Usually accepted assumptions on the role of income in transport demand modelling are changed, in order to better account for the reality within developing countries. The usual specification of representative utility is shown to be inadequate and new forms are suggested. In particular, an...

The microeconomic foundations of mode choice models postulate modal utilities which are additive in income; this actually makes choice independent of this variable. On the other hand, it has been argued that income is correlated with variables that reflect taste and therefore, has a place in the...

Full description of transportation output as a vector of flows would make the estimation of transportation cost functions unfeasible in most real cases. In this paper we generate procedures to aggregate flows in an optimal way (i.e. such that a pseudo cost function specified in terms of...