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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 86
Subpart N - Subpart N—Exhaust Test Procedures for Heavy-duty Engines
§ 86.1301 - Scope; applicability.
§ 86.1305 - Introduction; structure of subpart.
§ 86.1333 - Transient test cycle generation.
§ 86.1360 - Supplemental emission test; test cycle and procedures.
§ 86.1362 - Steady-state testing with a ramped-modal cycle.
§ 86.1370 - Not-To-Exceed test procedures.
§ 86.1372 - Measuring smoke emissions within the NTE zone.
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