Cost Effectiveness and Magnitude of Potential Impact of Various CongestionManagement Measures

摘要

Phoenix and Tucson are 'non-attainment' areas under the EPA's air qualityguidelines. Vehicle traffic is the main man-made source of the region's air quality problems. Various methods for reducing the vehicular contribution to air pollution are constantly under consideration and debate. The potential impact on air quality of each measure varies. Each measure also has a different price associated with it. At the same time, there are limited resources available to fund these measures. The original contribution of this report is contained in the translation of congestion abatement impacts into air quality impacts. The air quality estimates are calulated using numbers specific to Phoenix and Tucson. The methodology permits comparison of the available congestion abatement options by the potential magnitude of emissions reductions and by cost-effectiveness of removing pollutants. The near term (within five years) results are summarized in the Tables A1 through A4, for Phoenix and Tucson, respectively. The purpose of this report is to provide policy makers with a guide to options that are available to reduce congestion that may lead to a more cost-effective program for reducing vehicle generated air pollution.