Transferability and updating of disaggregate travel demand models
Furthermore, the paper notes that variables and file structures in household surveys need to be consistent.
The paper emphasizes that Tobit models perform better than regression or discrete choice models in estimating nontravelers.
The “outliers” do not have a statistically significant effect (at 0.05 level) on the coefficients; however, the outliers can have a substantial effect on the point estimates of some of the coefficients.
Model specification has an impact on model coefficients and model explanatory power.
The analysis demonstrates that improving model specification improves the transferability of the models, and in general the transferability declines as the transfer period increases. Miller (1995) Analysis of the Temporal Transferability of Disaggregate Work Trip Mode Choice Models. Atherton (1977) Methodology for Short-Range Travel Demand Predictions.
The transferability of the level-of-service parameters is higher than transferability of the cost parameters, which has important implications when considering the accuracy of forecasts for different types of policy. Ben-Akiva (1976) Transferability and Updating of Disaggregate Travel Demand Models. In Transportation Research Record: Journal of the Transportation Research Board, No. In Transportation Research Record: Journal of the Transportation Research Board, No. Journal of Transport Economics and Policy, 11, 1977, 224–261. (1981) Issues in Transferring and Updating Travel-Behaviour Models.