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State and Local Transportation Resources

  • Fuels

    Motor vehicle fuels policy and requirements.

  • Inspection and maintenance

    Motor vehicle inspection and maintenance of emission control equipment.

  • SIPs

    State implementation plans for meeting federal air quality standards.

  • Transit/Bikes

    Clean transportation alternatives.

Transportation Conformity

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  • Current law, regulations and guidance
  • Policy and technical guidance
  • Project-level conformity
  • General information, contacts and training
  • Adequacy review of SIP submissions

Vehicle Emissions Inspection & Maintenance

Vehicle Inspection & Maintenance
  • General information and regulations
  • Policy and technical guidance
  • Information for state and local I/M agencies
  • Information for motorists

State Implementation Plans

State Implementation Plans
  • Background on CAA mobile source programs for Ozone
  • Policy and technical guidance
  • Gasoline standards - state fuel programs
  • Port emissions inventory guidance

Greenhouse Gas (GHG) Planning

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  • Estimating emission reductions from travel efficiency strategies
  • Estimating greenhouse gas emissions

Models & Calculators

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  • EPA’s MOVES model
  • Calculator tools
Related Information
  • By programs:
    • California waivers & authorizations
    • Green Vehicle Guide
    • Diesel Emission Reduction Act Funding
    • Ports Initiative
    • SmartWay
 
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 9, 2025
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