This page allows downloading of papers and reports of work I did with Stan Zachary in the mid 1970’s.
Commuters' Values of Time: a 1975 LGORU report introducing the use of random utility to measure willingness to pay, discussing model formulation and estimation procedures (using maximum likelihood), setting up and estimating a random parameter model and the confidence limits for its parameters and applying these to estimate values of travel time.
Improved Multiple Choice Models: the original 1976 conference paper establishing conditions for the consistency of tree logit with RUM. This does not include the proof of Zachary's seminal theorem, which was published much later.
Zero Fares Report: the 1977 report of a study to estimate the impact of ‘zero fares’ public transport travel, including analysis methods for missing data, a very early sample enumeration application (perhaps the first) and a model of car ownership depending on transport times and costs.
Zero Fares Appendices: the Appendices to the Zero Fares report, giving technical details. In particular, Appendix 3 detailing the treatment of missing data and Appendix 8 presenting the sample enumeration calculation may be of interest.
Huddersfield Waiting Time Report: A 1977 report describing data collection and analysis of waiting times for buses in Huddersfield (West Yorkshire) in 1974.
