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

COMPARATIVE EVALUATION OF THE COST-EFFECTIVENESS OF 58 TRANSPORTATION CONTROL MEASURES

Often when public agencies allocate funding for transportation programs, evaluation of a project\u27s performance becomes an afterthought, if a consideration at all. Relatively recently, evaluation of project performance has garnered attention as a means for both assessing how cost effectively public funds help attain transportation and air quality objectives and guiding future public investment decisions. Nonetheless, these efforts suffer at times from a lack of coordination and would benefit from the application of a standardized method. Such a standardized method is applied to evaluate the cost effectiveness of three categories of transportation control measure (TCM) projects: fixed-route transit, transportation demand management (TDM), and alternative fuel projects. The method provides a means for estimating and quantifying travel mode effects and converting them to net emissions benefits. Three sets of funding programs implemented in California were the subjects of evaluation efforts in which the standardized method was applied. The results of these evaluations are presented, and conclusions are suggested about project cost effectiveness on the basis of project data and comparisons across categories of projects. On the basis of the evaluation of 58 projects, TDM projects other than telecommunications projects were cost effective compared with alternative fuel and fixed-route transit projects. In light of the key evaluation findings, an approach and framework for future evaluations of TCM projects to ensure consistency and comparability are proposed. Some future uses of the evaluation data in the form of a centralized database are also suggested

Opening Oz\u27s curtain: who’s really running the annual IEP meeting to discuss secondary transition issues?

We conducted a qualitative analysis of written transcripts from nine teacher-led middle and high school IEP meetings for students with learning disabilities to determine common themes regarding student roles during these meetings and the meeting process itself. We found two overall meta-themes (e.g., instant vision and out of focus), seven themes (e.g., whose meeting is this, clear as mud, ignoring stated needs) and five subthemes (e.g., better left unsaid, form-driven meetings, one size fits all). Even though students attended the meetings we analysed, the discussions and decision making took place as if they were not present. We discuss implications for educational practices and suggest future research needs

Geohydrology and water quality of the unconsolidated deposits in Erie County, Pennsylvania /

Shipping list no.: 96-0203-P.Includes bibliographical references (p. 87-90).Mode of access: Internet