Regulations for Emissions from Vehicles and Engines

Direct Final Rule: Nonroad Diesel Technical Amendments and Tier 3 Technical Relief Provision

Rule Summary

In this rulemaking, EPA is making certain technical corrections to the rules establishing emission standards for nonroad diesel engines. In addition, we are amending those rules to provide nonroad diesel equipment manufacturers with a production technical relief provision for Tier 3 equipment which is similar to the technical relief provision already available for Tier 4 equipment. 

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Additional Resources

Fact Sheet

Regulations for Emissions from Vehicles and Engines Home