01099512

Component

https://doi.org/10.3141/2076-02

http://scholar.google.com...Bovy&publication_year=2008

Predictions of route flows in networks are sensitive to the route choice model applied as well as to the route choice sets on which the choice models operate. Studies have shown that there is a significant impact of size and composition of route sets on estimation performance of route choice models in terms of estimated parameter values and model quality. These studies have looked at an aggregate level of modeling quality, but a better insight into the causes of the impacts requires a more detailed analysis of modeling quality at the level of choice prediction of individual routes. This paper addresses the issue of prediction quality of route choice in networks at a very detailed level in dependence of the size and composition of predefined route sets. For better control of experimental conditions, a small hypothetical network and generated trip data were used in combination with a systematic variation of size and composition of route sets so that all relevant properties of routes and route sets are known. A range of well-known route choice models was applied to study in a comparative way their sensitivity in predicting route choice probabilities as a function of the choice set properties. Most route choice models do not appear to have sufficient robustness of choice prediction at the level of individual routes.

01118266

English

pp 10-19

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309125918

Print

Figures (4) ; References (26) ; Tables (4)

Choice models; Impact studies; Route choice; Routes; Size

Robustness; Route choice composition

Highways; Planning and Forecasting; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Jan 29 2008 4:25PM

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