emissions from either of the following new nonroad engines or
nonroad vehicles subject to regulation under this Act- " ( A )
New engines which are used in construction equipment or vehicles
or used in farm equipment or vehicles and which are smaller
than 175 horsepower. "(B) New locomotives or new engines
used in locomotives.
Subsection (b) shall not apply for purposes of this paragraph.
"(2) Other nonroad engines or vehicles.-(A) In the case of any
nonroad vehicles or engines other than those referred to in
subparagraph (A) or (B) of paragraph (1), the Administrator
shall, after notice and opportunity for public hearing, authorize
California to adopt and enforce standards and other requirements
relating to the control of emissions from such vehicles or
engines if California determines that California standards will
be, in the aggregate, at least as protective of public health and
welfare as applicable Federal standards. No such authorization
shall be granted if the Administrator finds that-
"(i) the determination of California is arbitrary and
"(ii) California does not need such California standards to
meet compelling and extraordinary conditions, or
"(iii) California standards and accompanying enforcement
procedures are not consistent with this section.
"(B) Any State other than California which has plan provisions
approved under part D of title I may adopt and enforce, after
notice to the Administrator, for any period, standards relating
to control of emissions from nonroad vehicles or engines (other
than those referred to in subparagraph (A) or (B) of paragraph
(1)) and take such other actions as are referred to in
subparagraph (A) of this paragraph respecting such vehicles or
"(i) such standards and implementation and enforcement are
identical, for the period concerned, to the California
standards authorized by the Administrator under subparagraph
"(ii) California and such State adopt such standards at
least 2 years before commencement of the period for which the
standards take effect.
The Administrator shall issue regulations to implement this
SEC. 223. NEW TITLE II DEFINITIONS.
(a) Additional Definitions.-Section 216 of the Clean Air Act (42
U.S.C. 7550) is amended by adding the following at the end thereof:
"(7) Vehicle curb weight, gross vehicle weight rating,
light-duty truck, light-duty vehicle, and loaded vehicle weight.-
The terms `vehicle curb weight', `gross vehicle weight rating'
(GVWR), `light-duty truck' (LDT), light-duty vehicle, and `loaded
vehicle weight' (LVW) have the meaning provided in regulations
promulgated by the Administrator and in effect as of the
enactment of the Clean Air Act Amendments of 1990. The
abbreviations in parentheses corresponding to any term referred
to in this paragraph shall have the same meaning as the
"(8) Test weight.-The term `test weight' and the abbreviation
`tw' mean the vehicle curb weight added to the gross vehicle
weight rating (gvwr) and divided by 2.