India, Dec. 18 -- The Delhi government has unveiled an expansive plan to tackle air pollution in the capital, announcing a series of measures that include a complete overhaul of the pollution under control (PUC) certification system, the launch of a Delhi-only carpooling application, and the identification of the city's worst traffic congestion points. The initiatives, to be rolled out over the coming months, were outlined by environment minister Manjinder Singh Sirsa at a press conference on Wednesday.

Sirsa said the government's strategy would focus on four major sources of pollution - vehicles, industries, solid waste and dust - and warned that Delhi could face another severe pollution spell in the second half of December, based on hi...