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A Study on Arterial Road Network Improvement Based on Networking Analysis

Networking 기반의 간선도로의 망기능 분석방법론 연구

  • Jung, Kabchae (Dept. of Transportation System Research, The Seoul Institute) ;
  • Kang, Kyeong Pyo (Division for Future Transport & Strategy Planning, The Korea Transport Institute) ;
  • Kim, Jung Wan (ITS & Road Environment Division, Ministry of Land Transport and Maritime Affairs)
  • 정갑채 (서울연구원 교통시스템연구실) ;
  • 강경표 (한국교통연구원 국가교통미래전략본부) ;
  • 김정완 (국토해양부 첨단도로환경과)
  • Received : 2012.05.04
  • Accepted : 2013.01.21
  • Published : 2013.02.28

Abstract

The present study proposed a methodology to analyze the networking efficiency of arterial road networks. The methodology was motivated to design three-dimensional networks and to analyze the networking ability quantitatively, which is a novel approach compared to existing methods depending on the two-dimensional network definition and the qualitative analysis for improving arterial road networks. The method considered the interdependence between high-level freeways and low-level highways, the ITS-based information for traffic and road conditions, and the physical networking. These three factors were quantified by a networking index (NI), and the networking efficiency was measured by a networking rate (NR). The present study proved that the networking efficiency (NR) was influenced by travel information sharing (i.e., ITS) and physical factors. This supports the fact that the integrated improvements of physical and ITS factors are necessary for an arterial road. The proposed method was applied for an actual arterial road network. It was found that the nation-wide NR was higher than that for the metropolitan area, which might be due to the difficulty in switching between high- and low-level networks and the lack of ITS functions in the metropolitan area.

본 연구는 기존 정성적/평면적으로만 다뤄왔던 간선도로의 망기능을 입체적/정량적으로 분석하기 위하여 새롭게 정의한 네트워크(network)과 네트워킹(networking)에 입각한 망기능 분석방법론을 제시하고, 실제 간선도로망에 적용하여 망기능을 분석하였다. 이를 위해 간선도로 네트워크를 상부도로인 고속국도와 이와 연계된 하부도로(일반국도, 지방도, 도시부도로 등) 간을 입체적 관점에서 분석하였고, 기존의 물리적인 연결성 측면 외에도 교통정보 및 주행조건 등 운전자(이용자) 측면의 망기능을 고려한 세부기능지표(networking index, NI)를 도출하여, 망기능의 효율성을 정량적으로 평가할 수 있는 네트워킹 지수(networking rate, NR)를 산정하였다. 주요 분석결과로서, ITS 분야인 교통정보기능이 네트워킹 구성요소에 중요한 영향요소임을 입증하였다. 이는 기존에 물리적 연계 중심의 도로정비방안 도출보다 교통정보를 고려한 네트워킹 정비의 필요성을 보여준다. 그리고, 실제 고속국도 중심 간선도로 망기능을 분석한 결과로서 전국대비 수도권에서 낮은 망기능을 보이고 있는데, 상 하부도로 간 대체우회기능을 수행할 수 있는 구간기능과 교통정보기능이 상대적으로 떨어지는 것이 주요 원인으로 분석되었다.

Keywords

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