The effect of Smog-Ozone warnings and a vanpool program on traffic volume in york county of south carolina

Ground-level ozone is a critical criteria pollutant that is significantly generated by transportation patterns. We study the effect of smog–ozone warnings, triggered by the Environmental Protection Agency, on traffic volume in York County, South Carolina during the period 2006–10. In addition, the subperiods 2006–07 and 2008–10, where the ozone smog-alert thresholds 0.080 parts per million (ppm) and 0.075 ppm, respectively, are examined. The approach followed in this paper is a differences-in-differences (DID) regression. Additionally, a regression discontinuity design in the DID framework is applied. We find a negative and significant decrease in weekday peak-hour traffic volume in the treatment group during 2008–10

Alberta streetscape project : Project summary : Revitalizing a street, rebuilding community, realizing a dream

8 pp. Figures, illus. Published December, 2001. Captured May 21, 2009.This document outlines the elements of the Alberta Streetscape Project. On the following pages, a map identifies where the improvements will be built, along with written descriptions, sketches and diagrams. [From the document]"The Alberta Streetscape Project is funded by agencies committed to making Alberta a vital neighborhood main street.