# Control of Air Pollution From New Motor Vehicles: Amendments to the Tier 2 Motor Vehicle Emission Regulations
> **Rule** · Direct final rule. · Published 2002-12-06 · Effective 2003-03-06 · 67 FR 72821
## Document
- **Document number:** 02-30843
- **Category:** other
- **Federal Register citation:** 67 FR 72821
- **CFR reference:** 40 CFR 86
- **Publication date:** 2002-12-06
- **Effective date:** 2003-03-06
- **EPA docket:** AMS-FRL-7416-7
## Abstract

EPA is taking direct final action to clarify and revise certain provisions of the Tier 2/Gasoline Sulfur regulations (hereinafter referred to as the Tier 2 rule). Today's action makes minor revisions to clarify the regulations governing compliance with the Tier 2 rule, and it modifies the Tier 2 program to provide for the certification of cleaner diesel engines than were anticipated during the interim Tier 2 program (through the 2006 model year).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/12/06/02-30843/control-of-air-pollution-from-new-motor-vehicles-amendments-to-the-tier-2-motor-vehicle-emission)
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