Cost Damping in Travel Demand Models
|Publisher:||Department for Transport|
|Published date:||23 February 2010|
|Mode/topic:||Roads, Appraisal and evaluation|
The research investigated realism tests of transport models and the role of cost damping mechanisms. There was very strong evidence to support the use of cost damping, but little evidence to favour one particular mechanism. Theoretical considerations favour mechanisms that permit the value of time to increase with trip length. A ‘kilometrage test’ rules out some damping mechanisms and/or places bounds on their parameters, which need to be estimated as an integral part of model development.
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