Modelling Reality: Complex Junctions and Guided Bus



Modelling Reality: Complex Junctions and Guided Bus

Authors

CLARK S, GOODMAN P and LIU R, ITS, University of Leeds, UK

Description

There has been an increasing interest in the United Kingdom and world wide in the potential of guided bus systems to provide enhanced public transport provision. The system uses a dedicated guideway to enable equipped buses to bypass other traffic at cong

Abstract

There has been an increasing interest in the United Kingdom and world wide in the potential of guided bus systems to provide enhanced public transport provision. The system uses a dedicated guideway to enable equipped buses to bypass other traffic at congested points, so to eliminate delays to buses and improve service reliability. Experience shows that central to the success of such scheme is their design and integration with traffic management measures to give guided buses priority on approaching junctions. This paper describes the microsimulation modelling of a number of complex junction designs for guided bus priority measures using a microsimulation model suite. The paper firstly introduces the concept of guided bus and then argues that the complex interactions, which such systems introduce into the network, are best represented by microsimulation models. The paper describes the microsimulation modelling techniques developed, the variables used to represent the guided bus systems and the outputs from the simulation that can be used to assess their performance. It then provides illustrative examples from the modelling of two junctions and a section of 'interrupted' guideway as originally proposed in the East Leeds guided bus scheme. The first junction being a staggered crossroads, whilst the second, a high-capacity crossroads. The paper will highlight the challenges in modelling complex guided bus designs, and suggest facilities which simulation models require in order to successfully model such schemes.

Publisher

Association for European Transport