US Road Signs: Traffic Sign Encyclopedia

Roadway signs in the United States come in different colors: red is only used on stop, yield and prohibition signs. Regulatory signs always have white background, and yellow is used to convey a general warning message. Green signs refer to permitted traffic direction or movement, and fluorescent yellow or green is reserved for pedestrian crossings and school zones. Coral can be found on incident management signs, brown guides you to public recreation or cultural interest sites, orange road signs are used for warning and guidance in roadway work zones, and blue signs guide you to road user services, tourist info or evacuation routes. Standards for the design and application of the signs shown here are outlined in the Manual on Uniform Traffic Control Devices (MUTCD).

No Passing Zone Sign

A no passing zone sign indicates a stretch of road that is not safe to pass other drivers. Learn more about the definition, location, and more.

Yield Sign

The yield sign is a regulatory sign. At a yield sign, drivers must slow down and yield the right-of-way to pedestrians and vehicles that are ...

Stop Sign

Stop signs are designed to let drivers know that they must come to a complete stop. Discover the stop sign definition, shape, dimensions, and more.

Crossbuck Sign

A crossbuck sign is posted at railroad crossings, indicating that drivers should yield to trains. Learn more about the definition, location, and more.

Narrow Bridge Sign

The narrow bridge sign warns drivers that they are approaching a bridge that’s more narrow than the current road. Learn more about the definition, location, and more.

Divided Highway Sign

Divided highway signs warn drivers of a divided highway ahead. Learn more about the definition, shape, location, and more.

Road Narrows Sign

The road narrows sign is posted as a warning that the road ahead will be more narrow than the current road. Learn more about the definition, location, and more.

Slow Moving Vehicle Sign

Slow moving vehicle signs warn drivers of vehicles they are approaching that can’t go more than 25mph. Learn more about the definition, location, and more.

Slippery Road Sign

The slippery road sign warns drivers they are on a road that’s prone to water and ice which cause a slippery condition. Learn more about the definition, location, and more.