Resumen de The impact of multi-lane traffic flow distribution on road noise variability

Rufin Makarewicz, Roman Golebiewski

• The A-weighted equivalent sound level, LAeqT, is commonly used for road traffic noise assessment, where the time interval T equals a few minutes, hours, days, evenings or nights. Fluctuations in traffic flow, vehicle speed and vehicle generation parameter account for differences between measured values of LAeqT. It is shown that the standard deviation of LAeqT depends not only on variations of these parameters, but also on the flow distribution along road lanes. The proposed method enables calculation of the standard deviation when a road consists of a few lanes and when the statistical characteristics of all parameters are known.