# Amendments Related to: Tier 3 Motor Vehicle Emission and Fuel Standards
> **Rule** · Final rule. · Published 2016-04-22 · Effective 2016-06-21 · 81 FR 23641
## Document
- **Document number:** 2016-08912
- **Category:** other
- **Federal Register citation:** 81 FR 23641
- **CFR reference:** 40 CFR 80
- **Publication date:** 2016-04-22
- **Effective date:** 2016-06-21
- **EPA docket:** EPA-HQ-OAR-2011-0135
## Abstract

The Environmental Protection Agency (EPA) is taking final action on technical corrections and clarifications withdrawn from a previous direct final rule that amended provisions from the April 2014 Tier 3 final rulemaking and the July 2014 Quality Assurance Program final rulemaking. The regulatory changes being finalized in this final rule correct errors identified by the commenters and provide more clarity in the regulations to ensure that the regulations properly reflect the requirements established in those rules.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/04/22/2016-08912/amendments-related-to-tier-3-motor-vehicle-emission-and-fuel-standards)
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