Personal exposures to traffic-related air pollution in three Canadian bus transit systems: the Urban Transportation Exposure Study.

ABSTRACT:

Background

Exposure to traffic-related air pollution (TRAP) is associated with increased incidence of several cardiopulmonary diseases. The elevated TRAP exposures of commuting environments can result in significant contributions to daily exposures.

Objectives

To assess the personal TRAP exposures (UFPs, BC, PM_2.5, and PM₁₀) of the bus transit systems of Toronto, Ottawa, and Vancouver, Canada. Personal exposure models estimated the contribution of bus commuting to daily TRAP exposures. Associations between bus type and riding exposures and bus stop/station type and waiting exposures were estimated.

Results

Bus commuting (4.6% of the day) contributed ~59%(SD = 15%), 60%(SD = 20%), and 57%(SD = 18%) of daily PM_2.5-Ba and 70%(SD = 19%), 6

SUBMITTER: Van Ryswyk K 

PROVIDER: S-EPMC8263338 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature