A major concern with the derivation of willingness to pay (WTP) distributions from mixed logit models is the incidence of values over a range that are deemed 'behaviourally questionable', with respect to the sign and magnitude. Recent research in redefining the 'space' within which a choice...

Random utility maximisation is the pre-eminent behavioural theory used to model choices. An alternative paradigm, however, is random regret minimisation. While the majority of the literature examines the choices of individuals, this paper compares the choices of groups, as well as individuals,...

This paper investigates support for road pricing reform within a referendum voting choice model. Central to this is how to identify believable ex-ante support for specific road pricing schemes. Our approach is centred on a referendum voting choice model for alternative road pricing schemes, with...

There is a growing recognition that the study of discrete choice outcomes should take into account the process rules that are used to establish eligibility of each attribute. This paper proposes a joint process-outcome model in which the choices made are conditioned on the rules adopted by each...

There is a renewed interest in the development of behavioural models designed to identify the major determinants of household vehicle purchase. This is due, in part, to the growing interest in the economic viability of the automobile industry, rising fuel costs and increasing enhanced greenhouse...

The value of travel time savings (VTTS) is a critical parameter in transport project appraisal and through its application produces the dominating user benefit, typically 60 per cent of traditionally quantified user benefits. Beesley's work in the 1960s laid the foundation for much of the...

Over the past two decades the bus industry in many countries has been involved in a process of economic deregulation, competitive regulation, and privatisation. Among the policy practices designed to increase competition, competitive tendering represents a popular policy intervention. The focus...

Competitive tendering (CT) is a popular mechanism for the provision of transport services where a major objective is the containment of the cost to government of service provision. Although the primary focus is recognised as cost efficiency, whereby the cost outcome should be conditional on a...

This paper explores the influence of the dimensions of stated choice (SC) designs on the value of travel time savings. Utilising principles of experimental design, 16 choice designs are embedded within a global design in which we vary the number of choice sets, the number of alternatives in each...

Two issues that reflect how individuals make travel or vehicle purchase choices are the relevance of attribute levels associated with alternatives, and the extent to which the respondent is certain of actually choosing the alternative that they indicated was their preferred alternative. This...