The report provides an overview of federal statutes and policies which form the foundation for air quality planning related to transportation systems development. It also provides a detailed presentation regarding the use of federally mandated air quality models in estimating mobile source emissions resulting from transportation development and operations. The authors suggest ways in which current practice and analysis tools can be improved to increase the accuracy of their results. They also suggest some priorities for additional related research. Finally, the report should assist federal agency practitioners in their efforts to improve analytical methods and tools for determining conformity. The report also serves as a basic educational resource for current and future transportation and air quality modeling.


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    Improved Travel Data Required for Mobile Source Emission Estimates, NCHRP 25-7

    Wholley, T. F. | British Library Conference Proceedings | 1995


    Impacts of Simplified Time-of-Day Models on Mobile Source Emission Estimates

    Benson, J. D. / Mullins, J. A. / Clark, A. C. | British Library Conference Proceedings | 1995