[Code of Federal Regulations] [Title 40, Volume 24] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR205.157] [Page 132] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 205_TRANSPORTATION EQUIP MENT NOISE EMISSION CONTROLS--Table of Contents Subpart D_Motorcycles Sec. 205.157 Requirements.