Traffix
Traffic simulation software demo.

Me and the Roads
Java game involving road-building.

AARoads
Private page covering numerous aspects.

Off Road Routes
Downloadable tracks and lanes suitable for 4x4 vehicles documented with photographs, GPS, descriptions and distances, graded by difficulty.

Description of the World's Road Numbering Systems
Many details from nearly every country.

World Highways Magazine
News on designing, construction, financing, maintaining and operating major roads worldwide.

IHCC Web Library
International Highway Construction Corporation, supporters of a highway system connecting most of the world which would include a Bering Strait bridge and Japan-South Korea tunnel.

Slashdot: Supercomputers Used to Study Urban Traffic
A link to an article and discussion about the science of traffic.

Trafficware Software
Download demo software for simulating intersections, traffic signals, and traffic flow.

Should Cities Convert One-Way Streets to Two-Way?
Commentary by Reason Public Policy Institute. Includes some history of one-way street creation.

Milebymile
Route logs composed by tourist businesses located along the routes.