[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: 23CFR657.3] [Page 248-249] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 657--CERTIFICATION OF SIZE AND WEIGHT ENFORCEMENT--Table of Contents Sec. 657.3 Definition. Enforcing or enforcement means all actions by the State to obtain compliance with size and weight requirements by all vehicles operating on the FA [[Page 249]] Interstate, primary, urban, and secondary systems.