SC21(CA) Caution - Frequent Stopping and Backing
Warns that the work vehicle stops and backs frequently, and tells following traffic to stay back 100 feet. It identifies the vehicle's operating pattern and the displayed following-distance instruction.
- Sign Name
- Caution - Frequent Stopping and Backing
- MUTCD Code
- SC21(CA)
- California designation
- California-coded sign
- Sign Category
- California Construction Signs
Specifications
- Shape
- Rectangle (Vertical)
- Color / legend
- Orange background, black legend
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.
- Layout size30" × 42"
Placement Context
- Where it sits
- At the location appropriate to the displayed instruction or warning, using the official drawing and project traffic-control plan.
- CA MUTCD reference
- CA MUTCD 2026 Chapter 6H — TTC Zone Warning Signs
Related Signs
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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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