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A Case Study on the Characteristics of the Road Traffic Noise in Plant Communities  

Cho, Il-Hyoung (Institute of Strategy Environmental Research, Strategy Engineering Corporation)
Lee, Nae-Hyun (Department of Environmental Division, Strategy Engineering Corporation)
Cho, Jung-Sang (Department of Environmental Division, Strategy Engineering Corporation)
Ko, Jung-Yong (Department of Environmental Division, Strategy Engineering Corporation)
SunWoo, Young (Department of Environmental Engineering, Kon-kuk University)
Park, Young-Min (Korea Environmental Institute)
Publication Information
Journal of Korean Society of Environmental Engineers / v.28, no.12, 2006 , pp. 1293-1303 More about this Journal
Abstract
This paper represents a comparison the difference between existence and nonexistence of soundproof trees for road traffic noise. Also we suggested that the simple equation has been derived using a single regression analysis for predicting levels of $Leq_{th}$ at a given distance from a road in terms of the flow rate, the mean speed of the traffic, and the percentage of the type vehicles in the existence and nonexistence of soundproof trees. We classified a vehicle into four and analyzed contribution rate to traffic volume. As a result, the order showed as followed: light vehicle>medium vehicle>heavy vehicle>motorcycle. However, the results of analyzing contribution rate with between traffic volume and traffic noise by the each type showed as followed; Motorcycle>Light vehicle>Medium vehicle>Heavy vehicle. This study showed that the most a lof of traffic volumes of the three vehicles(light vehicle, medium vehicle and motorcycle) and heavy vehicle were existed in 67 km/h and 61 km/h of car speed, respectively. The total traffic noise to the mean car speed decreased because of the inflow a lot of traffic volumes between 2016 and 2388 in the range of 67 km/h of light vehicle speed, in traffic composition of 4.75% heavy vehicles, and 1.11% motorcycle. the final result for this study showed that statistical paired t-test for between existence and nonexistence of soundproof trees was significant(p<0.05) and the difference between daytime and night in the location of the nonexistence of plant communities with the independent sample T-test was significant(p<0.05). However, the independent sample T-test for analyzing the variance of traffic noise between daytime and night was not significant(p>0.05).
Keywords
Road Traffic Noise; Soundproof Trees; Contribution Rate; Vehicle Types; Car speed; Traffic Volume; Distance; Statistical Test;
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