New Delhi: The central government on Tuesday urged the Supreme Court to relax its ban on diesel taxis in Delhi and the National Capital Region as it was adversely affecting the foreign exchange-earning BPOs which use these vehicles to ferry their employees.

Seeking modification of the apex court's April 30 order, Solicitor General Ranjit Kumar told the bench of Chief Justice T.S. Thakur and Justice R. Banumathi that it was not possible for the BPOs to deploy CNG buses as the locations of the staff, many among them women, varied widely.