Fences and land bridges apparently. Seems like it doesn't get them all, but keeps the bigger ones out most of the time. https://www.quora.com/Are-collisions-wi

Fences and land bridges apparently. Seems like it doesn't get them all, but keeps the bigger ones out most of the time. https://www.quora.com/Are-collisions-with-animals-a-major-problem-on-the-German-Autobahn https://www.quora.com/Are-collisions-with-animals-a-major-pr... I've never seen anything even remotely like that on a US highway, and I've driven around the US a lot.