The Commission for Air Quality Management (CAQM) has implemented Stage III of the Graded Response Action Plan (GRAP) in response to the escalating air pollution in Delhi. This stage includes restrictions on old diesel buses and BS-III and BS-IV cars. If any BS-Ill Petrol and BS-IV Diesel LMV (4 Wheeler) is found plying on roads will be prosecuted under Motor Vehicle Act, 1988, which provides a fine of Rs 20,000.