Using a Land-use/transport/economic Model in Edinburgh
D C Simmonds, V M White, David Simmonds Consultancy, UK: S Leitham, S Williamson, MVA, UK
This paper describes the land-use/transport/economic interaction model developed by the authors and colleagues for Edinburgh, and discusses some of the issues arising in the use of a sophisticated model system in analysis of controversial proposals.
This paper describes work by MVA and DSC to model the interactions between transport, land-use and the economy in order to examine the impacts of the proposed Edinburgh Congestion Charging Scheme (ECCS), part of the City?s Integrated Transport Initiative (ITI). The proposed ECCS and the basis of the examination of impacts was the subject of a Public Inquiry in 2004 and the Inspectors reported last autumn.
The Edinburgh LUTI/LEI Model consists of
- the Land-Use / Transport Interaction (LUTI) component, comprising the transport and urban land-use models of the Edinburgh sub-region, and
- the Local Economic Impact component - a multi-area economic model, covering the whole of Scotland.
These are implemented using an integration of MVA?s TRAM package with DSC?s DELTA package. Key characteristics of TRAM are its ability to deal with different tolling and parking regimes, its disaggregation of demand and its range of behavioural responses including:
- frequency, destination and mode choice;
- time of day choice (9 time periods); and
- detailed parking choices.
Key characteristics of the DELTA model as applied for Edinburgh are
- a detailed classification of households and employment;
- distinct urban and regional processes of change over time; and
- land-use responses to accessibility change at both local and regional levels.
The paper will describe the model and its application to modelling the ECCS/ITI package, which includes:
- congestion charging;
- major bus service and park-and-ride enhancements;
- new and extended tram lines; and
- urban environmental improvements.
The paper will draw out some of the wider lessons which have been learnt during the project both about the modelling itself and about the use and presentation of results from such a model in the context of a controversial proposal.
Association for European Transport