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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 1042
Subpart F - Subpart F—Test Procedures
§ 1042.501 - How do I run a valid emission test?
§ 1042.505 - Testing engines using discrete-mode or ramped-modal duty cycles.
§ 1042.515 - Test procedures related to not-to-exceed standards.
§ 1042.520 - What testing must I perform to establish deterioration factors?
§ 1042.525 - How do I adjust emission levels to account for infrequently regenerating aftertreatment devices?
authority:
42 U.S.C. 7401-7671q.
source:
73 FR 37243, June 30, 2008, unless otherwise noted.
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