[Code of Federal Regulations] [Title 40, Volume 15] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR85.1401] [Page 520] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 85--CONTROL OF AIR POLLUTION FROM MOBILE SOURCES--Table of Contents Subpart O--Urban Bus Rebuild Requirements Sec. 85.1401 General applicability. Source: 58 FR 21386, Apr. 21, 1993, unless otherwise noted. The requirements of this subpart shall be applicable to 1993 and earlier model year urban buses operating in consolidated metropolitan statistical areas and metropolitan statistical areas with a 1980 population of 750,000 or more that have their engines rebuilt or replaced after January 1, 1995.