Résumé
To examine the subjects who are more prone to traffic noise exposure such as auto rickshaw drivers, traffic constables and shop keepers in central business area in Karachi [Pakistan]. This was hospital based prospective study comprising of 200 subjects. The results were obtained by testing the subjects which were investigated on the basis of interviews by [a] completing performa [b] Pure tone audiometry [PTA]. Correlation between traffic NIHL and occupation was found statistically significant with P<0.001 distributed as 15 [34.1%] in auto rickshaw drivers, 34 [40%] in shopkeepers and 29 [34.1%] in traffic constables. The fact that road traffic is the most significant source of noise pollution in Karachi was established by investigating our subjects. They had significant degree of hearing impairment i.e. 42%