When driving in Utah on 191 from Flaming Gorge NRA to Dinosaur NM, we encountered a lot of trucks with deer or cow guards, very robust brush guards on the front of the truck. No way would you survive a head on with that. I realize that commerce has a tight schedule but no one's life is worth some stockholder's profit. We saw them crossing lines, cutting corners, speeding. And, most of the west is open range, so you always need to watch for cattle. I guess the companies feel that they can just buy the cows they kill.
Although we drive close to the speed limit or slower, we don't know the roads so err on the side of caution. We always pull over when we can if it is safe to do so.
Happy trails!