This guide summarizes the MUTCD requirements and practical application guidance for the G20-4 PILOT CAR FOLLOW ME sign. Use this resource to understand when it is required, how to place it correctly, and how to maintain clear visibility for safe operations.
Used where pilot car follow me conditions apply on a California project
Beginning of the work zone (advance/upstream).
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 G20-4 Pilot Car Follow Me sign is a California MUTCD work zone guide sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance.
The G20-4 Pilot Car Follow Me sign is a California MUTCD work zone guide sign. It is shown here as an educational reference with the official FHWA Standard Highway Signs layout and California sizing guidance. In the field, G20-4 Pilot Car Follow Me is typically positioned at the beginning of the work zone (advance/upstream). Common deployments include used where pilot car follow me conditions apply on a California project; selected and sized per the CA MUTCD and the roadway type; coordinated with the overall traffic control plan and permit. Always confirm its size, retroreflective sheeting, spacing, and placement against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
Beginning of the work zone (advance/upstream).
Typical minimum: 48" × 24".
G20-4 Pilot Car Follow Me is used in California per the CA MUTCD. Confirm its size, retroreflective sheeting, placement, and spacing against the CA MUTCD 2026 and the reviewing agency before finalizing the traffic control plan.
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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