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Concerns over traffic congestion and environmental pollution have prompted more studies into the impacts of built environment on commuters' mode choice behavior. This paper aims to make a comprehensive analysis of commuters' mode choice behavior with the 5th Household Travel Survey in Beijing. A mixed nested logit model was employed to jointly explore the impacts of mode attributes and built environment variables on commuters' mode choice. The results show that the proposed mixed nested logit model outperforms the contrastive models, i.e., standard multinomial logit model and nested logit model. Estimated results indicate that non-motorized mode commuters pay more attention to OD distance. Land-use mix and density have significant influence on reducing car preference, and only show significant effect in working zone. Furthermore, public modes including bus and subway are regarded as one group that the convenient of either one of them changes will influence commuters' preference on the whole public transportation system. [ABSTRACT FROM AUTHOR]

With the development of social economy and health care technology, people are expected to live longer, and the world's population tends to be ageing. As one of the services for elderly people, the concessionary bus travel programme provides a kind of social welfare for elderly people, while peak-hour traffic pressures (e.g., traffic congestion, traffic injuries, and travel discomfort) faced by elderly people have been ignored. This paper attempts to help society create a better travel environment for elderly people by analysing their travel behaviours. Specifically, using household survey data from Beijing, the statistical analysis is used to paint a more detailed picture of daily travel experience of elderly people with regard to departure times, travel purposes, travel mode choices, etc. Then, a nested logit model is employed to interpret travel patterns of elderly people. The results show that the bus plays the most important role in motorized travel of elderly people. Furthermore, the free bus programme has induced only 4.85% of bus travel among elderly people, indicating that the programme has little effect on elderly people's bus choices. Based on the results of the analysis, several options are proposed in this paper to help society adapt to the changing demographics. [ABSTRACT FROM AUTHOR]