Part of the Center for Economic and Environmental Development at Allegheny College in Pennsylvania. Page shows recent projects including two involving the sculpting of road signs into art ("Read Between the Signs" and "Signs and Flowers").

Extensive photo collection of australian signs.

Examples of child crossing, construction, and falling rock signs worldwide.

Some images of Chinese signs, but the text is in Chinese.

Humorous examples.

Photograph collection of warning signs.

Good collection of Dutch Traffic signs.

Research project studying controls for this movement, addressing such principles as the "left-turn trap". Includes animated graphic examples.

Large collection of French road signs.

Illustrations and detailed commentary.

Many standard and unusual examples.

Contains hundreds of images from around the world.

In Icelandic but some interesting sign variations.

Covers all 2-digit and major 3-digit U.S. Interstates and gives some explanation as to their selection. Transcription of an AASHTO document.

Images of Italian signs with english descriptions.

Most Italian road signs.

Three pages of Japanese signs with English descriptions.

A comprehensive listing of those most commonly used in the United States.

The standard for signs, signals, and pavement markings in the United States. Includes HTML and .pdf versions.

Dozens of variations on the "Men at Work" theme.

Unofficial traffic signal simulator available for download. Uses Java.

Photos of approach, advance direction, exit, reassurance, and overhead signs on motorways in various countries.

Photograph inventory of a large personal collection.

Images of common road signs.

Photos of signs from the early 20th century.

A private citizen's presentation on having this feature adopted.

Contains a list of all cities that use ramp metering systems.

Various graphic files of U.S. examples, some fictional.

Website that accepts submissions of photographs of sign assemblies whose numbers can be arranged to form a mathematical operation.

Images and descriptions of most Italian signs.

North Korean road signs.

Hundreds of funny road signs by category

Basic European signage.

Generates graphic route markers.

Many humorous road signs.

Tourist attraction composed of donated road signs. Site includes visiting information.

Photos of an extensive collection of signals and signs, many vintage, plus a gallery of photos covering many geographic areas.

Java applet letting users create highway sign graphics.

Describes the unique attraction signage on freeways of this Canadian province. Official page of the provincial Department of Transportation and Public Works.

What highway signs could look like.

Official document of the United Kingdom. Includes illustrations and usage of signs and signals.

Advocacy group based in Washington, D.C., U.S. Site includes news, events, articles, and links.

Photos of and commentary on current and old signs and signals throughout the U.S. and Canada as well as welcome signs.

The standard for signs, signals, and pavement markings in the United Kingdom. Includes graphics.

Malaysia signs and signals.

Texas Transportation Institute page. Includes historical and research documents.

International overview, emphasizing the Vienna Convention of 1968 standardizing traffic control. Thorough links section.

Images of most Lebanese signs.

A few good pictures of Korean signs and signals.

Gives the background on this feature in the Yukon Territory of Canada consisting of thousands of donated road signs.

Photograph collection. Also covers the Central and Capital/Adirondack regions of the state.

Entries into a contest dealing with humorous alterations of photos. Also provides links to earlier Scary Signs galleries.