?VEHICULAR CONTRIBUTION TO ROAD TRAFFIC NOISE IN KARACHI CITY, Part I. Contribution by Motorcycles, Buses and Rickshaws

Abstract

Studies on road traffic noise carried out in Karachi city shows that the road traffic noise levels in the city are
very high and much beyond the acceptable limits.Therefore, in order to investigate the level of noise contributed by
different type of vehicles plying on the city roads and to assess their individual contribution to the high level traffic
noise, studies have been carried out on the noise emitted by four types of relatively noisier vehicles as they normally
move on the cityroads, The results are discussed with reference to Ly9O' LyS{) and LylO and present existing motor
vehicle rules in Pakistan.