Citation

Last A, Daly AJ. Proc. IRCOBI 1975; 3: 333-340.

Copyright

(Copyright © 1975, International Research Council on Biomechanics of Injury)

DOI

unavailable

PMID

unavailable

Abstract

This description of how the walk mode is incorporated in the LGORU public transport modeling suite TRANSEPT (a sequence of models designed for short and medium term bus planning), includes a discussion of the relationship between bus and walk modes and an outline of the problems of scale that make walk modeling difficult. Some methods of estimating walk times are sketched, and theoretical problems involved in the incorporation of the walk mode in the modal split model are explored. The formulation of TRANSEPT's bus network representation is outlined in order to demonstrate how the role of walking as a feeder to bus services can be modeled. TRANSEPT models its modal split model so that predicted traveller's behavior takes account of the availability of the walk alternative. The basis of the formulation is the generalized cost function which weights together the diverse characteristics of travel alternatives particularly the component times and costs of different parts of the journey. With this measure a comparison of the relative attractiveness of the alternatives available can be carried out which ultimately leads to a prediction of the number of travelers using each.