- AA Roads
 - Includes a nationwide sign gallery, future interstates, lost and abandoned highways, and more. - Great Streets
- Provides images and information for communities to come together and create great streets.
- U.S. Highways
- Complete list of every U.S. numbered highway, past and present, with termini and length, including U.S. Route 66 and other decommissioned federal routes.
- Highway Page
- Covers design and history of highways and signage, mainly in California.
- Pashnit
- Detailed information on motorcycle road trips throughout California, and a few in Oregon and Nevada. Includes maps and highway descriptions. Also includes travelogues.
- Interstate Highways
- Information and quirky statistics about the backbone of the American roadway system.
- I-95 Exit Information Guide
- Exit service listings from Maine to Florida. Includes food, gas, accommodation, camping, attractions.
- Most Dangerous Roads in the World, The
- Extended blog post from A Thrilling Wonder. Sometimes it's better not to go at all.
- Western Regional Superpave Center
- One of five centres established by the Federal Highway Administration to promote the implementation of Superpave technology.
- Advanced Highway Maintenance & Construction Technology Center
- Investigates the application of advanced automation and robotics to highway maintenance and construction.
- Kurumi's Humble House of Roadsdom
- Includes details of three digit interstates, field guide to freeway interchanges, and the ability to make your own freeway sign in Java.
- U.K. Motorway Archive
- Encompasses the engineering achievement involved in the conception, planning, design, and construction of over 2,000 miles of motorway built in the U.K. since 1958.
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