Wildlife deaths from vehicle collisions are on the rise in Yellowstone and Grand Teton National Parks. That’s according to records obtained by the group Public Employees for Environmental Responsibility. KUWR in Laramie spoke with the group’s executive director, Jeff Ruch, who told them one of the reasons, at least in Yellowstone, could be road improvements. Ruch says “Yellowstone designs its road projects for basically commuting into the park. They’ve invested a lot of money in recent years into making roads wider and straighter.” Ruch explains that enables people to drive faster, which can lead to more vehicle-wildlife collisions. He notes that Grand Teton National Park has taken various measures to get drivers to slow down, including reducing nighttime speed limits. He says all parks should consider similar measures.