Noise Evaluation of Traffic Flows and Its Effect to Concentration Capability of the Students in One of Private School in Surabaya

This paper discuss about environment noise, which happened in the middle of everyone's life, generally built by the industrial activity, trains, airplanes, and the highway traffic. But now, the highway traffic is the main of noise maker. That's happen because the noise from the highway make a comprehensive impact, instead of the others that just make a local impact, or just make an effect for some areas. Human, both of which have an activity outside or inside the building of some areas that near to the highway are potentially become a victim of noise effect. One of private school in Surabaya, Indonesia is so disturbed by the noise of the traffic flow. The school is directly facing the highway that makes a high level of noise. The noise that made by the flow of the traffic reaches 87 dBA, even though according to the standard noise level, the noise should be lower than 55 dBA for the school. Noise will decrease the capability of hearing and make a decrease in concentration of learning for the children. The value of NC (Noise Criteria) in the school parking area reaches 78 dBA, whereas in the area of the school, NC reaches 70 dBA. In this case, research focus in the room near the traffic flows. The students will be analyzed by doing the speech intelligibility test of phonetically balanced word. This test was conducted to determine the percentage of the students' clarity level of hearing.