NOTIFICATION
Addendum
The following communication, dated 18 March 2024, is being circulated at the request
of the delegation of the United States of America.
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Title: Improvements for Heavy-Duty Engine and Vehicle Fuel Efficiency
Test Procedures, and Other Technical Amendments
Description: The
National Highway Traffic Safety Administration (NHTSA) is finalizing minor
technical amendments to the test procedures for heavy-duty engines and vehicles
to improve accuracy and reduce testing burden. These amendments affect the
certification procedures for fuel efficiency standards and related
requirements. These amendments increase compliance flexibility, harmonize with
other requirements, add clarity, correct errors, and streamline the
regulations. Given the nature of these changes, NHTSA does not expect either
significant environmental impacts or significant economic impacts for any sector.
This
final rule is effective on 14 May 2024.
Title 49 Code of Federal
Regulations (CFR) Part 535
This
final rule and the proposed rule notified as G/TBT/N/USA/1917 is identified by Docket Number NHTSA-2020-0079. The Docket
Folder is available on Regulations.gov at https://www.regulations.gov/docket/NHTSA-2020-0079/document and provides access to primary and supporting documents as
well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
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[1] This information can be provided by including a website address, a
pdf attachment, or other information on where the text of the final/modified
measure and/or interpretive guidance can be obtained.