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Title: HOW DO WE KNOW EMPLOYER-BASED TRANSPORTATION DEMAND MANAGEMENT WORKS? THE NEED FOR EXPERIMENTAL DESIGN
Accession Number: 00732504
Record Type: Component
Record URL: Availability: Find a library where document is available Abstract: Several studies of employer-based demand management programs have been conducted in the past few years. Many have drawn conclusions about effects of the programs by examining before and after program changes in the proportion of solo drivers among the employees involved in the program. Others compare before and after data to solo driving trends in the surrounding area or at selected employment sites. Still other studies do not use before and after data at all, but simply compare the proportion of solo driving among program participants after implementation with an average rate for the area or region. The weaknesses of these approaches to evaluating demand management programs are discussed, remedies for these weaknesses based on classical experimental design from the social science and statistical literature are suggested, and the results of an experimental design of employer trip reduction programs in the Denver region are highlighted. The example illustrates the required elements of an experimental design, as well as some difficulties in executing the design.
Supplemental Notes: This paper appears in Transportation Research Record No. 1564, Transportation Demand Management and Ridesharing.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Higgins, T JPagination: p. 54-59
Publication Date: 1996
Serial: ISBN: 0309059615
Features: Figures
(2)
; References
(11)
; Tables
(9)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Feb 27 1997 12:00AM
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