ITS Leeds is currently carrying out the following reviews of existing demand modelling work, respectively, for UKTram and the Department for Transport:
* Meta Analysis of Quantitative Research on Quality Attributes (UKTram). This will focus on studies which have attempted to value 'soft factors', either as catch-all mode-specific constants or by trying to disaggregate further the effect of individual attributes. We aim to compile a database of available evidence and to identify and explain common features as well as variations between studies.
* Further Meta Analysis of Values of Time and Elasticities (DfT). This builds on previous work by prof Mark Wardman and will attempt to explain variations in fuel, fare, time, headway and other non-fare elasticities across studies as a function of GDP, time, income, travel distance, trip purpose, methodology, etc. We're looking for studies that attempted to estimate any of the following parameters:
* Values of in-vehicle, wait, walk, headway or any other forms of time (since 2000)
* Fare/cost elasticities for rail, bus or car modes (since 1997)
* Non-fare elasticities for rail, bus or car modes (any year)
All the information collected will go into an existing 'pot' for analysis and is treated anonymously. The intention is that the results of both these studies will be of assistance to analysts and decision-makers working in demand forecasting and transport appraisal.
The first stage of this work is to identify relevant demand studies and possible contacts who may have access to project reports and model results. If you feel you can help I'd be very keen to hear from you.
Best regards,
Pedro Abrantes
Lecturer in Public Transport
Institute for Transport Studies, University of Leeds
Leeds LS2 9JT
Tel.: 0113 34 35344, Email: [log in to unmask] <mailto:[log in to unmask]>
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