Evaluations are an important source of information for improving the effectiveness of transportation demand management (TDM) programs. Evaluations of the TDM program at Bishop Ranch, California, provide insight on how to improve services by strengthening the link between the commuter and the operation of a TDM program. Thorough evaluation requires both essential core data (commute distance, home location, commute mode, and arrival time) and supplemental information about topics such as the flexibility of work hours, analysis of subgroups, and attitudes toward various incentives and disincentives. Key issues include problems with the use of the current mode as a measure of effectiveness, lack of knowledge about the effect of flexible work hours on mode choice, and the importance of the initial design for time-series comparisons.
Abstract