Signs and Signals
Arts and Environment Initiative
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 …
Bartolomeo: Traffic Signs of the World
Examples of child crossing, construction, and falling rock signs worldwide.
Evaluation of Traffic Signal Displays for Protected/Permitted Left-Turn Control
Research project studying controls for this movement, addressing such principles as the "left-turn trap". Includes animated graphic examples.
German Traffic Signs, Signals, and Markings
Illustrations and detailed commentary.
Interstate Highway Control Cities
Covers all 2-digit and major 3-digit U.S. Interstates and gives some explanation as to their selection. Transcription of an AASHTO document.
Italian & International Road Signs
Images of Italian signs with english descriptions.
Manual of Traffic Signs
A comprehensive listing of those most commonly used in the United States.
Manual on Uniform Traffic Control Devices
The standard for signs, signals, and pavement markings in the United States. Includes HTML and .pdf versions.
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