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  2. State and Local Transportation

In-Use Measures: Heavy-Duty Retrofits Related Links for State and Local Transportation Resources

This page provides links to EPA and non-EPA resources that provide additional information on in-use measures to reduce emissions. Links go directly to specific websites or documents that address heavy-duty retrofits.

  • U.S. Environmental Protection Agency Resources
  • Other Federal Departments & Agencies
  • State, Local, and Regional Programs
  • Non-Governmental Organizations

U.S. Environmental Protection Agency Resources

  • Diesel Emissions Reduction Act (DERA) Funding
    The EPA DERA Program funds grants and rebates that protect human health and improve air quality by reducing harmful emissions from diesel engines.
  • Nonroad Diesel Equipment
    EPA's site for all aspects of nonroad diesels, including basic information, regulations, and compliance assistance.
  • SmartWay Transport Partnership
    Participate in this program to provide incentives that will encourage retailers, and the freight sector (truck and rail) to reduce emissions from the transport of ground freight.

Other Federal Departments & Agencies

  • Clean Air and Transportation: Diesel Engine Retrofit
    A Federal Highway Administration white paper designed to raise awareness about diesel engine retrofit programs.

State, Local, and Regional Programs

  • Assessment of Potential Strategies to Reduce Emissions from Diesel Engines in Washington State
    A report that identifies technologies and actions that can reduce particulate matter emissions in existing diesel engines.
  • California's Diesel Risk Reduction Plan
    The California Air Resources Board developed a risk management program, which provides useful information and measures to reduce diesel emissions.
  • Oregon Clean Diesel Initiative
    A state-wide program working to promote voluntary retrofit of diesel engines, in both on- and off-highway situations.

Non-Governmental Organizations

  • Dieselnet
    An online information service on clean diesel engines and diesel emissions.
  • Environmental Defense - Cleaner Diesel Handbook (PDF) (12pp, 473K)
    Environmental Defense is a nonprofit organization that published a handbook designed to cut emissions by diesel engines, especially nonroad.
  • NESCAUM's Status Report on Clean Mobile Source Diesel Initiatives (PDF) (43pp, 2.9M)
    Provides background and technical information necessary for effective decision-making on local diesel programs.

State and Local Transportation

  • Transportation & Conformity
  • Vehicle Emissions Inspection & Maintenance (I/M)
  • Greenhouse Gas Planning
  • State Implementation Plans (SIPs)
  • Modeling & Calculator Tools
Contact Us About State and Local Transportation
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 11, 2025
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