W10-1 Railroad Crossing Advance Warning
Gives advance warning of a railroad grade crossing.
- Sign Name
- Railroad Crossing Advance Warning
- MUTCD Code
- W10-1
- Sign Category
- Warning Signs
Specifications
- Shape
- Circle
- Color / legend
- Black legend and border on yellow background
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.
Use California Table 8B-1 and its notes for roadway selection; pathway/sidewalk applications also reference Table 9A-1. Federal drawing sizes do not establish California installation minimums.
- Official drawing size24" diameter
- Official drawing size30" diameter
- Official drawing size36" diameter
- Official drawing size48" diameter
California Application & Variants
Round yellow railroad advance-warning sign with a black cross and two R letters. California Table 8B-1 lists roadway sizes of 36 and 48 inches in diameter.
Size selection: Use California Table 8B-1 and its notes for roadway selection; pathway/sidewalk applications also reference Table 9A-1. Federal drawing sizes do not establish California installation minimums.
When & Where It's Used
- Railroad or light rail crossing review
Placement Context
- Where it sits
- Round yellow railroad advance-warning sign with a black cross and two R letters. California Table 8B-1 lists roadway sizes of 36 and 48 inches in diameter..
- CA MUTCD reference
- CA MUTCD 2026 §8B.06
Related Signs
Browse Warning Signs
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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