Abstract

교통 소음비용은 피해비용 접근법 또는 회피비용 접근법으로 평가할 수 있다. 본 연구는 피해비용 접근법을 바탕으로 소음의 외부비용을 산정하는 방안을 제시하였다. 이를 위하여 네 가지를 검토하였다. 첫째, 한국의 실정에 맞는 소음피해 비용 원단위 41,737-601,910 원/(인 년)를 도출하였다. 둘째, 소음도 예측식을 이용하여 소음 영향권을 설정하였다. 셋째, 소음 영향권 내에서 소음에 노출된 인구와 실제 피해인구 비율의 곱으로 소음피해 인구를 추산하였다. 마지막으로 소음의 피해비용을 산출하는 과정을 간소하게 하는 소음 피해비용과 소음도간 관계식을 제시하였다. 이를 바탕으로 피해비용 접근법과 회피비용 접근법으로 소음저감 편익을 산출하고 비교함으로써 피해비용 접근법이 회피비용 접근법보다 이론적 정합성과 정책적 신뢰성이 높은 방법론임을 확인하였다. Traffic noise cost can be assessed either by the damage cost approach or by the avoidance cost method. This paper provides an overview of pertinent studies of these two approaches and shows that the damage cost approach is more universal and reliable than the avoidance cost counterpart. This study then investigated three sub-components to address the damage cost framework. First of all, unit value per person exposed to noise per year was calculated. Secondly, the area exposed to noise was determined using noise prediction equation. Thirdly, the number of people affected by noise was computed by multiplying the number of people exposed to noise with the percentage of people affected by noise. This paper also suggested a simplified equation that represents the relationship between damage costs and noise levels. Finally, the benefits of noise reduction derived from the damage cost method and those from the avoidance cost approach were compared and discussed.

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