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  2. Regulations for Emissions from Vehicles and Engines

Proposed Rule and Related Materials for Control of Emissions of Air Pollution From Nonroad Diesel Engines

Related Topics
  • Final Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines
Referenced Tier Levels
  • Tier 2
  • Tier 3

The following is information for the proposed rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines.

This advance notice of proposed rule reviews the need and potential for additional reductions in emissions of oxides of nitrogen, hydrocarbons, and particulate matter from mobile source heavy-duty engines, announces EPA’s intent to establish new emission controls for highway heavy-duty engines, and also describes EPA’s plans to work cooperatively with engine and equipment manufacturers to consider additional reductions from nonroad (off-highway) heavy-duty engines.

  • Proposed Rule (pdf) (676 KB, published September 1997)

Related Materials

  • Advance Notice of Proposed Rulemaking (pdf) (358 KB, published August 31, 1995)
  • Supplemental Advance Notice of Proposed Rulemaking (pdf) (180 KB, published January 2, 1997)

Regulations for Emissions from Vehicles and Engines

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Contact Us About Regulations for Emissions from Vehicles and Engines
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Last updated on May 15, 2025
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