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University of Pardubice Jan Perner Transport Faculty Transport and ...

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Figure 17: Greenhouse gas effect<br />

Source: [50]<br />

3.3.2 Air pollution<br />

Pollution is created from incomplete carbon reactions, unburned hydrocarbons or other elements<br />

present in the fuel or air during combustion. These processes produce pollutants <strong>of</strong> various<br />

species, including carbon monoxide, soot, various gaseous <strong>and</strong> liquid vapour hydrocarbons,<br />

oxides <strong>of</strong> sulphur <strong>and</strong> nitrogen, sulphate <strong>and</strong> nitrate particulates, ash <strong>and</strong> lead. These primary<br />

pollutants can, in turn, react in the atmosphere to form ozone, secondary particulates, <strong>and</strong> other<br />

damaging secondary pollutants. Combustion also produces carbon dioxide, the primary<br />

greenhouse gas. 54<br />

<strong>Transport</strong> is one <strong>of</strong> the main sources <strong>of</strong> air pollution, for which evidence on direct effects on<br />

mortality as well as on respiratory <strong>and</strong> cardiovascular disease is firmly established. About 100<br />

54 <strong>Transport</strong> <strong>and</strong> sustainability [online]. 2009 [cit.2012.05.19]. Found from:<br />

http://people.h<strong>of</strong>stra.edu/geotrans/eng/ch6en/conc6en/ch6c4en.html<br />

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