Highway planners rarely design for the animals that already crossed the land before the road existed. Deer, elk, and smaller mammals keep to routes worn in by generations of use, and a new highway cut across such a route becomes a place where collisions cluster year after year. The fix that has proven effective is not more fencing along the whole road but a single overpass or underpass placed exactly on the old route, planted to resemble the surrounding terrain. Animals begin using them within a season, and the collision counts at those specific points drop sharply within a few years.
The main idea of the passage is that
Pick an answer
Correct!
Not quite. The correct answer is highlighted.
Correct answer to question 69 (Paragraph Comprehension): a crossing placed on an animal's existing route reduces collisions
Method
The passage explains that the effective fix is a crossing placed exactly on the old route, and that collisions drop sharply once animals begin using it, which the second choice states.
Updated: November 2026
Raise your AFQT scoreFree for iPhone and Android
