Contemporary public health research and policy recognises that active transport (walking, cycling, and the use of public transport), transport systems, and urban design affect population health. These associations are evident at international, national, regional, and local levels. They operate through the safety of populations in terms of injuries due to road crashes, air pollution, traffic congestion and noise, levels of physical activity, and access to essential goods and services, as well as social connections. Much more needs to be understood about these important contributors to population health, and more importantly, what public health interventions can improve in population health.

We invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand the effect of active transport, transport systems, and urban design on population health and to help develop intervention strategies to increase active transport and improve transport systems and urban design. We are particularly interested in the evaluation of interventions with population health outcomes. Investigators who have conducted research on these topics are invited to submit manuscripts for consideration for this special issue on the effect of active transport, transport systems, and urban design on population health in the Journal of Environmental and Public Health. Potential topics include, but are not limited to:

• Recent epidemiologic studies on active transport, transport systems, and urban design
• Recent epidemiologic studies on the effect of active transport, transport systems, or urban design on environmental and population health
• Reports on public health and health promotion intervention studies
• Reports on intervention trials and program evaluations
• Recent advances in assessing or monitoring changes in active transport, transport systems, and urban design

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jeph/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: