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Title 42, The Public Health and WelfareRelease 119-110

§16131 Definitions

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

Last updated Sep 22, 2026|Official source

Summary

Defines key words so people know what they mean. Administrator: the head of the Environmental Protection Agency (EPA). Certified engine configuration: a new, rebuilt, or remanufactured engine setup that the EPA or California Air Resources Board (CARB) has approved, that meets tougher emission rules set by the EPA, and, when it replaces an engine, the old engine was removed and sent back to the supplier to be remanufactured to higher standards or scrapped. Eligible entity: a regional, State, local, or tribal agency or port authority that covers transportation or air quality; a nonprofit that fights pollution or promotes transportation/air quality; or a private owner of a diesel vehicle or fleet used under a contract, license, or lease with a federal agency or one of those agencies, who follows EPA’s rules for use and approvals. Emerging technology: a tech not yet verified by EPA or CARB but that has submitted an approvable application and test plan to them. Fleet: one or more diesel vehicles or diesel engines, mobile or stationary. Heavy-duty truck: the same meaning as the federal term “heavy-duty vehicle.” Medium-duty truck: defined later by the EPA by rule. State: the 50 states, the District of Columbia, Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands. Verified technology: a pollution-control device or system, like a retrofit or an auxiliary power unit, that EPA or CARB has verified.

Full Legal Text

Title 42, §16131

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

In this part:
(1)Administrator (2) Certified engine configuration
The term “Administrator” means the Administrator of the Environmental Protection Agency.
(3)Eligible entity
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)Emerging technology
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)Fleet
The term “fleet” means one or more diesel vehicles or mobile or stationary diesel engines.
(6)Heavy-duty truck
The term “heavy-duty truck” has the meaning given the term “heavy duty vehicle” in section 7521 of this title.
(7)Medium-duty truck
The term “medium-duty truck” has such meaning as shall be determined by the Administrator, by regulation.
(8)State
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)Verified technology
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 42, The Public Health and Welfare

Last Updated

Sep 22, 2026

Release point: 119-110