[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: 40CFR85.1701] [Page 563-564] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 85--CONTROL OF AIR POLLUTION FROM MOBILE SOURCES--Table of Contents Subpart R--Exclusion and Exemption of Motor Vehicles and Motor Vehicle Engines Sec. 85.1701 General applicability. Authority: Secs. 208(b)(1), 216(2), and 301, Clean Air Act (42 U.S.C. 7522, 7550, and 7061). Source: 39 FR 32611, Sept. 10, 1974, unless otherwise noted. (a) The provisions of this subpart regarding exemption are applicable to new and in-use motor vehicles and motor vehicle engines. (b) The provisions of this subpart regarding exclusion are applicable after the effective date of these regulations. [[Page 564]] (c) References in this subpart to engine families and emission control systems shall be deemed to apply to durability groups and test groups as applicable for manufacturers certifying new light-duty vehicles, light-duty trucks, and Otto-cycle complete heavy-duty vehicles under the provisions of 40 CFR part 86, subpart S. [39 FR 32611, Sept. 10, 1974, as amended at 64 FR 23919, May 4, 1999; 65 FR 59943, Oct. 6, 2000]