Matthew Spears has worked for the Environmental Protection Agency (EPA) since 1998. Over the past 15 years his work at…
Presentation to be confirmed: Heavy-duty NOx: U.S. EPA Update and Next Steps
- In response to a number of petitions, last December the U.S. EPA signalled that additional heavy-duty NOx reductions could be achieved through a comprehensive overhaul of its existing HD NOx program.
- EPA identified a number of decades-old program elements that are ripe for revisiting—such as its certification standards & test cycles; its in-use standards; and its regulatory useful life for HD engines.
- The California Air Resources Board is also moving ahead to tighten HD NOx standards; potentially on a timeline ahead of the federal agency.