<p>Particulate matter less than PM<sub>10</sub> and aromatic chemicals formed during incomplete combustion of organic matter are major environmental pollutants because of their toxic potential.
Pulmonary function abnormalities associated with exposure to automobile exhaust in a diesel bus garage and roads
<p>In Kolkata city the road transports are maintained by private and Government organization. A major work force belonged to the State Transport Corporation (KSTC), Government of West-Bengal. The pollution caused by these vehicles affects the workers health and caused different types of respiratory problems.