I.Overview of test Tested by : National Environment Research Institute(Noise and Vibration Department) Date of test : '99. 9. 20 Location : Buyongri area Yanggang-Myun Youngdong Kun Chungbuk(National Highway No.19) II.Outcome of measure Measure 1M of road end ¨çComparison of equivalent noise level (Leq) Category Ecophalt Pavement Conventional Pavement Difference in Noise Leq. 5m 63.4 67.6 4.2 Leq. 5m 64.8 69.2 4.4 Leq. 10m 66.6 70.7 4.1 Leq. 30m 67.9 71.3 3.4 Leq. 1h 68.1 71.6 3.5 ¨èComparison of Lmax by type of vehicle Category Ecophalt Pavement Conventional Pavement Average noise difference Number of sample Lmax 67.8~90.2 72.6~93.5 3.3 13 Measure 7.5M road end ¨çComparison of equivalent noise level (Leq) Category Ecophalt Pavement Conventional Pavement Difference in Noise Leq. 5m 61.8 66.1 4.3 Leq. 10m 60.7 65.0 4.3 Leq. 30m 63.8 65.3 1.5 Leq. 1hr 62.5 65.2 2.7 ¨èComparison of Lmax by type of vehicle Category Ecophalt Pavement Conventional Pavement Average noise difference Number of sample Lmax 69.8~90.2 72.6~93.5 3.3 13 Condition of measure ¨çTraffic volume per hour - small vehicle :about 378 -large vehicle : about 57 ¨èSpeed of vehicle - average 67.6km/h ¨éComparison of maximum noise level (Lmax) Category Ecophalt Pavement Conventional Pavement Average noise difference Number of sample Lmax 69.8~90.2 72.6~93.5 3.3 13 Measure of 7.m road end ¨çComparison of equivalent noise level (Leq) Category Ecophalt Pavement Conventional Pavement Difference in Noise Leq. 5m 61.8 66.1 4.3 Leq. 10m 60.7 65.0 4.3 Leq. 30m 63.8 65.3 1.5 Leq. 1hr 62.5 65.2 2.7 ¨èComparison of maximum noise level (Lmax) Category Ecophalt Pavement Conventional Pavement Average noise difference Number of sample Lmax 69.8~90.2 72.6~93.5 3.3 25