California Car / Permit practice question · Road Signs

A red circle with a diagonal red slash drawn over a symbol tells you that:

Answer choices

• The action shown inside the circle is not allowed— Correct answer
• The action shown is strongly recommended
• You are given the right-of-way for that movement
• The road ahead is permanently closed

Why this is the answer

A red circle with a red line through it is a prohibition. The picture inside shows what you may not do, and words may be added. It does not recommend the action, give you the right-of-way, or mean the road is closed. Follow the sign's instruction, just as you would with any red-and-white regulatory sign.

Source: California Driver Handbook — Regulatory Signs

Content reviewed against official driver handbooks · August 12, 2026