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Manual on Uniform Traffic Control Devices - http://mutcd.fhwa.dot.gov/
The standard for signs, signals, and pavement markings in the United States. Includes HTML and .pdf versions. |
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Diamond Signs - http://www-cs-faculty.stanford.edu/~knuth/diamondsigns/diam.html
Photograph collection of warning signs. |
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Manual of Traffic Signs - http://www.trafficsign.us/
A listing of those most commonly used in the United States. |
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The Highway Code - http://www.direct.gov.uk/en/TravelAndTransport/Highwaycode/
Official document of the United Kingdom. Includes illustrations and usage of signs and signals. |
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The National Campaign to Stop Red Light Running - http://www.stopredlightrunning.com/
Advocacy group based in Washington, D.C., U.S. News, events, articles, and links. |