FIELD EVALUATION METHODOLOGY FOR QUANTIFYING NETWORK-WIDE EFFICIENCY ENERGY, EMISSION, AND SAFETY IMPACTS OF OPERATIONAL-LEVEL TRANSPORTATION PROJECTS
In this dissertation, the author proposes a methodology using Global Positioning System (GPS) speed measurements for evaluating the efficiency, energy, environmental, and safety impacts of traffic flow improvement projects. The author also investigates the ability of various data smoothing techniques to remove erroneous data without significantly altering the underlying vehicle speed profile. It was found that the application of Robust Smoothing (Kernel of Exponential) to vehicle acceleration levels, combined with a technique for minimizing the difference between the integral of the raw and smoothed acceleration profiles, removes invalid GPS data without significantly altering the underlying measured speed profile. Applying the methodology to two case studies reveals the feasibility of using GPS second-by-second speed measurement for evaluating operational-level traffic improvement projects.
- Publication Date: 2001. UMI Company, Ann Arbor MI. Remarks: Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 2001. Abstract also in: Dissertation abstracts international. B. Vol. 62, no. 8 (February 2002), p. 3724. Format: website
Virginia Polytechnic Institute and State University, BlacksburgDepartment of Agronomy
Blacksburg, VA United States 24061
- Sin, Heung Gweon
- Publication Date: 2001
- Pagination: 138 p.
- TRT Terms: Global Positioning System; Safety; Technology assessment; Traffic control; Traffic signals
- Subject Areas: Operations and Traffic Management; Safety and Human Factors;
- Accession Number: 00962353
- Record Type: Publication
- Source Agency: UC Berkeley Transportation Library
- Report/Paper Numbers: AAT 3024747 (UMI order #)
- Files: PATH
- Created Date: Sep 2 2003 12:00AM