Rulemaking

Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions for SCR-Equipped Diesel Engines.

🏛 Environmental Protection Agency (EPA)EPA-HQ-OAR-2026-0728

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Documents

115

Total comments

40

28 awaiting analysis

Comment status

Open

Last activity

Jul 31, 2026

In this docket

Documents

Rules, notices, and supporting material — the primary rule pinned first.

All 115 Supporting & Related Material 112 Other 1 Proposed Rule 1

Proposed Rule· Jul 14, 2026
Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions for SCR-Equipped Diesel Engines→
Open · 26 days left💬 18