Traffic signsUnited States
Traffic rules
United States
301. Traffic signs
A traffic sign is a standardized device placed along a road to regulate, warn or guide road users. Signs communicate traffic rules, hazards, destinations, services and other information.
In the United States, many warning signs are yellow diamonds. Regulatory signs commonly use white rectangles, while STOP and YIELD signs have distinctive shapes. Drivers must recognize the signs used locally and follow their instructions.
How are traffic signs grouped in the United States?
The MUTCD distinguishes regulatory, warning and guide signs. State traffic law supplies the corresponding driver obligations.
Is a temporary speed limit at roadworks binding in the United States?
Where an authorised temporary regulatory speed limit is in force, you must obey it. A roadworks warning alone should not be mistaken for a new numerical limit, but conditions may require driving more slowly.
