California CDL — test facts & training hub
California's CDL knowledge tests follow the national model — same lengths, same 80% pass mark — with California-specific details published in the California Commercial Driver Handbook (DL 650). Here are the facts that matter, then the trainer.
50General Knowledge questions · 80% to pass
25Air Brakes questions · 80% to pass
20Combination questions · 80% to pass
80%Pass mark on every California CDL knowledge test
Good to know in California
- One national bank: because California's manual tracks the federal model, the national question banks in our trainer cover the substance of the California tests. Use the California Commercial Driver Handbook to confirm state-specific details.
- Fees and appointments: California DMV fees and scheduling change periodically. Check the current figures in the DL 650 handbook and on the official California DMV site before your visit — we won't invent a number.
- Retakes: if you miss the 80% line, California lets you retest — the smart move is to fix your weakest manual sections first. Our failed-test guide lays out the plan.
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