RT-1. Provide for the ever-increasing outdoor recreation needs of an expanding urban population to promote the preservation of, public access to, travel within, and enjoyment and appreciation of the open-air, outdoor areas and historic resources of the Black Canyon corridor. Segments of the trail are established primarily near urban areas, secondarily within scenic areas, and along historic travel routes of the area. A motorized route will generally parallel the trail to improve administrative access needs and public long distance travel using vehicles.