Take a free New Jersey CDL practice test online: a full 50-question paper with every answer explained, no sign-up, scored by topic. The full 124-question bank and the timed simulator are $14.99 for 30 days.
CDL General Knowledge (New Jersey): a 124-question practice bank for the real CDL Permit & Endorsement Exams standard, 2 full papers of 50 questions each with no repeats, every question written to the regulation it comes from.
Where these questions come from
Every question in this bank cites a source -- primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this exam's citations.
Take a full practice test free. 50 real questions built to the exam's domain weights, every answer explained, no sign-up required, with a domain-by-domain score at the end.
Want the whole bank for CDL General Knowledge (New Jersey)? One payment of $14.99 gives you 30 days of full access to this exam. It does not renew. No account needed to buy, and there is a 7-day money-back guarantee.
The knowledge tested here is federal (FMCSA) and identical nationwide -- what varies by state is who administers it and under what terms. Researched directly from New Jersey Motor Vehicle Commission (NJ MVC)'s own site, verified 2026-09-03.
14 days (unless waived) — official MVC text: 'Unless waived, CLP holders must wait a minimum of 14 days before taking the skills test.'
CLP validity
180 days
Retake wait after a failed knowledge test
Knowledge test: 7-day wait after failure. Road/skills test: at least 14 days (2 weeks) wait after failure. MVC pages differ on how long a passed test stays valid: one gives 180 days for the $125 test receipt, another gives 360 days for test scores, so confirm the validity period with the MVC before you rely on it.
Spanish-language knowledge test
Available
Confirmed via official NJ MVC CDL FAQ page: 'It is administered in Spanish, or English with the exception of the HAZMAT endorsement test. The HAZMAT test is administered in English only.' Note that CDL testing is limited to English and Spanish only — NOT the full multilingual list (Arabic, Chinese, French, Korean, Polish, Portuguese, Russian, Japanese, Hindi, Albanian, Turkish) that NJ offers for its REGULAR non-commercial license test. No evidence of a 2025/2026 change was found; recommend re-verifying close to publish date given the active federal English Language Proficiency enforcement climate, since the source page carries no visible 'last updated' date.
CDL renewal must be completed in person at a motor vehicle agency — mail renewal is not an option.
Applicants under 21 may only operate in intrastate (NJ-only) commerce and cannot receive HazMat or passenger endorsements.
Effective September 1, 2026, a fingerprint receipt and/or completed background-check results will be required at CLP issuance for anyone requesting a Passenger (P) endorsement.
The $125 knowledge-test fee is described as a non-refundable 'commercial examination test receipt fee,' distinct from the CDL license issuance fee.
5 real sample questions
What is the most important reason for performing a pre-trip inspection before every trip?
A. To satisfy your dispatcher that the truck left on time
B. To find problems that could cause a crash or breakdown before they happen on the road
C. To reduce the number of miles logged for the day
D. To avoid having to fill out any paperwork later
Show answer and reasoning
Correct answer: B. To find problems that could cause a crash or breakdown before they happen on the road
A: A pre-trip inspection has nothing to do with dispatch timing.
C: Inspection findings do not change logged mileage.
D: A pre-trip inspection actually creates required paperwork (the inspection report), not less of it.
Source: FMCSA CDL Manual §2.1.1
Under the 30-minute break requirement in 49 CFR 395.3, a driver must take a break after accumulating how many cumulative hours of driving time?
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Show answer and reasoning
Correct answer: C. 8 hours
A: 4 hours is shorter than the threshold that triggers the required break.
B: 6 hours is shorter than the threshold that triggers the required break.
D: 10 hours exceeds the threshold; the break is required before reaching that point.
Source: 49 CFR 395.3
A roadside inspector determines that a commercial motor vehicle has a safety defect serious enough to be an immediate hazard. What is the inspector authorized to do under 49 CFR 396.9?
A. Issue a warning only, since only the motor carrier can pull a vehicle from service
B. Declare the vehicle "out of service" until the defect is corrected
C. Impound the vehicle permanently
D. Fine the driver but allow the vehicle to continue to the next scheduled stop
Show answer and reasoning
Correct answer: B. Declare the vehicle "out of service" until the defect is corrected
A: 396.9 gives the inspector authority to declare the vehicle out of service, not merely to warn.
C: Out-of-service means repaired and released, not permanent impoundment.
D: An out-of-service order prohibits further operation until the defect is fixed, not a fine-and-continue arrangement.
Source: 49 CFR 396.9
Under the federal tire tread depth standard, what is the minimum tread depth allowed in any major tread groove on a steering axle tire?
A. 1/32 inch
B. 2/32 inch
C. 4/32 inch
D. 6/32 inch
Show answer and reasoning
Correct answer: C. 4/32 inch
A: 1/32 inch is below the federal minimum for any position.
B: 2/32 inch is the minimum for tires on axles other than the steering axle.
D: 6/32 inch is deeper than the regulation requires, though additional depth is never unsafe.
Source: 49 CFR 393.75
What is the minimum tread depth required on non-steering axle tires of a commercial motor vehicle?
A. 1/32 inch
B. 2/32 inch
C. 3/32 inch
D. 4/32 inch
Show answer and reasoning
Correct answer: B. 2/32 inch
A: 1/32 inch is too shallow to meet the federal standard for any tire position.
C: 3/32 inch is not the regulatory threshold; the rule specifies 2/32 inch for non-steering tires.
D: 4/32 inch is the steering-axle minimum, not the standard for other axle positions.
Where can I take a free New Jersey CDL practice test online?
Right here. CertQuestUSA's free New Jersey CDL practice test online is a full 50-question practice paper built to the real exam's domain weights, with every answer explained, with no sign-up and no credit card, and shows your score by topic at the end. The full 124-question bank, with every answer explained and cited to the regulation it comes from, is $14.99 for a 30-day pass that never renews.
How many questions are on the CertQuestUSA CDL General Knowledge (New Jersey) practice test?
124 questions total, split into 2 full papers of 50 each with no repeats across papers.
What topics does the CDL General Knowledge (New Jersey) test cover?
13 domains, with the heaviest weight on Vehicle Inspection (14%), Basic Control & Shifting (10%), and Emergency Maneuvers & Skid Control (10%).
Where do CertQuestUSA's CDL General Knowledge (New Jersey) questions come from?
Primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free CDL General Knowledge (New Jersey) practice test?
Yes -- one full 50-question practice paper built to the exam's domain weights, free with no sign-up, with every answer explained and a domain-by-domain score at the end.
Still need a CDL school, a DOT physical, or tuition help?
CDL Schools USA, our sister site, lists FMCSA-registered schools by state, paid training programs, DOT physical clinics, and WIOA and GI Bill funding.
