You may have noticed these Caltrans "Watch for Wild Animals" signs placed in the north/southbound directions of the State Route 23 between Thousand Oaks and Moorpark. According to Caltrans District 7, the signs were placed as part of a mitigation plan after a road-kill study done prior to widening of the highway.

Caltrans counted 222 road-kill in a three year study and decided to do something about it, including setting up 12 one-way wildlife gates, cleaning out culverts to allow for animals to cross underneath the highway, increasing the height of fencing to prevent animals from hopping over, and placing these signs to alert motorists.