A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway IndustryShahiron Shahidan, Nurul Izzati Raihan Ramzi Hannan, Mohamad Zulkhairi Md Maarof, Alif Syazani Leman and Mohamad Syamir SeninMATEC Web Conf., 87 (2017) 01007DOI: https://doi.org/10.1051/matecconf/20178701007