PURPOSES : The purpose of this study is to estimate the reduction of traffic noise in a double-layered specific porous pavement based on the traffic speed variation.
METHODS : The close-proximity method was used in noise measurement, and the running speed was measured at 10 km/h and from 50 to 80 km/h.
RESULTS : From the quantitative analysis, it was found that the double-layered porous pavement reduced by 9.4 dB (A) on the average and 9.16 dB (A) at a 95% confidence level.
CONCLUSIONS : The use of porous pavements have been recommended to minimize traffic noise. In this study, it is quantitatively demonstrated that the double-layered porous pavement can reduce the traffic noise by more than 9.0 dB(A).

ABSTRACT
1. 서론
    1.1. 도로교통소음
    1.2. 도로교통소음대책
    1.3. 연구목적 및 방법
2. 문헌연구 고찰
    2.1. 도로교통 소음연구의 구분
    2.2. 도로교통소음의 측정
    2.3. 도로교통소음의 예측식 개발
    2.4. 저소음포장의 경제성분석
    2.5. 문헌연구요약
3. 측정 대상 구간 및 측정 방법
    3.1. 대상구간
    3.2. 도로 교통소음 측정방법
    3.3. 측정결과
4. 소음 측정결과의 분석
    4.1. 기술 분석
    4.2. 분산분석
    4.3. 평균분석
    4.4. 상관분석
5. 결론
REFERENCES

• 유인균(한국건설기술연구원) | Yoo In Kyoon (Research Fellow Korea Institute of Civil Engineering and Building Technology) 교신저자
• 이수형(한국건설기술연구원) | Lee Soo Hyoung
• 한대석(한국건설기술연구원) | Han Dae Seok