Transportation Control Measures (TCMs) are often a vital component of the overall plan adopted by transportation agencies to achieve their air quality goals. However, in an environment of limited funding only the most effective projects can be implemented, and agencies require metrics to help determine which TCMs to pursue. The comparison of different TCMs is complicated by the fact that projects which address one pollutant may not impact another, and while Ozone is analyzed on a daily basis, PM2.5 and its precursors are evaluated using an annual comparison. There is a need to simplify the analysis and selection of projects by providing a metric or composite measure that summarizes total emissions benefits in a clear and concise way. This paper focuses on a metric developed for the New Jersey Department of Transportation in support of their recent analysis of Reasonably Available Control Measures (RACMs.) The Emissions Score was developed as a way to collapse both annual and daily estimates of emission benefits for multiple pollutants into a single, consistent value. This metric considers the annual and daily emissions targets for each pollutant, the estimated current inventory for each pollutant and a series of weighting factors that emphasize the pollutants of most concern to the region. The Emissions Score was used to rank the proposed projects in terms of overall impact. Ultimately this rating, combined with other factors such as cost effectiveness and political feasibility, was used to articulate the effectiveness of the TCM projects proposed in the study.


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    Title :

    The Emissions Score, a Composite Measure for Ranking Transportation Control Measures and Similar Projects in Terms of Emissions Benefits


    Contributors:

    Conference:

    Transportation Land Use, Planning, and Air Quality Congress 2007 ; 2007 ; Orlando, Florida, United States



    Publication date :

    2008-05-15




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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