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Improved Data Collection and Evaluation for Mobile6 Based Conformity Analysis of Transportation Projects. Final rept. 1 Jan 01-15 Jan 02.
| 题名： | Improved Data Collection and Evaluation for Mobile6 Based Conformity Analysis of Transportation Projects. Final rept. 1 Jan 01-15 Jan 02. |
| 作者： | Williamson-D.; Yao-M. |
| 关键词： | *Conformity-assessments; *Traffic-counts.;Data-sources; Alabama-; Data-collection; Evaluation-; Computer-software; Inventories-; Recommendations-. |
| 摘要： | In response to federal air quality programs, state transportation and air quality agencies are obligated to estimate emissions from on-road vehicle fleets. The U.S. Environmental Protection Agency has developed the MOBILE models which estimate vehicle emission factors. However, local data describing vehicle activity and fleet characterization is rarely available in a format appropriate for the MOBILE models. This project was conducted to produce a methodology for the Alabama Department of Transportation (ALDOT) to collect and use local fleet data in support of MOBILE6-based emission inventories. To be beneficial to ALDOT, the proposed methodology had to utilize data and resources that were already being collected as part of other programs. Additionally, any software developed as part of the methodology had to be user friendly, written in Visual Basic, updatable, and easily integrated into existing programs and electronic infrastructure. This project focused on vehicle counts as a surrogate for local vehicle miles traveled (VMT) data. VMT distributions by vehicle class are important input data to the MOBILE models. In compliance with federal standards, ALDOT already collects high-quality traffic data for the Highway Performance Management System (HPMS). HPMS classified traffic count data was selected as the source of local vehicle counts. |
| 报告类型： | 科技报告 |
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