International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Application of an Emission Estimation Methodology to Reflect Microscale Road Driving Conditions

미시적 도로주행 조건을 반영한 배출량 산정 방법의 적용 사례 연구

  • 허혜정 (한국건설기술연구원 도로연구소) ;
  • 윤천주 (한국건설기술연구원 도로연구소, 서울시립대학교 교통공학과) ;
  • 양충헌 (한국건설기술연구원 도로연구소, 과학기술연합대학원대학교 교통물류 및 ITS공학과) ;
  • 김진국 (한국건설기술연구원 도로연구소)
  • Received : 2016.03.14
  • Accepted : 2016.05.18
  • Published : 2016.06.15
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Abstract

PURPOSES : This study proposes a methodology to collect data necessary for microlevel emission estimation, such as second-by-second speeds and road grades, and to accordingly estimate emissions. METHODS : To ease data collection for microlevel emission estimation, a vehicle equipped with speed- and location-recording instruments as well as equipment for measuring road geometry was used. As a case study, this vehicle and the proposed methodology were used on a 10-km-long highway in Yongin City, Korea. Emissions from the vehicle during driving were estimated in various microscale driving conditions. RESULTS : Differences in the estimated emission under different microscale driving conditions cannot be ignored. Compared with the estimations obtained when second-by-second data were not considered, CO and NOx emissions were more than threefold higher when considering second-by-second speed; similarly, CO and NOx emission estimations were higher by approximately 10% and 3%, respectively, when considering second-by-second road grade. CONCLUSIONS : The proposed method can estimate vehicle emissions under real-world driving conditions in such applications as road design and traffic policy assessments.

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