What Happens in Practice?

The two photos shows a bridge for animals to cross a busy highway in Banff National Park in Alberta, Canada. This bridge is the result of a compromise to recognize the importance both of human and animal well being. Because there were many car accidents on this highway (endangering lives), highway safety personnel suggested expanding it to two lanes on each side. The environmentalists argued that more animals would be killed with faster automobile speeds and wider highway to cross. The bridge is the result of the compromise.

As well, both sides of the highway are fenced to direct animals to this and other bridges thus preventing them from crossing the highway. There are also tunnels under the highway for animal use.

Yes, the animals do use the bridges and tunnels! Cameras monitor the animal traffic on an on-going basis.