Section 7542 of this title, referred to in subsec. (g)(5), was amended generally by Pub. L. 101–549, title II, § 211, Nov. 15, 1990, 104 Stat. 2487, and provisions formerly contained in section 7542(b) of this title are contained in section 7542(c).

Section was formerly classified to section 1857f–5 of this title.

A prior section 206 of act July 14, 1955, related to testing of motor vehicles and motor vehicle engines and was classified to section 1857f–5 of this title, prior to repeal by Pub. L. 91–604.

2015—Subsec. (a)(5). Pub. L. 114–94 added par. (5).

1990—Subsec. (a)(1). Pub. L. 101–549, § 208(b), inserted new third sentence and struck out former third sentence which read as follows: “In the case of any manufacturer of vehicles or vehicle engines whose projected sales in the United States for any model year (as determined by the Administrator) will not exceed three hundred, the regulations prescribed by the Administrator concerning testing by the manufacturer for purposes of determining compliance with regulations under section 7521 of this title for the useful life of the vehicle or engine shall not require operation of any vehicle or engine manufactured during such model year for more than five thousand miles or one hundred and sixty hours, respectively, but the Administrator shall apply such adjustment factors as he deems appropriate to assure that each such vehicle or engine will comply during its useful life (as determined under section 7521(d) of this title) with the regulations prescribed under section 7521 of this title.”

Subsec. (a)(4). Pub. L. 101–549, § 208(a), added par. (4).

Subsec. (e). Pub. L. 101–549, § 230(7), struck out “announce in the Federal Register and” after “The Administrator shall”.

Subsec. (f). Pub. L. 101–549, § 230(8), struck out par. (1) designation before “All light duty vehicles”, inserted reference to all light-duty trucks manufactured during or after model year 1995, and struck out par. (2) which required the Administrator to report to Congress by Oct. 1, 1978, on the economic impact and technological feasibility of the requirements of former par. (1).

Subsec. (h). Pub. L. 101–549, § 208(c), added subsec. (h).

1977—Subsec. (a)(1). Pub. L. 95–95, § 220, inserted provisions covering testing by small manufacturers.

Subsec. (a)(3). Pub. L. 95–95, § 214(b), added par. (3).

Subsec. (b)(2)(A)(i). Pub. L. 95–95, § 214(c)(1), (2), substituted “certificate of conformity was issued and with the requirements of section 7521(a)(4) of this title, he may suspend” for “certificate of conformity was issued, he may suspend” and “such regulations and requirements” for “such regulations”.

Subsec. (b)(2)(A)(ii). Pub. L. 95–95, § 214(c)(2), substituted “such regulations and requirements” for “such regulations”.

Subsec. (f). Pub. L. 95–95, § 213(a), added subsec. (f).

Subsec. (g). Pub. L. 95–95, § 224(e), added subsec. (g).

Subsec. (g)(3)(D). Pub. L. 95–190 inserted “shall” before “be”.

Amendment by Pub. L. 95–95 effective Aug. 7, 1977, except as otherwise expressly provided, see section 406(d) of Pub. L. 95–95, set out as a note under section 7401 of this title.

Pub. L. 91–604, § 8(b), Dec. 31, 1970, 84 Stat. 1698, provided that: “The amendments made by this section [enacting this section and section 7541 of this title] shall not apply to vehicles or engines imported into the United States before the sixtieth day after the date of enactment of this Act [Dec. 31, 1970].”

Pub. L. 114–94, div. B, title XXIV, § 24405(c), Dec. 4, 2015, 129 Stat. 1725, provided that: “Not later than 12 months after the date of enactment of this Act [Dec. 4, 2015], the Secretary of Transportation and the Administrator of the Environmental Protection Agency shall issue such regulations as may be necessary to implement the amendments made by subsections (a) [amending section 30114 of Title 49, Transportation] and (b) [amending this section], respectively.”

All rules, regulations, orders, determinations, contracts, certifications, authorizations, delegations, or other actions duly issued, made, or taken by or pursuant to act July 14, 1955, the Clean Air Act, as in effect immediately prior to the date of enactment of Pub. L. 95–95 [Aug. 7, 1977] to continue in full force and effect until modified or rescinded in accordance with act July 14, 1955, as amended by Pub. L. 95–95 [this chapter], see section 406(b) of Pub. L. 95–95, set out as an Effective Date of 1977 Amendment note under section 7401 of this title.