[Code of Federal Regulations] [Title 36, Volume 1] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR4.31] [Page 39] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER I--NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR PART 4--VEHICLES AND TRAFFIC SAFETY--Table of Contents Sec. 4.31 Hitchhiking. Hitchhiking or soliciting transportation is prohibited except in designated areas and under conditions established by the superintendent.