Wildlife/Terrestrial Ecosystems Initiative:: Center for Transportation & the Environment
Critter Crossings:: U.S. Department of Transportation
Keeping It Simple: Easy Ways to Help Wildlife Along Roads:: U.S. Department of Transportation
Road Ecology:: Ecostudies Institute
Road Ecology Center:: UC Davis
Road Ecology:: Western Transportation Institute
Wildlife and Roads:: USGS, Utah State University, Transportation Research Board
Wildlife Collision Prevention Program:: British Columbia Conservation Foundation
Habitats and Highways:: Defenders of Wildlife
International Conference on Ecology & Transportation (Many excellent papers from the conference)
Keeping it Simple: Easy Ways to Help Wildlife Along Roads:: Federal Highway Administration
Second Nature: Improving Transportation Without Putting Nature Second (PDF):: Defenders of Wildlife
Getting up to Speed: A Conservationist’s Guide to Wildlife and Highways (PDF):: Defenders of Wildlife
Wildlife Habitat Connectivity Across European Highways (PDF):: U.S. Department of Transportation
Conservation Value of Wildlife Crossings: Measures of Performance and Research Directions (PDF):: Anthony P. Clevenger
A GIS-Based Identification of Potentially Significant Wildlife Habitats Associated With Roads in Vermont (PDF):: John M. Austin et al
Citizen, Science, Highways, and Wildlife: Using a Web-based GIS to Engage Citizens in Collecting Wildlife Information:: Tracy Lee, Michael S. Quinn and Danah Duke
The Ecological Effects of Roads…or The Road to Destruction:: Reed Noss, PhD
The Scan of the Wild:: Fred Bank
How Did the Grizzly Cross the Road?:: Elaine Robbins, Sierra Magazine