The average travelling speed increases in a nontrivial manner with the travel distance. This leads to scaling-like relations on quite extended spatial scales, for all mobility modes taken together and also for a given mobility mode in part. We offer a wide range of experimental results, investigating and quantifying this universal effect and its measurable causes. The increasing travelling spee...

INTRODUCTION The Americans with Disabilities Act (ADA), passed in 1990, required that a specialized transit service be provided to serve disabled people within 3/4 of a mile of existing standard bus routes and light rail stations. Having such services available, elderly and disabled people have a unique mode choice decision that is not available for typical travelers: the choice between public ...

BACKGROUND Long distance is a leading environmental barrier to walking to school and requires long-term, multilevel interventions. Meanwhile, childhood obesity remains highly prevalent, calling for more immediate solutions. PURPOSE The purpose of this study was to examine attitudinal and environmental correlates of walking to the elementary school, controlling for distance. METHODS Using pa...

At long ranges, broadband receptions consist of early ray-like arrivals and a finale that is best described in terms of the low order modes. The energetic low mode signals are more strongly affected by internal wave scattering than the ray arrivals. By focusing on the low modes, this project seeks to develop a better understanding of internal wave effects. The first objective of this project is...

This study investigated the association between a change in travel mode to school and one-year changes in physical activity (PA) among children in Hong Kong. Data from 677 children aged 7-10 years (56% boys) who participated in the Understanding Children's Activity and Nutrition (UCAN) study were analyzed. During the 2010/11 and 2011/12 school years, the children wore an accelerometer for a wee...