R3-1 No Right Turn
Prohibits a right turn at the intersection or location where the sign is posted, making it a traffic law violation to turn right.
- Sign Name
- No Right Turn
- MUTCD Code
- R3-1
- Sign Category
- Regulatory Signs
Specifications
- Shape
- Square
- Color / legend
- White background, black legend, red circle and slash
Sizes & Dimensions (inches)
These are dimensions shown on the linked layout. Select the required size using the applicable MUTCD and agency requirements; the smallest drawing size is not necessarily the permitted minimum.
- Layout 124" × 24"
- Layout 236" × 36"
- Layout 348" × 48"
When & Where It's Used
- Prohibiting right turns at intersections affected by lane closures
- Controlling turning movements at construction-zone approaches
- Temporary turn restrictions due to pavement work on receiving roads
Placement Context
- Where it sits
- At the point where the regulation applies, per CA MUTCD Part 2B.
- CA MUTCD reference
- CA MUTCD 2026 Chapter 2B — Regulatory Signs, Barricades, and Gates
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Educational reference only. This is not an official Caltrans, FHWA, or local agency publication and is not legal or engineering advice. Always verify sign selection, size, placement, spacing, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency’s requirements. Local jurisdictions may impose additional requirements, and final selection, placement, and dimensions may require engineering judgment or agency approval. Reference editions: California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition with Revision 1.
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