California CDL General Knowledge Test exam-day guide
California CDL General Knowledge Test · Prepare for the day ahead.
Your checklist
Appointment confirmation and completed CDL application
Bring your appointment confirmation and whatever application paperwork the office told you to complete (for example, an online application summary or DL 44). needs_review - confirm with the provider whether your office requires a paper form or accepts an online submission.
Current California driver's license or ID card
Bring your unexpired California DL or ID. The name on the card should match your application.
Proof of identity and legal presence
If you are applying for an original CDL or permit, bring the identity/legal-presence documents the DMV lists for your situation. needs_review - confirm the exact acceptable documents with the provider before your visit.
Social Security number documentation
Bring your Social Security number and any proof the office requires. needs_review - confirm whether an actual card or another acceptable document is required.
Two proofs of California residency
If residency documents are required for your application, bring two acceptable documents showing your California address. needs_review - confirm the current document list and whether it applies to your transaction.
Medical Examiner's Certificate and self-certification
If your CDL class or permit requires it, bring a valid Medical Examiner's Certificate and complete the self-certification. needs_review - confirm timing, validity, and whether it is required before the knowledge test.
Payment for fees
Bring a payment method for any application or testing fees. needs_review - confirm accepted payment types and the exact fee with the provider.
Corrective lenses or hearing aids if you use them
Bring glasses, contacts, or hearing aids if you need them for vision or hearing screening.
Knowledge of the CDL class and endorsements you are requesting
Know which class and endorsements you are applying for so you take the correct knowledge tests and your application is completed accurately.
A folder with your documents and a pen
Keep documents organized in one folder. Bring a pen in case paper forms are needed.
Leave prohibited items behind or secured
Do not bring notes, phones, smart watches, or other electronic devices into the testing area. Secure them before check-in.
Plan to arrive early
Arrive at least 15–30 minutes before your appointment to allow for check-in, vision screening, and waiting time.
Plan the day
Confirm your appointment date, time, and office location. Gather the documents on the checklist and check expiration dates, especially your ID and medical certificate. Review the areas where your practice scores are weakest, take one or two short practice sets, and avoid cramming new material.
Place all documents in one folder. Confirm the office hours, parking, and route. Re-read your summary notes for signs, sharing the road, speed management, and vehicle inspection basics. Set out clothes and transportation plans, and get a full night's sleep.
Eat a normal meal and arrive early. Keep your folder with you and secure your phone and other devices before entering. Check in at the counter, complete any vision screening or paperwork, and follow staff directions to the testing station.
Read each question completely and watch for words like NOT, EXCEPT, and BEST. Answer every question; if the system allows review, flag uncertain items and return to them. Pace yourself, use scratch paper only if provided, and submit when finished. Review your result with staff and ask what to do next if you did not pass.
Rules to check
Follow all instructions from DMV staff and the test proctor. If you are unsure where to go or what to do, ask before starting the test.
Bring a valid, unexpired photo ID. The name on your ID should match the name on your application. needs_review - confirm the exact ID requirements with the provider.
Do not use phones, smart watches, notes, or other electronic devices in the testing area. Cheating or attempting to copy test content can end your test and affect your application.
Ask about breaks before you begin. Some testing stations allow short breaks; others do not. needs_review - confirm the provider's break policy for your appointment.
The California CDL General Knowledge test is commonly reported as 50 questions with an 80% passing score, but standards can change. needs_review - confirm the current passing score, number of questions, and retake waiting period with the DMV.
If you need a testing accommodation, request it in advance rather than on test day. needs_review - confirm the accommodation process and required notice with the provider.
Keep your test result and any retake instructions. If you do not pass, ask about the waiting period, fees, and which tests you must retake.