New Delhi, Nov. 11 -- The Supreme Court has sought details from Delhi and three neighbouring states on the steps being taken to prevent over-age and non-compliant vehicles from entering and operating in the National Capital Region (NCR), expressing concern over the rising contribution of vehicular emissions to air pollution.

The governments of Delhi, Uttar Pradesh, Haryana and Rajasthan, along with the Municipal Corporation of Delhi (MCD) and Delhi Police, have been directed to file their responses within two weeks. They must provide details of the enforcement measures already in place, as well as additional short-term and long-term strategies to tackle vehicular pollution.

A bench comprising Chief Justice Surya Kant and Justices Joymal...