The purpose of this part is to furnish guidelines and prescribe policies regarding landscaping and scenic enhancement programs, safety rest areas, and scenic overlooks under 23 U.S.C. 319; information centers and systems under 23 U.S.C. 131(i); and vending machines in safety rest areas under 23 U.S.C. 111. [48 FR 38610, Aug. 25, 1983]