Travel Behavior

The proportion of teens and young adults with driver’s licenses has declined sharply in many industrialized countries including the United States. Explanations for this decline have ranged from the introduction of graduated driver licensing programs to the increase in online social interaction. We used a longitudinal cohort study of teenage girls in San Diego and Minneapolis to evaluate factors associated with licensure and whether teens’ travel patterns become more independent as they age. We found that licensure depended not only on age but also on race and ethnicity as well as on...

Understanding how the built environment at a neighborhood scale is associated with individuals' walking has been a common research objective in public health and city planning. In contrast to the extant literature, we examine whether a neighborhood's location defined at a regional scale is associated with walking and whether this association is separately identifiable from the association of the neighborhood built environment and walking. The findings indicated that walking for commuting purposes was associated more strongly with neighborhood location than with the neighborhood built...

This report documents work accomplished during Fiscal Year 2005-2005 as a part of a research project entitled “New Approach to Bottleneck Capacity.” This project is developing an alternative to the traditional Highway Capacity Manual approach to capacity analysis in which capacity flow [either pre-queue flow (PQF) or queue discharge flow (QDF)] is related to a set of intervening variables, including the average time gaps in the critical lane (i. e., that with the highest flow rate) and the distribution of flow across the lanes, represented by the critical lane flow ratio (i. e., the flow...

This study examined the potential of advanced information systems to increase the mobility of disabled travelers using public transportation. A stated preference survey inquired as to whether subjects would make more trips by transit, paratransit, and/or real-time paratransit if kiosk, on-board, in-home, and/or personal information systems were available. The results show that these systems do have the potential to increase the use of public transportation by disabled travelers, as they allow for more trip flexibility that what is currently available. Regression and log-linear models show...