Manual on Uniform Traffic Control Devices*Cool Site* - The standard for signs, signals, and pavement markings in the United States. Includes HTML and .pdf versions.
Traffic Sign and Signals*Cool Site* - International overview, emphasizing the Vienna Convention of 1968 standardizing traffic control. Thorough links section.
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 into art ("Read Between the Signs" and "Signs and Flowers").
Men at Work - Dozens of variations on the "Men at Work" theme.
MiniTraff - Unofficial traffic signal simulator available for download. Uses Java.
Motorway Signs - Photos of approach, advance direction, exit, reassurance, and overhead signs on motorways in various countries.
MUTCD History - Page by the Texas Transportation Institute illustrating the changes between each edition of the U.S. Manual on Uniform Traffic Control Devices. Also includes related articles.
My Crazy Hobby - Photograph inventory of a large personal collection.
National Committee on Uniform Traffic Control Devices - U.S. organization which helps develop standards which are often applied to the Manual on Uniform Traffic Control Devices. History, member information, and meeting information.
Signs on Nova Scotia Roads and Highways - Describes the unique attraction signage on freeways of this Canadian province. Official page of the provincial Department of Transportation and Public Works.
Signspotters - Includes photo collection of examples in Australia.
