Definition:
Auto emissions are particles and gases that are introduced into the atmosphere by motor vehicles.
Facts:
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Hydrocarbons are produced from unburned and partially unburned fuel and are the main component of smog.
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Other pollutants present in vehicle exhaust include Carbon Monoxide, Nitrogen Oxide, and Sulfur Oxide.
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Smog and haze in highly populated areas are most concentrated during the warmest months of the year.
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Solid particles of soot and smoke that are formed will remain suspended and can be carried by wind currents long distances before settling.
Reactions:
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burning, itchy, watery eyes
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sore, dry, irritated throat
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coughing, wheezing
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shortness of breath
Particle Size:
Most range from 1-3 microns. Diesel particles specifically will range from 1-10 microns, but the majority of diesel emissions are below 2.5 microns.