin to feel sleepy while driving at night, what is the safest course of action?
- A. Turn up the radio and roll down the window
- B. Drink heavily caffeinated beverages and continue driving
- C. Slap your face and chew gum
- D. Pull off the road at a safe place and get some sleep (correct answer)
Why: The only proven cure for drowsiness is sleep. Techniques like opening windows or turning up the radio do not prevent micro-sleeps or cure fatigue.
5. When inspecting brake drums, a crack is considered critical and puts the vehicle out of service if it exceeds what length?
- A. One-fourth the width of the friction area.
- B. One-half the width of the friction area. (correct answer)
- C. Three-fourths the width of the friction area.
- D. Any crack visible to the naked eye puts it out of service.
Why: Brake drums (or rotors) must not have cracks longer than one-half the width of the friction area. If they do, they are structurally compromised.
CDL Job Market in New Jersey
If you want top dollar, New Jersey is the place. It pays CDL drivers more than any other state in 2026, with a BLS-based average of $67,630 a year. Port drayage out of Newark and Elizabeth keeps Class A trucks busy, and because the state does so much of the final-mile work for New York City, there's no shortage of Class B and vocational routes either. Learn to handle NJ's tight urban driving and the annual bonuses tend to follow.
NFI Industries, Best Transportation, UPS, Central Transport
The Port of New York and New Jersey is the busiest on the East Coast, so drayage and local delivery work is everywhere. Median annual CDL wage: $67,630 (2026, #1 nationally).