01629694

Component

The authors test a copula-based joint discrete-continuous model to unravel mode choice and travel distance in a simultaneous framework for school trips. Joint estimation of the models made a significant difference in the effect of travel distance on willingness to walk to school. The absolute value of travel distance coefficient in the mode choice model increased by 22% when a joint formulation was adopted instead of the conventional single estimations. Further, the authors found a significant decrease of 19% in the coefficient of travel safety perception in the joint mode choice model compared to the single model. This underscores the impact of model specification, in terms of policy assessments. Effect magnitude of several policy-sensitive variables was also discussed and compared with previous studies. Particularly, the authors found that the probability of walking reduces by 0.85% due to a 1% increase in travel distance; also, it propels parents to select non-active modes, especially school bus. Further, this study demonstrated that addressing parents’ concern about travel safety could double the propensity to walk to school.

This paper was sponsored by TRB committee ADB40 Standing Committee on Transportation Demand Forecasting.

01618707

17-06797

English

20p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; References; Tables

Choice models; Mode choice; Multinomial logits; Pedestrian safety; School trips; Traffic safety; Trip length; Walking

Pedestrians and Bicyclists; Planning and Forecasting

Transportation Research Board Annual Meeting 2017 Paper #17-06797

TRIS, TRB, ATRI

Dec 8 2016 12:47PM