Title 42The Public Health and WelfareRelease 119-73not60

§16131 Definitions

Title 42 › Chapter 149— NATIONAL ENERGY POLICY AND PROGRAMS › Subchapter VII— VEHICLES AND FUELS › Part F— Diesel Emissions Reduction › § 16131

Last updated Apr 5, 2026|Official source

Summary

Defines the main words used so people know who or what is covered. Administrator means the head of the Environmental Protection Agency. Certified engine configuration means a new, rebuilt, or remanufactured engine setup that the EPA or the California Air Resources Board has approved, or one rebuilt to meet tougher emissions rules; if it replaces an engine, the old engine must be removed and sent back to the supplier to be upgraded or scrapped. Eligible entity means a regional, State, local, or tribal agency or port authority in charge of transportation or air quality; a nonprofit that works on pollution reduction or promotes transportation or air quality; or a private owner of diesel vehicles who operates under a contract, license, or lease with a federal agency or one of those agencies and who follows EPA rules about vehicle use and required notices or approvals. Emerging technology means a new pollution-control idea that is not yet verified but has an approvable application and test plan filed with the EPA or California Air Resources Board. Fleet means one or more diesel vehicles or diesel engines, mobile or fixed. Heavy-duty truck means whatever “heavy duty vehicle” means under federal rules. Medium-duty truck is defined later by the EPA by regulation. State includes the States, the District of Columbia, Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands. Verified technology means a pollution-control device, such as a retrofit or auxiliary power unit, that the EPA or the California Air Resources Board has checked and approved.

Full Legal Text

Title 42, §16131

The Public Health and Welfare — Source: USLM XML via OLRC

In this part:
(1)The term “Administrator” means the Administrator of the Environmental Protection Agency.
(2)The term “certified engine configuration” means a new, rebuilt, or remanufactured engine configuration—
(A)that has been certified or verified by—
(i)the Administrator; or
(ii)the California Air Resources Board;
(B)that meets or is rebuilt or remanufactured to a more stringent set of engine emission standards, as determined by the Administrator; and
(C)in the case of a certified engine configuration involving the replacement of an existing engine or vehicle, an engine configuration that replaced an engine that was—
(i)removed from the vehicle; and
(ii)returned to the supplier for remanufacturing to a more stringent set of engine emissions standards or for scrappage.
(3)The term “eligible entity” means—
(A)a regional, State, local, or tribal agency or port authority with jurisdiction over transportation or air quality;
(B)a nonprofit organization or institution that—
(i)represents or provides pollution reduction or educational services to persons or organizations that own or operate diesel fleets; or
(ii)has, as its principal purpose, the promotion of transportation or air quality; and
(C)any private individual or entity that—
(i)is the owner of record of a diesel vehicle or fleet operated pursuant to a contract, license, or lease with a Federal department or agency or an entity described in subparagraph (A); and
(ii)meets such timely and appropriate requirements as the Administrator may establish for vehicle use and for notice to and approval by the Federal department or agency or entity described in subparagraph (A) with respect to which the owner has entered into a contract, license, or lease as described in clause (i).
(4)The term “emerging technology” means a technology that is not currently, or has not been previously, certified or verified by the Administrator or the California Air Resources Board but for which an approvable application and test plan has been submitted for verification to the Administrator or the California Air Resources Board.
(5)The term “fleet” means one or more diesel vehicles or mobile or stationary diesel engines.
(6)The term “heavy-duty truck” has the meaning given the term “heavy duty vehicle” in section 7521 of this title.
(7)The term “medium-duty truck” has such meaning as shall be determined by the Administrator, by regulation.
(8)The term “State” means the several States, the District of Columbia, the Commonwealth of Puerto Rico, Guam, the United States Virgin Islands, American Samoa, and the Commonwealth of the Northern Mariana Islands.
(9)The term “verified technology” means a pollution control technology, including a retrofit technology or auxiliary power unit, that has been verified by—
(A)the Administrator; or
(B)the California Air Resources Board.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Amendments

2011—Par. (3)(C). Pub. L. 111–364, § 2(a)(1), added subpar. (C). Par. (4). Pub. L. 111–364, § 2(a)(2), inserted “currently, or has not been previously,” after “that is not”. Par. (8). Pub. L. 111–364, § 2(a)(6), added par. (8). Former par. (8) redesignated (9). Par. (9). Pub. L. 111–364, § 2(a)(5), struck out “, advanced truckstop electrification system,” after “retrofit technology” in introductory provisions. Pub. L. 111–364, § 2(a)(4), redesignated par. (8) as (9). Former par. (9) struck out. Pub. L. 111–364, § 2(a)(3), struck out par. (9) which defined “State” to include the District of Columbia. 2008—Par. (9). Pub. L. 110–255 added par. (9).

Statutory Notes and Related Subsidiaries

Effective Date

of 2011 Amendment Pub. L. 111–364, § 4, Jan. 4, 2011, 124 Stat. 4061, provided that: “(a) General Rule.—Except as provided in subsection (b), the

Amendments

made by section 2 [amending this section and sections 16132 to 16134 and 16137 of this title] shall take effect on October 1, 2011. “(b) Exception.—The

Amendments

made by subsections (a)(4) and (6) and (c)(4) of section 2 [amending this section and section 16133 of this title] shall take effect on the date of enactment of this Act [Jan. 4, 2011].”

Reference

Citations & Metadata

Citation

42 U.S.C. § 16131

Title 42The Public Health and Welfare

Last Updated

Apr 5, 2026

Release point: 119-73not60