California Regulatory Signs

Updated July 9, 2026

Regulatory signs tell you the law of the road — what you must do, must not do, and are or are not allowed to do. Most are white rectangles with black legend, and red always signals a prohibition or a required stop. Disobeying a regulatory sign is a moving violation, so these are the signs the DMV test loves to ask about.

How to read regulatory signs

The red octagon (Stop) and the downward red-and-white triangle (Yield) each have their own unique shape so you can identify them even when they are dirty or backlit. A red circle with a slash means the pictured action is banned. Plain black-on-white rectangles state a rule you must follow.

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All regulatory signs (17)

Stop R1-1 Yield R1-2 Speed Limit R2-1 No Right Turn R3-1 No Left Turn R3-2 No U-Turn R3-4 Keep Right R4-7 Do Not Enter R5-1 Wrong Way R5-1a One Way R6-1R Disabled Parking Only R7-8 Railroad Crossing (Crossbuck) R15-1 Right Lane Must Turn Right R3-7R Slower Traffic Keep Right R4-3 No Trucks R5-2 No Parking Any Time R7-1 No Turn on Red R10-11