The calibration of choice models produces a set of parameter estimates and an associated covariance matrix, usually based on maximum likelihood estimation. However, in many cases, the values of interest to analysts are in fact functions of these parameters rather than the parameters themselves....

Practically every international, national or regional freight transport model system in the world lacks explicit treatment of logistics choices (such as shipment size considerations or the use of distribution centres). This paper deals with the development of a new logistics model and its...

Generalised extreme value models provide an interesting theoretical framework to develop closed-form random utility models. Unfortunately, few instances of this family are to be found as operational models in practice. The form of the model, based on a generating function G which must satisfy...

The paper by Koppelman and Wen (1998) on nested logit structures (subsequently referred to as K&W), draws attention to alternative formulations of nested or 'tree' logit models. The intention of this note is to highlight some deficiencies in that paper and comment on the points raised in the...

The existence of the "tree" generalisation of the multinomial logit model, its consistency with theories of "rational" human behaviour, as well as the advantages offered in terms of more realistic modelling by this model form, have all been known for some time. Although a few studies have...

The paper presents a family of disaggregate choice models, which are shown to be equivalent to many of the aggregate models commonly used in planning studies. A brief summary is given of the method that has been developed for estimating the parameters of these models. A generalisation is then...

Duration models are still very uncommon in transportation analysis, although they have been extensively applied in some other fields (medicine, labour market economics). The model system developed in this paper contains several submodels, one of them being a duration model for the time elapsed...