42 U.S.C. 7521: Emission standards for new motor vehicles or new motor vehicle engines

1990

• Pub. L. 101–549, §201(1), added subpar. (A) and struck out former subpar. (A) which related to promulgation of regulations applicable to reduction of emissions from heavy-duty vehicles or engines manufactured during and after model year 1979 in the case of carbon monoxide, hydroc… · (a)
• Pub. L. 101–549, §201(1), added subpar. (B) and struck out former subpar. (B) which read as follows: "During the period of June 1 through December 31, 1978, in the case of hydrocarbons and carbon monoxide, or during the period of June 1 through December 31, 1980, in the case of o… · (a)
• Pub. L. 101–549, §201(1), added subpar. (C) and struck out former subpar. (C) which read as follows: "Action revising any standard for any period may be taken by the Administrator under subparagraph (B) only if he finds— · (a)
• Pub. L. 101–549, §201(1), added subpar. (D) and struck out former subpar. (D) which read as follows: "A report shall be made to the Congress with respect to any standard revised under subparagraph (B) which shall contain— · (a)
• Pub. L. 101–549, §201, redesignated subpar. (F) as (E), inserted heading, and struck out former subpar. (E) which read as follows: · (a), (F)
• Pub. L. 101–549, §227(b), substituted "requirements prescribed under this subchapter" for "standards prescribed under this subsection". · (a), (B)
• Pub. L. 101–549, §202, amended par. (6) generally. Prior to amendment, par. (6) read as follows: "The Administrator shall determine the feasibility and desirability of requiring new motor vehicles to utilize onboard hydrocarbon control technology which would avoid the necessity of g… · (a)
• Pub. L. 101–549, §203(c), amended subpar. (C) generally. Prior to amendment, subpar. (C) read as follows: "Effective with respect to vehicles and engines manufactured after model year 1978 (or in the case of heavy-duty vehicles or engines, such later model year as the Administrat… · (b)
• Pub. L. 101–549, §203(d), amended par. (2) generally. Prior to amendment, par. (2) read as follows: "Emission standards under paragraph (1), and measurement techniques on which such standards are based (if not promulgated prior to December 31, 1970), shall be prescribed by regulatio… · (b)
• Pub. L. 101–549, §230(4), redesignated par. (6) relating to waiver of standards for oxides of nitrogen as par. (3), struck out subpar. (A) designation before "Upon the petition", redesignated former cls. (i) to (iii) as subpars. (A) to (C), respectively, and struck out former subpar… · (b)
• Pub. L. 101–549, §230(1), in the par. (3) defining terms for purposes of this part struck out subpar. (B) which defined "light duty vehicles and engines". · (b)
• Pub. L. 101–549, §230(2), struck out par. (4) which read as follows: "On July 1 of 1971, and of each year thereafter, the Administrator shall report to the Congress with respect to the development of systems necessary to implement the emission standards established pursuant to this … · (b)
• Pub. L. 101–549, §230(3), struck out par. (5) which related to waivers for model years 1981 and 1982 of the effective date of the emissions standard required under par. (1)(A) for carbon monoxide applicable to light-duty vehicles and engines manufactured in those model years. · (b)
• Pub. L. 101–549, §230(4), redesignated par. (6) as (3). · (b)
• Pub. L. 101–549, §230(5), struck out par. (7) which read as follows: "The Congress hereby declares and establishes as a research objective, the development of propulsion systems and emission control technology to achieve standards which represent a reduction of at least 90 per centu… · (b)
• Pub. L. 101–549, §203(b)(1), substituted "provide that except where a different useful life period is specified in this subchapter" for "provide that". · (d)
• Pub. L. 101–549, §203(b)(2), (3), inserted "and light-duty trucks up to 3,750 lbs. LVW and up to 6,000 lbs. GVWR" after "engines" and substituted for semicolon at end ", except that in the case of any requirement of this section which first becomes applicable after November 15, 1990… · (d)
• Pub. L. 101–549, §207(b), added (after subsec. (m) at end) subsec. (f) relating to regulations applicable to buses for model years after 1990. · (f)
• Pub. L. 101–549, §203(a), added subsecs. (g) to (i). · (g), (h), (i)
• Pub. L. 101–549, §§204–207(a), added subsecs. (j) to (m). · (j), (k), (l), (m)

1977

• Pub. L. 95–190, §14(a)(60), restructured subsec. (a) by providing for designation of par. (1) to precede "The Administrator" in place of "Except as". · (a)
• Pub. L. 95–95, §401(d)(1), substituted "Except as otherwise provided in subsection (b) the Administrator" for "The Administrator", "cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare" for "causes or contributes to, or is likely to cause o… · (a)
• Pub. L. 95–95, §214(a), substituted "prescribed under paragraph (1) of this subsection" for "prescribed under this subsection". · (a)
• Pub. L. 95–95, §224(a), added par. (3). · (a)
• Pub. L. 95–190, §14(a)(61), (62), substituted provisions setting forth applicable periods of from June 1 through Dec. 31, 1978, June 1 through Dec. 31, 1980, and during each period of June 1 through Dec. 31 of each third year thereafter, for provisions setting forth applicable pe… · (a)
• Pub. L. 95–190, §14(a)(63), substituted "1978, in the case of hydrocarbons and carbon monoxide, and June 1, 1980, in the case of oxides of nitrogen" for "1979,". · (a)
• Pub. L. 95–95, §214(a), added par. (4). · (a)
• Pub. L. 95–95, §215, added par. (5). · (a)
• Pub. L. 95–95, §216, added par. (6). · (a)
• Pub. L. 95–95, §201(a), substituted provisions setting the standards for emissions from light-duty vehicles and engines manufactured during the model years 1977 through 1980 for provisions which had set the standards for emissions from light-duty vehicles and engines manufactured… · (b)
• Pub. L. 95–190, §14(a)(64), (65), substituted "calendar year 1976" for "model year 1976" and in cl. (i) substituted "other" for "United States". · (b)
• Pub. L. 95–95, §201(b), substituted provisions setting the standards for emissions from light-duty vehicles and engines manufactured during the model years 1977 through 1980 for provisions which had set the standards for emissions from light-duty vehicles and engines manufactured during the model y… · (b)
• Pub. L. 95–95, §217, added subpar. (C). · (b)
• Pub. L. 95–95, §224(b), added subpar. (C). · (b)
• Pub. L. 95–95, §201(c), substituted provisions setting up a procedure under which a manufacturer may apply for a waiver for model years 1981 and 1982 of the effective date of the emission standards for carbon monoxide required by par. (1)(A) for provisions which had set up a procedu… · (b)
• Pub. L. 95–95, §201(c), added par. (6). · (b)
• Pub. L. 95–95, §202(b), added par. (7). · (b)
• Pub. L. 95–95, §224(g), as amended by Pub. L. 95–190, §14(b)(5), to correct typographical error in directory language, inserted "(other than motorcycles or motorcycle engines)" after "motor vehicle or motor vehicle engine". · (d)
• Pub. L. 95–95, §224(g), added par. (3). · (d)
• Pub. L. 95–95, §401(d)(2), substituted "which in his judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger" for "which cause or contribute to, or are likely to cause or contribute to, air pollution which endangers". · (e)
• Pub. L. 95–95, §213(b), added subsec. (f). · (f)

1974

• Pub. L. 93–319, §5(a), substituted "model year 1977" for "model year 1975" in provisions requiring a reduction of at least 90 per centum from the emissions allowable under standards for model year 1970 and inserted provisions covering regulations for model years 1975 and 1976. · (b)
• Pub. L. 93–319, §5(b), substituted "model year 1978" for "model year 1976" in provisions requiring a reduction of at least 90 per centum from the average of emissions actually measured from vehicles manufactured during model year 1971 and inserted provisions covering regulations … · (b)
• Pub. L. 93–319, §5(c), (d), substituted in subpar. (A), "At any time after January 1, 1975" for "At any time after January 1, 1972", "with respect to such manufacturer for light-duty vehicles and engines manufactured in model year 1977" for "with respect to such manufacturer", "sixt… · (b)

1970

• Pub. L. 91–604 redesignated existing provisions as par. (1), substituted Administrator for Secretary as the issuing authority for standards, inserted references to the useful life of engines, and substituted the emission of any air pollutant for the emission of any kind of substance as… · (a)
• Pub. L. 91–604 added subsec. (b). Former subsec. (b) redesignated as par. (2) of subsec. (a). · (b)
• Pub. L. 91–604 added subsecs. (c) to (e). · (c), (d), (e)

1967

• Pub. L. 90–148 reenacted section without change.