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논문 기본 정보

자료유형
학술저널
저자정보
백연주 (서울대학교) 김다울 (서울대학교) 권혜영 (목원대학교) 김영국 (한국교통연구원) 김선영 (국립암센터)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제34권 제4호
발행연도
2018.8
수록면
542 - 553 (12page)
DOI
10.5572/KOSAE.2018.34.4.542

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Since many previous studies reported the health effect of air pollution and indicated traffic as a major pollution source, significant policy efforts have been made to control traffic to reduce air pollution. However, there have been few studies that evaluated such policy implementation. In Seoul, Korea, the exclusive median bus lane system was implemented in 2004, and the metropolitan government applied air pollution reduction policies such as conversion of diesel buses to compressed natural gas buses and installation of emission control devices. This paper aimed to investigate the impact of the exclusive median bus lane system on air pollution reduction. Using hourly concentrations of particulate matter (PM<SUB>10</SUB>) and nitrogen dioxide (NO₂) measured at 131 regulatory monitoring sites in Seoul and Gyeonggi-do for 2001-2014, we calculated annual and daily average concentrations at each site. We assessed the impact of the policy using differences-in-differences analysis by annual and daily average models after adjusting for geographic and/or meteorological variables. This method divides population into treatment and control groups with and without policy application, and compares the difference between the two time periods before and after the policy implementation in the treatment group with the difference in the control group. We classified all monitoring sites into treatment and control groups using two definitions: 1) Seoul vs. Gyeonggi-do; 2) within vs. outside 300 meters from the median bus lane. Pre- and post-policy periods were defined as 2001-2005 and 2006-2014, and 2004 and 2014 in the annual and daily models, respectively. The decrease in PM<SUB>10</SUB> concentrations between the two periods across monitoring sites in the treatment group was larger by 1.73-5.88 μg/m3 than in the control group. NO₂ also showed the decrease without statistical significance. Our findings suggest that an efficient public transport policy combined with pollution abatement policies can contribute to reduction in air pollution.

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Abstract
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2. 자료 및 분석방법
3. 결과
4. 고찰 및 결론
References

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UCI(KEPA) : I410-ECN-0101-2018-539-003413680