Modifies provisions relating to outdoor advertising

HB 272 modifies outdoor advertising rules near highways in Missouri, primarily affecting businesses that operate signs along interstate, federal-aid primary, and national highway system routes. The bill permits signs within 660 feet of these highways in industrial/commercial zones or defined unzoned areas, while imposing strict limits: signs cannot exceed 800 square feet (30 feet tall), must avoid obstructing traffic signals, and require specific lighting controls (e.g., no emergency-style lights, shielded floodlights). It also enforces spacing rules (minimum 1,400 feet between signs on the same highway side) and defines "unzoned commercial/industrial land" as areas without zoning that host ongoing business activity, extending 750 feet from the activity along the highway. Existing signs not meeting these rules may remain if they were installed before specific dates (e.g., August 28, 2002).