Title 42, The Public Health and WelfareRelease 119-110

§16102 Diesel Fueled Vehicles

Title 42 › CHAPTER 149 — NATIONAL ENERGY POLICY AND PROGRAMS › SUBCHAPTER VII — VEHICLES AND FUELS › Part D — Miscellaneous › § 16102

Last updated Sep 22, 2026|Official source

Summary

The Secretary must speed up work to improve how diesel engines burn fuel and how their pollution controls clean exhaust. "Tier 2 emission standards" means the EPA standards issued on February 10, 2000 that apply to passenger cars, light trucks, and larger passenger vehicles made after the 2003 model year under sections 7521 and 7545. By 2010 the Secretary must develop diesel technology that meets Tier 2 and the 2007 heavy-duty standards in effect on August 8, 2005, and must work on next‑generation low‑emission, high‑efficiency diesel engines, including homogeneous charge compression ignition technology.

Full Legal Text

Title 42, §16102

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

(a)Definition of tier 2 emission standards

In this section, the term “tier 2 emission standards” means the motor vehicle emission standards that apply to passenger cars, light trucks, and larger passenger vehicles manufactured after the 2003 model year, as issued on February 10, 2000, by the Administrator of the Environmental Protection Agency under section 7521 and 7545 of this title.

(b)Diesel combustion and after-treatment technologies

The Secretary shall accelerate efforts to improve diesel combustion and after-treatment technologies for use in diesel fueled motor vehicles.

(c)Goals

The Secretary shall carry out subsection (b) with a view toward achieving the following goals:

(1)Developing and demonstrating diesel technologies that, not later than 2010, meet the following standards:

(A)Tier 2 emission standards.

(B)The heavy-duty emissions standards of 2007 that are applicable to heavy-duty vehicles under regulations issued by the Administrator of the Environmental Protection Agency as of August 8, 2005.

(2)Developing the next generation of low-emission, high efficiency diesel engine technologies, including homogeneous charge compression ignition technology.

Reference

Citations & Metadata

Citation

42 U.S.C. § 16102

Title 42, The Public Health and Welfare

Last Updated

Sep 22, 2026

Release point: 119-110