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The health and environmental impact of transport is significant because transport burns most of the world's petroleum.This causes illness and deaths from air pollution, including nitrous oxides and particulates, and is a significant cause of climate change through emission of carbon dioxide.
Mobile source air pollution includes any air pollution emitted by motor vehicles, airplanes, locomotives, and other engines and equipment that can be moved from one location to another. Many of these pollutants contribute to environmental degradation and have negative effects on human health.
80% of air pollution in Tehran is due to cars; the remaining 20% is due to factories and industry emissions.. Iran is one of the world's largest and most densely populated countries, spanning an area of approximately 1.7 million sq. km and a population of 91.5 million.
Use of cars for transportation creates barriers by reducing the landscape required for walking and cycling. It may look like a minor problem initially but in the long run, it poses a threat to children and the elderly. Transport is a major land use, leaving less land available for other purposes. Cars also contribute to pollution of air and water.
Additionally, as car tires wear down, they shed the materials they are made of into the air as particulate pollution. [10] Those pollutants are known to cause various respiratory and other health issues and cars are among the leading cause of smog in modern developed world cities. External costs which can arise from using cars and trucks in ...
Throughout the 1950s and 1960s, various federal, state and local governments in the United States conducted studies into the numerous sources of air pollution. These studies ultimately attributed a significant portion of air pollution to the automobile, and concluded air pollution is not bounded by local political boundaries.
According to local officials, 3,600 people died in a single month due to the hazardous air quality. [2] 80% of the city's pollution is due to cars. [3] The remaining 20% is due to industrial pollution. Other estimates suggest that motorcycles alone account for 30% of air and 50% of sound pollution in Tehran. [4]
Air pollution has been associated with increased hospitalization and mortality and COPD (chronic obstructive pulmonary disease). [155] COPD is a common disease which causes breathing difficulties and is the fourth-largest cause of death globally. [156] Almost half of COPD deaths are due to air pollution. [151]