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Improvement of the Emission model Based on Average Speeds in the Transportation Sector

평균차속을 이용한 교통부문 온실가스 배출량 산출 모형의 보완방향

  • Kim, Young-Ho (Dept. of Transportation Strategic Planning, The Korea Transportation Institute) ;
  • Hong, Sung-Jin (Dept. of Transportation Strategic Planning, The Korea Transportation Institute) ;
  • Lee, Tae-Woo (Transportation Pollution Rearch Cnter, National Institute of Environmental Research) ;
  • Park, Jun-Hong (Transportation Pollution Rearch Cnter, National Institute of Environmental Research)
  • 김영호 (한국교통연구원 국가교통전략기획본부) ;
  • 홍성진 (한국교통연구원 국가교통전략기획본부) ;
  • 이태우 (국립환경과학원 교통환경연구소) ;
  • 박준홍 (국립환경과학원 교통환경연구소)
  • Received : 2012.01.05
  • Accepted : 2012.03.19
  • Published : 2012.04.30

Abstract

The transportation sector accounts for 33% of the total $CO_2$ emissions. Effective control measures for reducing $CO_2$ emissions are urgently needed to address global warming. Objective and reliable methods to estimate $CO_2$ emissions are a prerequisite for the implementation of such effective control measures. However, existing models have not been successful. Even though the average-speed model is one of the most convenient and useful methods for estimating $CO_2$ emissions, it cannot distinguish between a variety of roads as well as traffic conditions in the model. The results of this study found that there may be significant discrepancies between emissions estimated by the current average-speed model and those measured in real driving conditions. This paper proposed the subdivision of emission factors in the average-speed model depending on both traffic and road conditions.

교통부문에서 발생되는 $CO_2$ 배출량이 전체 $CO_2$ 배출 총량의 33%를 차지하고 있는 상황에서 지구 온난화를 방지할 수 있도록 교통부문 온실가스 저감 대책을 마련하는 것은 매우 중요하다. 효과적인 교통부문 온실가스 저감대책을 수립하기 위하여 자동차의 오염물질 배출량을 객관적이고 정확하게 산출할 수 있는 방법론 개발이 선행되어야 하지만, 현재까지 표준화된 교통부문 오염물질 배출량 산출 방법론이 정립되어 있지 못한 실정이다. 세계적으로 가장 널리 사용되고 있는 평균 차속 모형은 빠르고 간편하게 대기오염 영향을 산출할 수 있다는 장점을 갖지만, 다양한 도로조건과 교통조건을 반영하지 못하는 한계가 있다. 본 논문에서는 현행 평균 차속 모형을 통하여 산출된 배출량이 주행 여건에 따라 현실에서 발생하는 배출량과 많은 차이가 있음을 실제 데이터 분석을 통하여 확인하였으며, 향후에는 평균 차속 모형의 배출계수가 도로 유형과 교통 상황에 따라 구분될 필요가 있음을 제기하였다.

Keywords

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