The purpose of this study was to monitor normal daily traffic and to correlate traffic congestion with ambient levels of particulate matter less than 2.5 microns (PM2.5) from the Borman Expressway in Hammond, IN. Traffic data collection with the assistance of the Indiana Department of Transportation began on June 7, 2001. The 3M Intelligent Transportation Systems Canoga C800IS software at milepost 3.5 along the Borman Expressway collected vehicle volumes and occupancies. The tapered element oscillating microbalance (TEOM) located approximately 150 feet south of the Borman expressway near milepost 4.1, measured ambient PM2.5 every ten-seconds. Traffic congestion occurred on eastbound lane B between 10:00 AM and 1:00 PM on June 8, 2001, which resulted in an increase of 400% in PM2.5 flux.
Samenvatting