CDL — Bằng Lái Thương Mại in California

Testing agency

California DMV

Written-test languages

English · Arabic · Chinese · Punjabi · Russian · Spanish

To pass

80% (General Knowledge 40/50)

Fee

Commercial Class A/B original application $100 (bundled; no separate test fee)

Retake policy

3 attempts per knowledge test; no waiting period to retake

Languages note

Commercial knowledge tests in 6 languages (CA Commercial Driver Handbook §1). The skills test must be in English (interpreter prohibited).

Languages, fees and rules change — confirm with the official source linked for each state. 'To confirm' = not yet confirmed from an official source (shown honestly, never guessed). The 2025 federal English-Language-Proficiency action is roadside out-of-service enforcement, not a state test-language mandate; states set their own written-test languages (Texas and Florida moved to English-only in 2026).