Hyderabad, July 21: Air pollution levels in the city are shooting up rapidly because of the exponential rise in the number of vehicles. "On an average, 600 new vehicles are entering our roads every day," said a senior transport official. This has been causing the air pollution to go beyond acceptable levels. For instance, the total suspended particulate matter (TSPM) in the air should be 200 milligram per cubic metre but the average value being recorded in the twin cities is 280 milligram per cubic metre.