ArticleBMC public health2025
Occupational hazard to on-road air pollution within passenger transport micro-environments: evidence from traffic congested areas in Colombo, Sri Lanka.
Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundTraffic-related on-road air pollution is a major contributor to outdoor air pollution globally, particularly in developing countries most often due to outdated vehicle technology, and weaker emission control regulations. Drivers providing passenger transport services are constantly at higher risk. This study investigated the exposure to air pollutants of transport microenvironments (TME) of such vehicles most popular in heavy-traffic congested areas in the district of Colombo, Sri Lanka.
methodsA cross-sectional study was conducted in the TME of three vehicular types: three-wheeled taxi, non-AC bus and AC car. Randomly selected vehicles made 288 trips (96 by each vehicle type) of more than one hour on four pre-arranged weekdays on typical sunny days, on the same road with minimal off-road air pollution. Ambient and in-vehicular particulate matter (PM) concentrations were measured using real time monitors, while being driven under the same conditions.
resultsThe average ambient PM
conclusionsCompared to other TMEs, drivers of three-wheeled taxis were most vulnerable to on-road air pollution. Redesigning such vehicles for safer cabin environment is recommended.
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