R10-31P At Signal — Plaque
Identifies the signal location to which the associated parent-sign instruction applies.
- Sign Name
- At Signal — Plaque
- MUTCD Code
- R10-31P
- Sign Category
- Regulatory Signs
Specifications
- Shape
- Rectangle (Horizontal)
- Color / legend
- White background, black legend and border
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.
This is a supplemental plaque, not a standalone regulation; verify the parent sign and location.
- Drawing size 124" × 9"
When & Where It's Used
- Signal control and supplemental instructions
Placement Context
- Where it sits
- Use as a supplemental plaque with the applicable advance signal instruction.
- CA MUTCD reference
- CA MUTCD 2026 §2B.59
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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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