An investigation of tour generation models combining two waves of household travel surveys through pooled models

Kollol Shams, Hamidreza Asgari, Md Sakoat Hossan and Xia Jin

Transportation Planning and Technology, 2018, vol. 41, issue 3, 229-243

Abstract: This paper presents a study that examines two waves of travel survey data through a pooled model structure. The pooled model structure provides a means to take advantage of multiple data sources which will lead to a better estimate and understanding of travel behavior. In particular, it accounts for the difference in data variance and therefore allows for the comparison of the true impacts of the model parameters on travelers’ tour-making behavior. Larger variance is found in the 1998 data than in the 2010 data. Comparison between model parameters reveals significant behavioral changes among several socio-economic and demographic groups. In terms of common variables, the magnitude of the coefficient values has generally decreased, which conforms to the overall decreasing trend in traveling. Overall, the model equality tests indicate that the models developed based on the two data sources do not have equal taste parameters, thus the transferability hypothesis is rejected. The results of this study are expected to have implications for the application of models based on cross-sectional data, especially over long time periods.

Date: 2018
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DOI: 10.1080/03081060.2018.1435415

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