Abstract
This paper aims to study the on-going problem of traffic generated noise pollution, focusing on the influence of speed breakers on specific areas of the noise spectrum. We studied different types of speed breakers around the metropolitan area of Cluj-Napoca, measuring a sound spectrum from 20 Hz to 20 kHz. Speed breakers have an extensive use all over the world as safety measures near parks, schools, residential areas, but the question to answer is whether they also contribute to the increase in noise pollution and to what measure this contribution is. The study considers the different types of speed breakers used in the metropolitan area and the degree of usage the speed breakers have.