[Code of Federal Regulations] [Title 40, Volume 17] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR86.884-1] [Page 63-64] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 86--CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED)--Table of Contents Subpart I--Emission Regulations for New Diesel Heavy-Duty Engines; Smoke Exhaust Test Procedure Sec. 86.884-1 General applicability. Authority: Secs. 202, 206, 207, 208, 301(a), Clean Air Act; as amended 42 U.S.C. 7521, 7524, 7541, 7542, and 7601. Source: 48 FR 52203, Nov. 16, 1983, unless otherwise noted. The provisions of this subpart are applicable to new petroleum- fueled diesel heavy-duty engines beginning with the 1984 model year, methanol-fueled diesel heavy-duty engines beginning with the 1990 model year and natural gas-fueled and liquefied petroleum gas-fueled diesel heavy-duty engines beginning with the 1997 model year. The provisions of this subpart are optional prior to the 1997 model year for natural gas- fueled [[Page 64]] and liquefied petroleum gas-fueled diesel heavy-duty engines. [59 FR 48521, Sept. 21, 1994]