If you're preparing for the California DMV knowledge test, one of the first things you want to know is exactly what you're walking into — how long the test is, how many questions there are, and what it takes to pass. The answers depend on which type of license you're applying for and, in some cases, your age.
For most people applying for a standard California Class C driver's license — the license that covers everyday passenger vehicles — the written knowledge test consists of 46 questions. To pass, you need to answer at least 38 of those questions correctly, which works out to a passing score of roughly 83%.
These questions are drawn from the California Driver Handbook and cover topics like:
The test is administered at a DMV office, typically on a touchscreen kiosk. California also offers the test in multiple languages, and applicants who qualify may be able to request an oral version under certain conditions.
Applicants under 18 applying for a California provisional instruction permit face a slightly shorter test: 46 questions, same as the standard test, with the same passing threshold of 38 correct. The content is the same — there's no separate "teen test" in terms of format or question count — but the context matters. Teen applicants are working toward a provisional permit under California's Graduated Driver Licensing (GDL) program, not a full unrestricted license. The knowledge test is just the first step in a multi-stage process that includes a supervised driving period and a separate driving test.
California allows applicants to retake the knowledge test if they don't pass on the first attempt. However, there are limits. If you fail the test three times, your application is generally considered closed, and you'll typically need to start the process over — including paying a new application fee. The exact rules around retakes and waiting periods are governed by the DMV and can vary based on your specific situation.
It's also worth noting that the DMV draws questions from a larger test bank, so the specific questions you see may differ from one attempt to the next.
If you're applying for a Commercial Driver's License (CDL) in California — covering vehicles like semi-trucks, buses, and other large commercial vehicles — the knowledge test structure is significantly different.
CDL testing involves multiple components:
| Test Component | Description |
|---|---|
| General Knowledge Test | Required for all CDL applicants; covers core commercial driving rules |
| Combination Vehicles | Required if you plan to drive combination vehicles (e.g., tractor-trailers) |
| Air Brakes | Required if your vehicle has air brakes |
| Endorsement Tests | Additional tests for passengers (P), hazardous materials (H), tankers (N), school buses (S), and doubles/triples (T) |
The number of questions on each CDL sub-test varies. The general knowledge test, for example, contains 50 questions, with a passing score typically set at 80% (40 correct). Endorsement tests are shorter — often 20 to 30 questions each — with their own passing thresholds. CDL requirements are shaped by both California DMV rules and federal FMCSA standards, which apply uniformly across all states.
Applying for a motorcycle license (or M1/M2 endorsement) in California also involves a separate knowledge test. That test contains 30 questions, with a passing score of 26 correct — roughly 87%. The questions focus on motorcycle-specific hazards, gear, braking, and handling, drawn from the California Motorcycle Handbook.
Knowing the question count is useful, but it only tells you so much. Several factors shape the overall experience and outcome of your knowledge test:
The number of questions on California's knowledge test is well-established. But how that test fits into your licensing process depends on your age, the license class you're applying for, whether you're a first-time applicant or transferring from out of state, and whether you're seeking endorsements or have prior test attempts on record.
The California DMV handbook is the most reliable source for current test content — and for anything specific to your situation, the DMV's own records are the only accurate reference.