서울시 녹색교통지역 내 차량등급제 정책 계도기간 운영에 따른 미세먼지 및 대기오염물질 저감 효과

Pilot Operation of Vehicle Rating System in Seoul’s Green Transportation Zone and the Reduction of Particulate Matter and Air Pollution Levels

The purpose of this study is to analyze the effects of reducing particulate matter (PM) and air pollution levels by the pilot operation of vehicle rating system which was recently implemented in the Green Transportation Zone of Seoul. Differences-in-difference models are used as to analyze the reduction effect. PM and air pollution data are used as dependent variables; and meteorological, traffic, calendar day data as control variables. According to model, PM10 levels decreased by 2.357㎍ /m³ and PM2.5 by 1.8㎍/m³ during the pilot operation. Also, NO2 levels went down by 0.00755ppm. Findings of this study confirms that limiting vehicles that discharge air pollutants in the city helps keep PM and air pollution levels lower. The accomplishments in the pilot operation may provide positive expectations towards the actual operation of the policy.