This unpublished report describes a one-year study aimed at evaluating low-cost sensors in a dense network of near-road monitoring sites in the San Francisco Bay area. The overarching goal was to evaluate the ability of low-cost sensors to characterize traffic-related air pollution. The specific aims were to (1) colocate and compare low-cost sensors with regulatory instruments and (2) evaluate the ability of the low-cost sensors to characterize variations in traffic-related air pollution that are associated with different traffic counts. The topic of the study is of interest since the development and use of low-cost air pollution sensors are progressing rapidly, and these sensors have the potential to transform the way air pollution research is conducted.
This report and the accompanying Review Committee Critique of the report are available upon request.