Ralph Buehler, PhD is Associate Professor in Urban Affairs & Planning and a Faculty Fellow with the Metropolitan Institute at Virginia Tech’s Alexandria Center. Most of his research has an international comparative perspective, contrasting transport and land-use policies, transport systems, and travel behavior in Western Europe and North America. His research interests include:
(1) the influence of transport policy, land use, socio-demographics on travel behavior;
(2) active travel and public health; and
(3) public transport demand, supply, regional coordination, and financial efficiency.
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Here is a comprehensive list of publications provided by google scholar.