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Taipei City Goverment

City News

Air Quality at MRT Stations Meets Code Standards

Air Quality at MRT Stations Meets Code StandardsIn response to public concern over the air quality inside underground MRT stations, Taipei Rapid Transit Corporation (TRTC) ensured compliance with Environmental Protection Administration (EPA) recommended standards for indoor air quality. The company assures the public that it is safe to travel on MRT.
Under EPA regulations, three indoor air quality parameters—carbon dioxide, carbon monoxide, and formaldehyde—have to be monitored and kept under a safety limit at MRT stations. According to TRTC, measurements of the three key pollutants have been conducted and found to comply with set standards.
Although PM10 and PM2.5 concentrations are not required for monitoring at MRT stations, TRTC took the extra efforts to keep their levels down and conducted tests to keep them tracked. According to TRTC, MRT commuters’ exposure to PM2.5 is 21.9μg/m3, lower than 22.1μg/m3, the average traffic-related PM2.5 exposure in urban Taipei. The company encourages the public to travel more on the MRT, citing the higher risk from other means, including 32.1μg/m3 PM2.5 exposure on motorcycles and 23.5μg/m3 on buses.
On the issue of the temporary rise in the concentration of PM2.5 detected during the closing and opening of passenger car doors, TRTC noted the abrupt rise is due to the motion of passenger cars, adding that commuters’ exposure level to the pollutant is negligible.
TRTC stressed that it will continue to focus on improving air quality in the MRT network by consulting professional advice and international practices.
For more information, please call the 24-hour customer service hotline (02-218-12345) or visit its website https://www.metro.taipei/ (Chinese). For callers in Taipei City, dial 1999 for Taipei City Citizen Hotline. For those calling from outside Taipei City, please dial (02) 2720-8889.