STUDY OF THE NOISE POLLUTION IN DIFFERENT MODES OF TRANSPORTATION SECTOR USING RPN CRITERIA IN TEHRAN

Noise Pollution in big cities is caused by numerous factors that each factor has a specific role in creating ecologic problems. Risk evaluation is the general process of evaluating the risk rate and decision about its acceptability. This analysis is an attempt to study the noise pollution with use of measurement index (Risk priority number) ofeffective factors causing noise pollution in Rah Ahansquare in Tehran. In this case, with considering different modes of transportation in the studied area and use of Risk priority number, the noise produced by vehicles included the highest index and this result shows the highest sources of noise in the studied area, are the vehicles.