The data in this video may be soft, but there certainly is evidence that some drivers purposely swerve out of their lane in order to kill animals.
When I lived in Texas and drove to Oklahoma for rockhounding trips, I remember swerving on rural roads to avoid tarantulas. I guess I can understand locals wanting to eliminate them. But turtles??? Can someone explain?
Addendum: Larry has reminded me about post turtles. Question for readers in Texas - are they real, or apocryphal?