Knowledge test — New Jersey Permit Test
Knowledge test on the New Jersey permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.
The rules
The New Jersey knowledge test asks 50 questions.
Knowing the length of the paper tells a learner how much a single wrong answer costs them.
The knowledge test consists of 50 questions
A New Jersey knowledge test is passed with 40 of the 50 questions correct, which is 80 percent.
Forty right out of fifty is the bar. Ten misses is the whole margin a learner has.
80 percent, or 40 of the 50 questions, must have
A basic license applicant must have 20/50 vision, with or without corrective lenses.
Most of what a driver does is a response to something seen. The screening sets a floor on that.
Basic License Applicants: 20/50 vision with or without corrective lenses.
A New Jersey knowledge test result stays valid for two years.
A learner who passes the paper has two years to finish the driving part before the result goes stale.
Test results are valid for two years.
On the test
How many questions does the New Jersey knowledge test ask?
50 questions. Knowing the length of the paper tells a learner how much a single wrong answer costs them. New Jersey Driver Manual, p.30: “The knowledge test consists of 50 questions”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
- Free to start: a 10-question test and the first section of cards. No sign-up and no account.
- Paying opens the rest of the cards, unlimited full-length practice tests, and retests built from exactly the questions you got wrong.
- Every level up to Prepared — 3 tests passed in a row.
- Do the work, fail the real exam, and we refund you.
Where these come from
Every rule here is checked against New Jersey Driver Manual, published by the New Jersey Motor Vehicle Commission, and against the state code itself. Last checked 2026-09-15.