Speed Limit 55 Sign - Official Road Signage for 55 mph Zones #1778073 (License: Personal Use)

This is a U.S. MUTCD-compliant regulatory sign with bold black uppercase letters “SPEED LIMIT” above large numerals “55” on a white background, enclosed by a black border. The sign follows federal standards for visibility, font size, and contrast to ensure driver recognition at highway speeds. It is typically mounted on posts or overhead gantries along roadways.

Used on state and federal highways, rural roads, and some urban arterials where the posted speed limit is 55 mph; serves to inform drivers of legally enforceable speed restrictions and supports traffic enforcement and safety compliance.