The Australian Railway Research and Development Organization is conducting a study, and one of its objectives is to determine factors that affect freight modal use. Part of this has included the development and calibration of freight modal-choice models. The results obtained from the application of an elimination-by-aspects (EBA) model to this task are outlined. The theoretical background to the EBA model and the results of the model when applied to three samples of shippers involved in regional freight transport are described. For each sample, models are calibrated and, on the basis of attribute significance and correlations, these models are refined and recalibrated. Measures of elasticity are then calculated for each attribute in the refined model. The results of the model calibration are then discussed and are found to be plausible given the nature of the shippers in each sample. It is concluded that it is possible to use an EBA model for the analysis of freight modal choice. Areas of future research are identified, and implications of the research results for railways are discussed. (Author)
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