Proportional multi-routing assignment algorithms represent a significant advance in public transport assignment modelling. They overcome a number of problems arising from the use of 'all- or- nothing' assignments which have been commonplace in public transport modelling in recent years. Proportional multi-routing assignments are now used in planning light and heavy railwa s in London. Recent applications include planning of major Underground line proposals and new station and service configurations on the Docklands Light Railway. The paper concentrates on the use of the techniques in the latter context. It discussed the conversion of the Docklands Public Transport Model (DPTM) data which had previously utilised an all- or- nothing assignment algorithm, to a modelling system utilising proportional multi-routing assignment. A case study of the application of new techniques to proposed station location and service patterns for the Tower Hillarea is presented. For this case study origin-destination matrices were derived from the London Transportation Study. These were then updated in line with estimations of traffic generations arising from the planned developments in Docklands supplied by the London Docklands Development Corporation. These were assigned over a detailed specification of the public transport network and proposed services in East London. The results of the case study are presented, and conclusions on the implications of the assignment technique are given.
Abstract