US Road Signs & Meanings

Regulatory signs control what drivers must or must not do. They use red, white, and black colors to enforce traffic laws — speed limits, stop, yield, no-turns, no-parking, and other commands. Disobeying a regulatory sign is a moving violation.

Warning signs alert drivers to hazards or changes ahead — curves, merges, slippery roads, school zones, animal crossings. They use yellow diamonds (or yellow-green pentagons for child-related warnings).

Guide signs help drivers navigate — interstate shields, US Route markers, mile markers, exit signs, distance signs. They are typically green or blue and provide directional and informational guidance.

Services signs point to traveler amenities — gas stations, food, lodging, hospitals, rest areas. They are blue squares with white symbols, displayed near interstate exits to help drivers plan stops.

Construction signs warn of temporary work zones, lane closures, flaggers, and detours. They use orange backgrounds (reserved exclusively for temporary traffic control). Doubled fines often apply.