This guide summarizes the MUTCD requirements and practical application guidance for the W20-7(CA) FLAGGER (CALIFORNIA) (SYMBOL) sign. Use this resource to understand when it is required, how to place it correctly, and how to maintain clear visibility for safe operations.
Caltrans and local-agency flagging operations
Advance warning area, ahead of the work.
Mount at the standard height and setback for the roadway with clear sight lines.
High reflectivity and clear sight lines are essential day and night.
The California application of the Flagger warning sign, reflecting CA MUTCD and Caltrans flagging practice, sizing, and fluorescent orange sheeting. The CA MUTCD adopts the federal W20-7 flagger symbol design (orange diamond, flagger silhouette); the face shown is the official FHWA artwork from Standard Highway Signs 2024 Release 3 (issued 12/20/24).
The California application of the Flagger warning sign, reflecting CA MUTCD and Caltrans flagging practice, sizing, and fluorescent orange sheeting. The CA MUTCD adopts the federal W20-7 flagger symbol design (orange diamond, flagger silhouette); the face shown is the official FHWA artwork from Standard Highway Signs 2024 Release 3 (issued 12/20/24). In the field, W20-7(CA) Flagger (California) (symbol) is typically positioned at the advance warning area, ahead of the work. Common deployments include caltrans and local-agency flagging operations; paired with BE PREPARED TO STOP; sized per Caltrans sign specifications. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
Advance warning area, ahead of the work.
Typical minimum: 48" × 48" on conventional roads; 60" × 60" on expressways and freeways.
California applies the flagger symbol warning with Caltrans flagging procedures, commonly paired with BE PREPARED TO STOP and sized per Caltrans specifications.
Go to California NotesEducational 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. Written against California MUTCD 2026 (effective January 18, 2026) and the Federal MUTCD 11th Edition. Official sources last verified June 2026.
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