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Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments
For a list of Heavy-Duty Highway regulations and standards, go to the Regulations and Standards page.
NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
- Final Technical Amendments – Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments (published July 13, 2005)
- Fact Sheet: Regulatory Announcement: Changed Test Procedures for Nonroad Engines and Heavy-Duty Highway Engines (also available as a PDF, 4 pp, 134K, EPA420-F-05-036, July 2005)
- Final Rule (published July 13, 2005):
- Pages 40419-40468 (which includes: Preamble, 40 CFR Parts 85, 86, 89, 90, 91, 92, 94, 1039, 1048) | PDF Version(50 pp, 949K)
- Pages 40469-40518 (which includes: 40 CFR Parts 1048, 1051, 1068, 1065) | PDF Version (50 pp, 938K)
- Pages 40519-40568 (which includes: 40 CFR Part 1065) | PDF Version(50 pp, 6.1MB)
- Pages 40569-40614 (which includes: 40 CFR Part 1065) | PDF Version(50 pp, 1.81MB)
- Technical Support Document and Summary & Analysis of Comments (PDF) (115 pp, 1.7MB, EPA420-R-05-008, June 2005)
- Proposed Technical Amendments - Test Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments(published September 10, 2004)
- Fact Sheet: Proposed Changes to Test Procedures for Nonroad Engines and Heavy-duty Highway Engines (PDF) (3 pp, 104K, EPA420-F-04-046, August 2004)
- Federal Register Notice: Test Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments (PDF) (171 pp, 1.8MB)
- Part A: Pages 54845-54894 (also available as a PDF file, 50 pp, 292K)
- Part B: Pages 54895-54944 (also available as a PDF file, 50 pp, 460K)
- Part C: Pages 54945-54994 (also available as a PDF file, 50 pp, 772K)
- Part D: Pages 54995-55015 (also available as a PDF file, 21 pp, 348K)
- Technical Support Document: Test Procedures for Highway and Nonroad Engines and Omnibus Technical Amendments (PDF) (70 pp, 808K, EPA420-D-04-004, August 2004)