Passengers on diesel-powered buses in Mexico City breathe five times more pollution than those using electric buses [1].
The findings highlight a significant disparity in air quality for commuters, suggesting that the transition to electric fleets is a critical public health necessity. Reducing exposure to diesel emissions can lower the risk of respiratory illnesses for millions of daily transit users.
The data was released June 5 to coincide with World Environment Day [2]. The study focused on the immediate environment of passengers in Mexico City, Mexico, where public transport remains a primary mode of movement for the population [2].
According to the research, passengers in diesel buses are exposed to five times more pollutants than those on electric-bus alternatives [1]. This gap in air quality underscores the impact of internal combustion engines on the immediate breathing zone of passengers, an area often overlooked in general city-wide pollution metrics.
Advocates for the transition to electric transport said the results serve as a catalyst for policy changes. The goal is to encourage a shift toward electric public transport to protect the health of the city's residents [2].
Mexico City has struggled with air quality for decades. While the city has introduced electric options, many routes still rely on older diesel technology. The current study provides a direct comparison of the passenger experience, moving the conversation from general atmospheric pollution to the specific health risks faced by the commuting public [2].
“Passengers in diesel buses breathe five times more pollution than passengers in electric buses.”
This study shifts the focus of urban pollution from general smog to the 'micro-environment' of the commuter. By quantifying the specific risk to passengers, the data provides a health-based argument for the electrification of public transit that goes beyond carbon emissions, targeting the immediate reduction of respiratory hazards for the working population in Mexico City.
