Under joint development, the recreational resource maintains use of the facility for recreational purpose, including the portion reserved for some future transportation use. It is understood by the official with jurisdiction and the state transportation agency that the use of the land may not be needed for years and until that time the land can be used for recreational or other purposes. The lined area shows a boundary of reserved land for future transportation use that an official with jurisdiction and state transporation agency would agree upon in the initial development of the recreational resource.