# Amendments to the Test Procedures for Heavy-Duty Engines, and Light-Duty Vehicles and Trucks and Amendments to the Emission Standard Provisions for Gaseous Fueled Vehicles and Engines
> **Rule** · Final rule. · Published 2000-02-18 · 65 FR 8275
## Document
- **Document number:** 00-1091
- **Category:** air-emissions
- **Federal Register citation:** 65 FR 8275
- **CFR reference:** 40 CFR 86
- **Publication date:** 2000-02-18
- **EPA docket:** FRL-6523-7
## Abstract

On September 5, 1997 EPA promulgated a direct final rulemaking that amended several sections of the heavy-duty engine test procedure regulations. EPA also published a notice of proposed rulemaking proposing the same amendments. EPA noted that if adverse comments were received regarding any provisions, EPA would withdraw those provisions and comments would be addressed in a later final rule based on the proposed rule. Due to adverse comments that were received regarding three provisions, EPA issued a final rule on May 4, 1998 withdrawing those three provisions and indicated that they would be addressed in a separate action. Today, EPA is finalizing those three provisions with amendments, after taking into consideration comments received during the comment period and further discussions with heavy-duty engine and light-duty vehicle manufacturers.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/02/18/00-1091/amendments-to-the-test-procedures-for-heavy-duty-engines-and-light-duty-vehicles-and-trucks-and)
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