SECTION	Title	Time
§ 34.20	§ 34.20 Applicability.	Dec. 2, 2025(ecor)
§ 34.21	§ 34.21 Standards for exhaust emissions.	Dec. 2, 2025(ecor)
§ 34.23	§ 34.23 Exhaust Emission Standards for Engines Manufactured on and after July 18, 2012.	Dec. 2, 2025(ecor)
§ 34.25	§ 34.25 Non-volatile particulate emissions standards (nvPM).	Dec. 2, 2025(ecor)
§ 34.30	§ 34.30 Applicability.	Dec. 2, 2025(ecor)
§ 34.31	§ 34.31 Standards for exhaust emissions.	Dec. 2, 2025(ecor)
§ 34.48	§ 34.48 Derivative engines for emissions certification purposes.	Dec. 2, 2025(ecor)
§ 34.60	§ 34.60 Introduction.	Dec. 2, 2025(ecor)
§§ 34.61-34.71	§§ 34.61-34.71 [Reserved]	Dec. 2, 2025(ecor)
§ 34.71	§ 34.71 Non-volatile particulate matter (nvPM) test procedures.	Dec. 2, 2025(ecor)
§ 34.73	§ 34.73 Demonstration of compliance for nvPM emissions.	Dec. 2, 2025(ecor)