40 CFR 80.59 - General test fleet requirements for vehicle testing.

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§ 80.59 General test fleet requirements for vehicle testing.

(a) The test fleet must consist of only 1989-91 MY vehicles which are technologically equivalent to 1990 MY vehicles, or of 1986-88 MY vehicles for which no changes to the engine or exhaust system that would significantly affect emissions have been made through the 1990 model year. To be technologically equivalent vehicles at minimum must have closed-loop systems and possess adaptive learning.

(b) No maintenance or replacement of any vehicle component is permitted except when necessary to ensure operator safety or as specifically permitted in § 80.60 and § 80.61. All vehicle maintenance procedures must be reported to the Administrator.

(c) Each vehicle in the test fleet shall have no fewer than 4,000 miles of accumulated mileage prior to being included in the test program.

[ 59 FR 7813, Feb. 16, 1994, as amended at 59 FR 36962, July 20, 1994]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code

Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 80 after this date.

  • 2017-01-26; vol. 82 # 16 - Thursday, January 26, 2017
    1. 82 FR 8499 - Delay of Effective Date for 30 Final Regulations Published by the Environmental Protection Agency Between October 28, 2016 and January 17, 2017
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; delay of effective dates.
      This regulation is effective January 26, 2017. The effective date of each regulation listed in the table below is delayed to a new effective date of March 21, 2017.
      40 CFR Parts 22, 51, 52, 61, 68, 80, 81, 124, 147, 171, 239, 259, 300, and 770