How Many Questions Are on the New Jersey CDL General Knowledge Test?
The New Jersey CDL general knowledge test has 50 multiple-choice questions, and you need to answer at least 40 of them correctly (80%) to pass. This format is set by federal rule and matches nearly every other state, including New Jersey.
The official test format
The CDL general knowledge test's length and passing score are set by federal regulation (49 CFR Part 383), which is why New Jersey's format matches most other states exactly.
The test covers commercial driving fundamentals common to nearly every CDL applicant nationwide, including vehicle inspection, air brakes, cargo securement, and hours-of-service rules.
Before scheduling the test, New Jersey requires a $125 non-refundable commercial examination test-receipt fee and a 6 Points of ID Verification, including a Social Security card — a more document-heavy process than some other states.
How the questions are distributed by topic
The official test draws from a broad, federally-defined set of topics rather than any single area, which is why understanding the reasoning behind a rule matters more than memorizing an isolated fact.
Our free New Jersey CDL practice tests cover 17 topic areas, including hours-of-service, cargo securement, and air brakes, so you can see which areas need more review.
How our practice tests are structured
Rather than mirroring the exact 50-question format, dmvwrittenexam.com splits its 100+ original New Jersey CDL questions into multiple practice tests, giving you more total repetitions across more topics than one official-length test would.
Each question includes an explanation and a source reference, so you learn why an answer is correct instead of memorizing a letter.
Frequently Asked Questions
Is the New Jersey CDL test the same length as in other states?
Yes, generally. The CDL general knowledge test's 50-question, 80%-passing format is set by federal rule and is consistent across nearly every state, including New Jersey.
What does New Jersey require before I can even schedule the test?
A $125 non-refundable test-receipt fee and a 6 Points of ID Verification, which includes presenting a Social Security card — a more document-intensive process than a standard permit application.
What happens if I don't pass?
Retake policies are set by the MVC and can vary. Since the CLP and test receipt are valid for 180 days, applicants needing multiple attempts may need to renew both if that window lapses.
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Start a free New Jersey cdl practice testLast reviewed: 2026-07-20