Politicians'+contradictory+perspectives+on+the+sources+of+ pollution+in+Tehran

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1- General director of Tehran Province Environmental Protection Bureau : More than 80 percent of pollution in Tehran is due to vehicles.

2- of the Environmental Protection Agency’s office of Air pollution: Two factors are causing air pollution: first, atmospheric conditions and natural reasons and the other one is human conditions and pollutant sources. According to him, to understand these factors the roots of the problems should be recognized. One of these roots is of poor quality fuel. The second root is old cars commuting across the city which based on statistics, there are about three and half million old automobiles across the city. Almost more than half of these vehicles are lacking the necessary standards. These vehicles should not be phased, they just lack necessary standards, and the third root is upgrading the standards of the new vehicles. The production of new vehicles should reach level four of Euro Standard but it has remained in the Euro 2 standard. The next issue is that around one million and 800 hundred thousands vehicles are travelling across Tehran while Tehran’s capacity is 600 hundred thousand vehicles which means 6 times more than Tehran’s capacity.

3- CEO of air pollution control air quality:In a city like Tehran, almost around95 percent of air pollution is because of monoxide carbon emission from vehicles, in general we can claim that 80 percent of Tehran’s air pollution is because of vehicles.