R10-18a Photo Enforced Traffic Sign - Official MUTCD Design & Dimensions #1840661 (License: Personal Use)

This image displays the official Federal Highway Administration (FHWA) MUTCD-compliant R10-18a sign design, indicating photo-enforced traffic signal violations. It includes exact dimensional tolerances (e.g., 42-inch height, 30-inch width), retroreflective color specs (red, yellow, green circles on black background), and typographic guidelines (bold uppercase "PHOTO ENFORCED" with reduced character spacing). The diagram also notes border thicknesses, circle diameters, and placement coordinates for regulatory compliance.

Used by transportation engineers, municipal planners, and sign manufacturers to fabricate or verify compliance of automated enforcement signage at intersections. Matches user intent for sourcing authoritative sign specs, designing traffic control systems, or preparing bid documents.