HOME AIR FILTRATION FOR TRAFFIC-RELATED AIR POLLUTION (HAFTRAP). Dr Doug Brugge | The Community Assessment of Freeway Exposure and Health Studies: Minimising Exposure to Traffic-related Air Pollution Conference PostersA randomized crossover trial of portable in-home air purifiers for highway PM and cardiovascular risk: HAFTRAP Study update.Acceptability of home air purifiers to reduce traffic-related air pollution in near-highway residences