The Centre has asked all metro rail corporations to install retrofitted devices in diesel generators being used by them, a move aimed at reducingparticulate matter emissions from DG sets.
In a letter to the corporations, the union housing and urban affairs (HUA) ministry said that according to National Clean Air Programme (NCAP), DG sets contribute 7-18 per cent to the ambient air pollution in non-attainment cities.
Non-attainment cities are areas with air quality worse than the National Ambient Air Quality (NAAQ) Standards.
There are several metro rail corporations, including Delhi Metro, Chennai Metro and Bengaluru Metro
Disclaimer: No Business Standard Journalist was involved in creation of this content