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도시고속도로 기본구간의 서비스수준별 중차량 영향 분석

The Analysis of the Impact of Heavy Vehicles in Urban Freeway Basic Section

  • Kim, Tae-Heon (Department of Urban Planning & Engineering, Yonsei University) ;
  • Roh, Chang-Gyun (Department of Urban Planning & Engineering, Yonsei University) ;
  • Son, Bong-Soo (Department of Urban Planning & Engineering, Yonsei University)
  • 투고 : 2010.11.26
  • 심사 : 2012.02.18
  • 발행 : 2012.02.28

초록

동일한 수의 중차량 비율이 도로 용량에 미치는 영향이 고속도로 소통상태가 원활한 서비스수준 A와 그렇지 않은 서비스수준 E의 경우에 따라 같지 않음이 지적되고 있다. 우리나라 고속도로 용량산정 방법 역시 고속도로 운영 상태를 고려하지 않으며 중(重)차량 영향을 반영하고 있다. 본 연구는 고속도로 소통 상태별 중차량 비율이 도로 용량에 미치는 수준을 기초 시험 수준에서 진단한다. 서울 동부간선도로에서 총 15일 (360시간) 자료를 수집하였으며 이를 15분단위로 가공하여 분석하였다. 중차량 비율이 용량에 미치는 영향을 각 서비스수준별로 분석한 결과, 현재의 용량산정방법은 서비스수준 B~C에서 용량이 과소 추정되고, 서비스수준 E에서는 용량이 과대 추정되는 것을 확인하였다. 연구 결과는 현재의 도로용량편람에서 제시한 방안과는 달리 고속도로 소통상태를 반영하여 중차량 보정계수가 적용되어야 함을 의미한다.

This study is to find a shortcoming embedded in the current Korean Highway Capacity Manual (KHCM) on reflecting a heavy vehicle effect to the highway capacity. The KHCM suggests to handle the percent heavy vehicle to deal with its effect to a capacity regardless of density levels. Authors hypothesized in this study that the effect of heavy vehicles would vary at different levels of traffic density - the effect would be comparably insignificant when a density is low and it becomes comparably significant when it becomes high. Field data from a freeways located in Seoul were collected for 360 hours (15 days) and categorized them into a set of operation conditions grouped by 15 minutes and by the LOS density levels. Comparison between the field measured and the estimated by the KHCM method showed that the KHCM method overestimated the effect of heavy vehicles in LOS B and C but underestimated in LOS E. The results suggested that there be a difference pattern from the one the KHCM expected and brought discussion on further studies.

키워드

참고문헌

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