More public transport buses hold the key to blue skies

As per TERI's 2016 source apportionment study, among key sectors, industries contributed 30 per cent, closely followed by transport with 28 per cent contribution to PM2.5 concentration in Delhi (in winter, when the smog is much severe ). Within the transport sector, 29 per cent of these emissions are contributed by trucks, 25 per cent by two-wheelers, 18 per cent by three-wheelers and 11 per cent by buses and cars. It is the trucks, two-wheelers, and three-wheelers that demand attention from pollution perspective.