This page shows the common MUTCD standard sizes for the RS-031 BUS sign. Use this information to select the appropriate size based on roadway speed, traffic conditions, and visibility needs. All dimensions are in inches.
Standard nominal sizes per MUTCD.
Size selection based on speed, ADT, and roadway environment.
High-intensity reflective sheeting required at night.
Proper mounting height and placement for optimal visibility.
H (Height)For a square, Width (W) and Height (H) follow the nominal size at each dimension.
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. 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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