Despite the cost of noise reduction is growing every year, excessive noise is one of the most pressing problems in the workplace and in community. There is a growing number of complaints about the negative impacts of noise is registered. Noise barriers are widely used for transport and occupational noise reduction. Main noise barrier parameters are studied in order to increase barrier insertion loss. In situ noise reduction and sound absorption are investigated and discussed. Experimental results of noise barriers insertion loss are also presented. Durability of noise barriers made from different materials are discussed.
