Manual of Traffic Signs - a comprehensive listing of the most commonly used traffic signs in the United States

Highway Route Markers (James Lin) - Contains hundreds of highway signs and markers from the United States, Canada, and other countries.

SignMaker - Make your own freeway sign - This fun Java applet helps you design a freeway sign.

H.B. Elkins' Web Site - Pictures of road signs in the appalachian region.

Highway Sign Icons For Your Windows Desktop - all US state routes and federal highways

Highway Sign of the Week - graphics of some strange highway signs, mostly special route markers

Road Signs in Ontario - Photos and information on traffic signs in the region.

World Highways humour (Skid Marks) - Amusing photos of highway signs.

NS TPW - Highway Signs - Describes Nova Scotia, Canada's unique attraction signage on freeways.

Manual on Uniform Traffic Control Devices - the standard for highway signs and control devices in the USA. First draft of 2001 edition up for viewing.

Sign Language - Many humorous road signs.

1946 Pennsylvania Road Signs - Photos of highway signage in the state.

Missing and Hidden Street Name Signs in Arlington, Massachusetts - Shows how Arlington can't sign streets.

Mr Yamamoto's Higway Sign Makover Boo-teek - What state highway signs could look like. Originally part of CC Slater's site.