A Driver's Journal: Shows places along the way intended to give professional drivers field notes.
American Truck Driver: Shows scenes from across the country from a semi truck cab.
Bote's Sign Pages: Road signs from Colorado and other areas.
Chris Patriarca's Road Pictures: Contains scenes from various states, focusing on the North Carolina/South Carolina border area.
Ed Wilson's Road Trip Photos: Pictures of signs and landmarks in travels across the country.
Eric Buchanan's Highway Photo Page: Various signs.
Highway Postcard Gallery: Rotating gallery of postcards with road scenes from Mark Stauter.
Highways Across the Mid-South and West: Covers the Midwest and portions of the South.
Image Gallery: Eastern coverage, some from trips, many from Connecticut.
Interstate-Guide.com: Includes the Interstate Guide, the List of Interstate Business Routes, and the Interstate Shield Gallery. Extensive coverage.
Jeff's Streetlight and Highways Site: Includes stories about lampposts, signals, and other roadside furnishings, as well as roadways and mass transit. Primarily covers metropolitan New York City and the surrounding area.
Jimpoz.com: Includes Project 50, a goal to photograph all state welcome signs, as well as general scenes in the Roadgeek Pictures section of the Photo Album.
My Road Photos: Covers various areas, focusing on Northern Kentucky.
National Road Photography Project: Photographs and commentary on the first federally-funded highway. Includes historical references and links to similar sites.
OKRoads.com: Covers much of the country.
Road Sign Gallery: Missouri, Illinois and California.
Roads and Highways Page: Sign errors, old and unusual signs, and general scenes. Focuses on Kentucky and adjacent states.
Roadsidephotos.sabr.org: Covers various highways. Collection culled from cross-country trips.
Rte66Man's Home Page: Scenes from the southwest quarter of the country.
See the USA Through the Eyes of a Trucker: Observations.
State Line Signs: Personal collection.
States: Welcome sign collection from a 2000 trip.
The All-Nite Images: Scenes from various parts of the country, with a focus on the Northeast.
The Back Roads Gallery: A collection of photographs covering Indiana and Kentucky.
UntraveledRoad: Contains virtual trips from many areas, including along many U.S.-numbered routes, both of the roadways and the scenery around them.
Weird Signs: Gallery of images of unusual examples.
Welcome to America: Welcome signs.