A methodology for the assessment of ridesharing program benefits and impacts
Abstract Due to the increased cost and decreased availability of energy, many cities are developing experimental ridesharing programs. The evaluation of such public transportation programs often involves some form of benefit/cost analysis. In this paper we review a methodology proposed by Wagner for calculating ridesharing program benefits. We propose a modification for calculating vehicle-miles reduction and suggest a survey instrument for collecting the appropriate data. In addition, we present a surrogate measure which is simpler to compute and allows sensitivity analysis for incorporating certain intangible factors. Data from a survey conducted in the Greater Cincinnati area is used to illustrate the calculations. The results can be useful in evaluating other ridesharing programs.
Planning and analysis of a ridesharing evaluation study
Abstract We present a case discussion of the development of surveys for evaluating a metropolitan ridesharing project. We trace the conceptual development of an “ideal” survey design, the problems encountered in actual implementation, and finally the design of a low-cost narrow-range survey which focuses on specific information used to assess program benefits. We feel that this discussion can assist other ridesharing agencies, particularly those in the initial stages of formation, in determining costs and outcomes of specific survey techniques.
FURUTA INEQUALITY AND ITS RELATED TOPICS
This article is devoted to a brief survey of Furuta inequality and its related topics. It consists of 4 sections: 1. From Lowner-Heinz inequality to Furuta inequality, 2. Ando-Hiai inequality, 3. Grand Furuta inequality, and 4. Chaotic order.