Delhi Traffic Police has issued around 550 challans, imposing a total fine of over Rs one crore, to BS III petrol and BS IV diesel vehicles on Friday on the first day of the ban on these vehicles under the Graded Response Action Plan (GRAP) III in the national capital, officials said. According to police, they have also issued challans to 4,855 vehicles imposing a total of Rs 4.8 crore in fines for not having Pollution Under Control Certificates (PUCC) in the national capital on Friday. A fine of Rs 10,000 is imposed on motorists for not having a valid pollution under control (PUC) certificate. These challans get released from courts. Private BS III petrol and BS IV diesel vehicles were banned from roads with violations inviting a penalty of Rs 20,000. Diesel and petrol inter-state buses from the NCR cities to Delhi are also banned. A senior police officer said that they have issued a total of 293 challans for BS-III and BS-IV vehicles in the eastern, central and northern ranges of