The physical study of noise pollution cause by vehicles: For the case studies Wongsawang intersection and Rama VII intersection

Abstract

The study noise pollutions at Wongsawang intersection and Rama VII intersection. According Pollution Control Department (PCD) methods. General sound level measurement used for this research and calculate the Leq24br' Using the 5-day measurement period. For the result. The Sound level at Wongsawang intersection were exceeding the standard 70 dBA every day. The peak of Leq24br was 80.9 dBA. According the result of PCD. The Sound level at Rama VII intersection were exceeding 2'days. Traffic density was a factor that affects the sound level. In addition the maximum sound level (Lmax) of all the measurements were not exceed 115 dBA