R10-10c · Left (Right) Turn Lane Signal
R10-10c Official Dimension Drawing
The complete official drawing contains the dimensions and design details for this sign. A separate size chart has not been transcribed for this entry.
Open R10-10c Official Dimension Drawing (PDF, opens in a new tab)Official PDF · Opens in a new tab
Read Dimensions in the Official PDF
Source size discrepancy: the FHWA drawing schedules show 24 × 30 and 30 × 36 inches. CA MUTCD 2026 Table 8B-1 lists 24 × 36 minimum and 30 × 42 conventional-road sizes. Confirm the required California design and dimensions with the reviewing agency before selecting or fabricating this sign.
Check the drawing's complete size schedule and variant notes. The sign artwork shown above has no dimension annotations.
California Application & Variants
Source size discrepancy: the FHWA drawing schedules show 24 × 30 and 30 × 36 inches. CA MUTCD 2026 Table 8B-1 lists 24 × 36 minimum and 30 × 42 conventional-road sizes. Confirm the required California design and dimensions with the reviewing agency before selecting or fabricating this sign.
Official References
- CA MUTCD 2026 §8D.11 and 8D.12 (opens in a new tab)
- FHWA Standard Highway Signs — Release 2 official vector and layout archive (opens in a new tab)
- CA MUTCD 2026 Table 8B-1 — grade crossing sign sizes (opens in a new tab)
- California MUTCD (Caltrans) (opens in a new tab)
- Federal MUTCD — 11th Edition (FHWA) (opens in a new tab)
- Caltrans Sign Charts (opens in a new tab)
- FHWA Standard Highway Signs (opens in a new tab)
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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