Speed Limit 55 Sign - Official Road Signage for 55 mph Zones #1778065 (License: Personal Use)

This is a federally standardized regulatory traffic sign used across the United States to indicate a maximum legal speed of 55 miles per hour. The sign features high-contrast black text on a white background with a distinctive rounded rectangular border, designed for optimal visibility and compliance under daylight and nighttime conditions. It complies with MUTCD (Manual on Uniform Traffic Control Devices) specifications for size, font, and layout.

Commonly placed along highways, rural roads, and state routes where speed limits are set at 55 mph; used by transportation departments, driver education resources, and traffic safety campaigns to inform drivers of legal speed restrictions.