Speed Limit 55 Sign - Official U.S. Road Signage Guide #3408669 (License: Personal Use)

This is a standard MUTCD-compliant regulatory sign used across the United States to indicate a maximum speed of 55 miles per hour. The sign features a white background with bold black uppercase text and numerals, enclosed by a thin black border for enhanced contrast and readability from a distance. It adheres to federal highway design standards for uniformity and driver comprehension.

Commonly used on rural highways, interstates, and state roads where 55 mph is the legally enforceable speed limit; serves as visual reinforcement for drivers and supports law enforcement compliance. Matches user intent for traffic regulation reference, driver education, or transportation policy research.