Abstract
The continuous monitoring of environmental noise levels is deemed necessary, such in the strategic noise mapping or in the cohort studies. The environmental noise levels can be measured and analysed with the aid of various methods. In this article presents the method recommended by the European Union (EU). The data contain the road traffic noise level measurements in the Greater Thessaloniki area, Greece. The L(eq) noise measurements carried out at two different locations, the Urban Highway-Hot Spot area and the Residential area, for a 3 year measurement period. Also, the analysis was based on the environmental noise indicators L(day), L(den), L(evening), L(night).