Transportation Related Documents for State and Local Transportation

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Accelerated Retirement of Vehicles

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Commuter Programs

  • Guidance on Emissions and Emission Reductions from Commuter Programs
    The document below provides guidance for crediting emission reductions from commuter programs when the program successfully reduces pollution from vehicle sources.

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Intelligent Transportation Systems Management

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Land Use

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  • Diesel Retrofits: Quantifying and Using Their Benefits in SIPs and Conformity - Guidance for State and Local Air and Transportation Agencies (PDF) (70 pp, 1.0 MB, EPA-420-B-14-007, February 2014 (supersedes EPA420-B-06-005, June 2006) About PDF)
    Guidance document and fact sheet for quantifying and using emission reductions from retrofitted diesel vehicles, engines, and equipment.  This guidance applies to both highway vehicles (such as buses and trucks) and nonroad vehicles, engines, and equipment (such as construction equipment). Update of June 2013:   With the release of MOVES in 2010 and the end of the grace period for regional conformity analyses (March 2, 2013), users can no longer rely on the MOBILE-based methodology in Section 2 of this document for new analyses. An update of this guidance is under development to incorporate a MOVES methodology.

Transportation Control Measures

  • EPA’s Travel Efficiency Assessment Method (TEAM): Development and Case Studies
    This presentation was given in an October 20, 2016 webinar describing EPA’s recent case studies examining the potential for travel efficiency strategies (such as transit, road and parking pricing, land use changes, bike and pedestrian infrastructure) to reduce emissions of criteria pollutants and greenhouse gases. During this webinar, EPA and its partner agencies in the Atlanta, Orlando and St. Louis case studies provided an overview of the TEAM analytical process, the travel efficiency strategies each agency considered, and their potential emission reductions.
  • Assessing Regional Emissions Reductions from Travel Efficiency: Applying the Travel Efficiency Assessment Method
    This presentation was given at the 2016 TRB Summer Conference on Transportation and Air Quality in Minneapolis, MN. It summarizes the application of the Travel Efficiency Assessment Method (TEAM) to analyze selected transportation emission reduction strategies in three case studies EPA conducted in partnership with Atlanta, Orlando, and St. Louis.
  • Applying TEAM in Regional Sketch Planning: Three Case Studies in Atlanta, Orlando, St. Louis

    This report documents 3 case studies of the application of TEAM (Travel Efficiency Assessment Method) to estimate the travel activity and emissions impacts of potential travel efficiency scenarios. EPA partnered with Metropolitan Planning Organizations in Atlanta, Orlando and St. Louis to apply the TEAM approach. TEAM uses a transportation sketch model, regionally derived travel activity data and EPA’s MOVES emissions model to estimate potential emission reductions from combinations of travel efficiency strategies. The case studies provide a useful planning resource for modeling and estimating greenhouse gas and criteria air pollutant emission reductions resulting from travel efficiency strategies.

    Contact: Mark Simons, phone: (734) 214-4420, email:

  • Estimating Emission Reductions from Travel Efficiency Strategies: Three Sketch Modeling Case Studies (PDF) (76 pp, 2.5 MB, EPA-420-R-14-003a, June 2014)
    This report documents 3 case studies of the application of TEAM (Travel Efficiency Assessment Method) to assess the potential regional emission reductions from travel efficiency strategies. TEAM is an analytical approach that uses local travel activity information, sketch-planning travel activity analysis, and MOVES emissions modeling to estimate potential emission reductions from combinations of travel efficiency strategies. The case studies offered an opportunity for EPA to provide technical support to 3 areas interested in exploring tools to assess travel efficiency strategies, to demonstrate the capabilities of the TEAM approach, and to evaluate its usefulness at the regional scale. The resulting report documents the process, modeling and analyses performed in partnership with regional planners from Boston, Kansas City and Tucson. 
    Contact: Mark Simons, email:, phone: 734-214-4420.
  • Analyzing Emission Reductions From Travel Efficiency Strategies: A Guide to The TEAM Approach (PDF) (46 pp, 2 MB, EPA-420-R-11-025, December 2011)
    This document provides information and guidance for using the Travel Efficiency Assessment Method (TEAM) approach for assessing the potential of travel efficiency strategies for reducing criteria and greenhouse gas emissions. The guide supports a preliminary evaluation of emission reductions for several travel efficiency strategies and combinations of strategies. TEAM uses regionally derived travel model data and other travel activity information, sketch-planning analysis and EPA’s Motor Vehicle Emissions Simulator (MOVES) to estimate emission reductions. 
    Contact: Mark Simons, email:, phone: 734-214-4420.
  • Potential Changes in Emissions Due To Improvements In Travel Efficiency (PDF) (84 pp, 2.5 MB, EPA-420-R-11-003, March 2011)
    This report provides information on the effectiveness of travel efficiency measures for reducing criteria and greenhouse gas emissions at the national scale. The report describes an approach that uses regionally derived travel model data and other travel activity information, and sketch-planning analysis to estimate potential emission reductions from urban areas of varying size and characteristics. The results are applied to other urban areas in the U.S. of similar characteristic to estimate national emission reductions.
    • Potential Changes in Emissions Due To Improvements in Travel Efficiency - Supplemental Report: Analysis of Potential Co-Benefits (PDF) (21 pp, 1.7 MB, EPA-420-R-11-014, November 2011)
      In this supplemental report, several co-benefits resulting from the implementation of the travel efficiency strategies or combinations of strategies (referred to as scenarios) analyzed in the March 2011 primary report are evaluated. The co-benefits from implementation of these scenarios include a reduction in health impacts associated with air pollution, reduced traffic congestion, reduced user operating costs, improved energy security, and reduction in traffic accidents. 
      Contact: Mark Simons, email:, phone: 734-214-4420.
  • Transportation Control Measures: An Information Document for Developing and Implementing Emission Reduction Programs (PDF) (42 pp, 6.6 MB, EPA-430-R-09-040, March 2011)
    This document provides information on transportation control measures that have been implemented across the country for a variety of purposes, including reducing criteria pollutants and greenhouse gases. The document describes the processes used to develop and implement the strategies and, where available, their effectiveness.
    Contact: Mark Simons, email:, phone: 734-214-4420.
  • Benefits Estimates for Selected Transportation Control Measure (TCM) Programs (PDF) (95 pp, 677 K, EPA420-R-98-002, March 1999)
    This report quantifies TCMs that have been implemented, and outlines the methodologies used for estimating their emission and travel activity effects.
  • Methodologies for Estimating Emission and Travel Activity Effects of TCMs (PDF) (146 pp, 3.49 MB, EPA420-R-94-002, July 1994)
    This is an overview of several different methodologies available for assessing the potential emission reductions associated with transportation control measures.
  • Transportation Control Measure: State Implementation Plan Guidance 
    This document lists approval criteria that needs to be met so that a transportation control measure (TCM) may be incorporated into a SIP. The guidance also directs states to use additional TCM-specific guidance where available.
  • Index of Transportation Measure Quantification Efforts: Methodology Matrix 
    This is a list of summaries of a broad range of studies that have been conducted to evaluate the effectiveness of transportation control measures.
  • Transportation Control Measure Information Documents (PDF) (34 pp, 2.06 MB, EPA400-R-92-006, March 1992)
    This report describes variations in implementation, examples, expected transportation and emission impacts, and other important considerations for the 16 broad categories of TCMs as required and described under Section 108(f) of the Clean Air Act. 

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Transportation Pricing

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Guidance on Fulfilling Clean Air Act Section 182(d)(1)(A) Requirements (PDF) (7 pp, 830 K, 420-B-12-053, August 2012)