Hidden cameras let you spy on animals as they go about their business.
Dr. Tony Clevenger of the Western Transportation Institute at Montana State University has research video cameras that record the passage of a variety of large mammals using Banff National Park’s wildlife crossing structures under the TransCanada Highway. To view video clips of grizzly bear, black bear, mountain lion, elk and deer go to this website:
http://www.coe.montana.edu/wti/road_ecology/whats%20new.php
The Washington Department of Transportation has future plans to build wildlife under passes on I-90 in the North Cascades area.