No person shall drive a motor vehicle within any County Park or Recreation area, or
the San Francisco Fish and Game Refuge, at a speed greater than is reasonable or prudent,
having due regard for traffic and the surface and width of the road, and in no event
at a speed which endangers the safety of person, property, or wildlife, provided,
however, that in no event shall a motor vehicle be driven at a speed greater than
the posted speed limit for that area as designated by the Parks and Recreation Commission.