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

Most Italian road signs.

Three pages of Japanese signs with English descriptions.

A 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.

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.

Photograph inventory of a large personal collection.