[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR655.405] [Page 242] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 655--TRAFFIC OPERATIONS--Table of Contents Subpart D--Traffic Surveillance and Control Sec. 655.405 Policy. Implementation and efficient utilization of traffic surveillance and control systems are essential to optimize transporation systems efficiency, fuel conservation, safety, and environmental quality.