[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR657.1] [Page 247] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 657--CERTIFICATION OF SIZE AND WEIGHT ENFORCEMENT--Table of Contents Sec. 657.1 Purpose. To prescribe requirements for administering a program of vehicle size and weight enforcement on Federal-aid (FA) highways, including the required annual certification by the State.