Roadways can actually attract deer. That is why spotlight deer surveys along roads often overestimate numbers. The right of ways are often mowed to increase visibilityand make it prettierfor motorists. Deer are early successional species that prefer to feed on weeds and "fresh" grass. Mowing creates the disturbance to the plant communities that stimulate weed and grass growth. Like it was stated previously, we are actually creating habitat "food" for deer on roads thereby increasing our own chances of a collision.