Abstract
In many countries, road traffic is the most widespread sources of noise and it is most prevalent cause of annoyance. This study investigates noise levels for some roads (divided and undivided) starting from kafr El-Sheikh City as a case study. Also, the study purpose is to develop models, which could be applied for effective predicting of the noise levels. Using simple analysis, different models were derived to describe the relationship between the traffic characteristics as independent variables and noise level as a dependent variable. Multiple regression analysis was also utilized to take the combined effect of these variables on noise level into consideration. The analysis of the obtained results revealed that all recorded noise levels in all places of different roads are much more than the permissible limits according to the Egyptian law of environmental and world organizations limits. In addition, traffic volume and running speed increases the noise level. Whereas traffic volume only decreases the noise level in undivided roads
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