<span style="color: #222222;">Delhi government has imposed a ban on plying of BS-III petrol and BS-IV diesel four-wheelers in the city till the 9th of this month in view of restrictions put by the Centre's air quality panel under Stage III of the Graded Response Action Plan. <br />''<br />''Vehicles deployed in emergency services and government or election work have been exempted. The order said, if any BS-III petrol and BS-IV diesel four-wheeler are found plying on the roads, it will attract a fine of 20 thousand rupees. The subcommittee for the implementation of GRAP held a meeting yesterday to review the air quality scenario in the region.</span><br />