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강설에 따른 고속도로 용량 변화에 관한 연구

A Study on Highway Capacity Variation According to Snowfall Intensity

  • Son, Young Tae (Department of Transportation Engineering, Myongji University) ;
  • Lee, Sang Hwa (Department of Transportation Engineering, Myongji University) ;
  • Im, Ji Hee (Graduate School of Urban Studies, Hanyang University)
  • 투고 : 2013.03.26
  • 심사 : 2013.12.16
  • 발행 : 2013.12.31

초록

본 연구는 악천후가 교통 흐름에 영향을 미칠 것이라는 전제하에 악천후 상황 중 강설에 따른 고속도로 교통류 특성 변화 중에서도 용량 및 속도 변화에 초점을 맞춰 분석하기 위한 것으로, 자료수집과 통계분석을 통해 연구를 진행하였다. 교통류 특성 변화를 설명하는 요소로 교통량, 속도, 밀도를 선정하여 분석하였으며, 자료수집 대상은 경기도권내 3개 기상관측소 인근 4개 고속도로 7개 기본구간을 조사지점으로 선정하였다. 강설수준별 용량 변화를 분석하기 위해 강설수준을 3단계(Light, Medium, Heavy Snow)로 분류하였다. 분석결과 강설수준에 따른 용량 변화를 살펴보면, 기후 양호시 대비 Light Snow(약한 눈)인 경우 13.2% 감소하였으며, Medium Snow(보통 눈)은 18.6%, Heavy Snow(강한 눈)은 32.0% 감소하는 것으로 나타나 강설수준이 높아질수록 용량 감소율은 증가하는 것으로 분석되었다. 기상악화는 도로의 운영 효율을 저하시키는 요인으로 작용할 가능성이 매우 큰 것으로 나타났으며, 이에 따라 향후 이를 고려한 도로 설계 및 운영 방법이 제시되어야 한다.

Under the consumption of bad weather situation affects traffic flows, the study scope is focused on highway capacity and speed variations among other highway traffic flow characteristic changes according to snowfall density. Thus, this study carried out through the data collection and statistical analysis by focusing on capacity and speed changes. Traffic volume, speed and density were selected as factors to explain the property change of a traffic flow for analysis, and 7 basic sections such as 3 highways in Gyeonggi-do and 4 highways near the meteorological observatory were selected as survey points for data collection. Snowfall levels were classified into 3 steps(Light, Medium, Heavy Snow) to analyze the capacity change by snowfall levels. As a result of analysis, the change of capacity depending on snowfall levels decreased 13.2% in case of light snow compared to a good weather, 18.6% in case of medium snow and 32.0% in case of heavy snow, so the capacity reduction rate increased as the snowfall level increased. The worsening weather appeared to have a very big possibility to act as a factor to reduce the operational efficiency of a road, so a road design and operation method considering this should be presented in the future.

키워드

참고문헌

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피인용 문헌

  1. Economic Loss Assessment caused by Heavy Snowfall : Using Traffic Demand Model and Inoperability I-O Model vol.53, pp.6, 2013, https://doi.org/10.17208/jkpa.2018.11.53.6.117