of daily increase in city population and need to more space and changes in land use for better services. Tehran district 2 is limited to Alborz Mountains in north, districts 1, 3, 6 in east, districts 9, 10, 11 in south and district 5 in west. Main city air pollutants are presented in table below: Table- city air pollutants due to transportation. Drivers should be required to pay a congestion fee for it will force people into using public transport more often than private cars.
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Source of this pollution is vehicles. Today, world is talking about bi-fuel, battery and solar automobiles, which make lesser pollution. This throng results in waste of many hours by citizens and millions of liters fuel too. Another way of air pollution reducing is also to promote the use of public transportation systems, which make lesser pollution per passenger, in comparison to personal vehicles. Can be seen as the brown haze dome above or plume downwind of cities. Minor air pollutants include: * A large number of minor hazardous air pollutants.
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