W10-1aP Exempt — Yellow Plaque
Identifies a specifically authorized exempt crossing with a yellow EXEMPT plaque.
- Sign Name
- Exempt — Yellow Plaque
- MUTCD Code
- W10-1aP
- Sign Category
- Warning Signs
Specifications
- Shape
- Rectangle (Horizontal)
- 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" × 12"
California Application & Variants
Yellow EXEMPT plaque subject to California section 8B.11 conditions for crossing dates and vehicle classes. It is not a blanket school-bus exemption. The white R15-3P and black W46AP(CA) plaques have different California treatment.
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
- Yellow EXEMPT plaque subject to California section 8B.11 conditions for crossing dates and vehicle classes. It is not a blanket school-bus exemption. The white R15-3P and black W46AP(CA) plaques have different California treatment..
- CA MUTCD reference
- CA MUTCD 2026 §8B.11
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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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