METHODOLOGY FOR EVALUATING HIGHWAY AIR POLLUTION DISPERSION MODELS.

The report contains a comprehensive methodology for assessing the performance of dispersion models used to estimate highway-related air pollution. The methodology is also applicable to other types of models. Application of the methodology requires a substantial data base developed as part of the research. The data base provides carbon monoxide, meteorological, grade and alignment, and traffic data describing a wide range of environmental conditions. A preliminary evaluation of selected models was performed to demonstrate the use of the methodology and data base.