[Code of Federal Regulations] [Title 36, Volume 3] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR1004.13] [Page 228] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER X--PRESIDIO TRUST PART 1004--VEHICLES AND TRAFFIC SAFETY--Table of Contents Sec. 1004.13 Obstructing traffic. The following are prohibited: (a) Stopping or parking a vehicle upon a Presidio Trust road, except as authorized by the Executive Director, or in the event of an accident or other condition beyond the control of the operator. (b) Operating a vehicle so slowly as to interfere with the normal flow of traffic.