R12-1 Weight Limit
Indicates the posted gross vehicle weight restriction for a highway section or structure.
- Sign Name
- Weight Limit
- MUTCD Code
- R12-1
- Sign Category
- Regulatory Signs
Specifications
- Shape
- Rectangle (Vertical)
- Color / legend
- Black legend and border on white 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.
Dimensions checked against the exact official drawing. California Table 2B-1 governs application-size selection; example weights do not establish a legal load limit.
- Official drawing size24" × 30"
- Official drawing size36" × 48"
California Application & Variants
Use the authorized load limit and consistent units. The illustrated 10 tons is an example, not a statewide limit.
When & Where It's Used
- Weight-restricted detour and hauling-route review
Placement Context
- Where it sits
- At each end of the affected highway section or at the restricted structure, with advance notice allowing prohibited vehicles to detour or turn around..
- CA MUTCD reference
- CA MUTCD 2026 §2B.64
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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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