How to avoid cars and animals meeting head-on has taxed road and highway designers for years.
Many schemes exist but some road and overpass designs are more successful than others.
Fencing off a roadway is one method of preventing animals, usually large ones such as bears and moose, from wandering into the paths of oncoming vehicles. Another way to keep animals, and people, safe is to build an animal-friendly overpass where the surface appears as a continuation of the nearby landscape – hopefully an e