Nonlinearities in the Valuation of Travel Attributes.

The valuations of prices and values of travel times are key parameters in the calibration of the demand side of traffic simulation systems. However, it seems that practical requirements are fogging the real nature of these concepts. We propose a discrete choice theoretical framework for the regular journey-to-work, within the individual is allowed to twist the e.ective levels of travel attributes, defining different prices of times strictly related to the traveller’s tastes and behaviors, but also depending on the travel alternatives and their corresponding effective levels of supplied attributes. We use a Box-Cox Logit specification for the calibration of a binomial mode choice model using data from the 1998 French Parisian Travel Survey. We find heterogenous results, but some robust considerations concerning the individual behavior and willingnesses to pay for travel times are emerging through our estimations. JEL : C35, D11, J20

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