policy briefClean Air in Cities: Impacts of the Layout of Buildings in Urban Areas on Pedestrian Exposure to Traffic-Related PollutantsPublication DateJune 1, 2020Areas of Expertise Public Transit, Shared Mobility, & Active Transportation Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment View policy briefRelated Publications published journal article Clean air in cities: impact of the layout of buildings in urban areas on pedestrian exposure to ultrafine particles from traffic