On January 6, 2020, EPA Administrator, Andrew Wheeler, signed an Advance Notice of Proposed Rule (ANPR) soliciting pre-proposal comments on a rulemaking effort known as the Cleaner Trucks Initiative (CTI).

This ANPR describes EPA’s plans for a new rulemaking that would establish new emission standards for oxides of nitrogen (NOx) and other pollutants for highway heavy-duty engines. It also describes opportunities to streamline and improve certification procedures to reduce costs for engine manufacturers.

EPA is seeking input on this effort from the public, including all interested stakeholders.

Read more information on the ANPR at this EPA website.