Sep 13, 2018
This report documents the methodology and estimation results of the frequency model components of the South East Wales Transport Model (SEWTM). Frequency models have been estimated for seven home-based tour purposes. Models were also developed for work and non-work related non-home-based tours and detours. Travel frequency is predicted by applying two linked sub-models to predict the number of tours an individual makes on an average weekday in school term time. The first sub-model predicts whether an individual makes at least one tour in a day, and the second predicts the number of tours for a given purpose, given that the individual has made at least one tour.
The socio-economic parameters that are found to be significant in explaining frequency of travel depend on the tour purpose and type but include employment status, age, household size and car availability.
Frequency model specification
Home-based frequency models
Non-home-based frequency models
Adjustments to work-related travel frequency