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Analysis on Entry and Exit Behaviors at the Weaving Section of a Continuous Auxiliary Lane: Focused on Clover-shaped Interchanges

연속 부가차로 엇갈림 구간 진출입 행태분석에 관한 연구: 클로버형 입체교차로를 중심으로

  • Park, Je-Jin (Korea Expressway Corporation Research Institute) ;
  • Ha, Tae-Jun (Dept. of Civil Engineering, Univ. of Chonnam National) ;
  • Oh, Jae-Chul (Dept. of Civil Engineering, Univ. of Chonnam National) ;
  • Choi, Heung-Seob (Yeongam County Chief Safety Construction Division Civil Engineering Team)
  • 박제진 (한국도로공사 도로교통연구원) ;
  • 하태준 (전남대학교 토목공학과) ;
  • 오재철 (전남대학교 토목공학과) ;
  • 최흥섭 (영암군청 안전건설과 토목팀)
  • Received : 2017.11.24
  • Accepted : 2017.12.14
  • Published : 2017.12.31

Abstract

Current intersection with collectors allow entry and exit in the relevant sections just as defined by the pertinent design criteria without considering driving behavior of the vehicles coming in and out of the intersection. This study analyzed the roads in the weaving sections to review driving behavior. As a result, vehicles entering a main line are found to try to change a driving lane at a section 50~55m away from a nose part, while those entering a ramp from a main line try to change it at 35~40m from a nose part. Accordingly vehicles exiting to a connecting road from a main line were found to take prior action to change a lane earlier than those entering a main line. Conflict took place intensively at 35~40m section from the nose part entering a main line. Consequently, such conflict at an weaving section may be controlled by adjusting the length of driving lane making use of a double line (solid and dotted line) that can control changing a lane. Outcome of this study may be used as a basic data for operating and maintaining an weaving section of a intersection of a road and improving traffic safety.

고속도로 위빙구간은 진입과 진출차량에 의한 상충이 발생되는 지점으로 본선과의 영향을 최소화하기 위하여 집산로를 설치토록 하고 있다. 집산부의 설계속도는 50km/h이나 실제 운전자는 설계속도에 맞춰 적정한 감속이 이루어지지 않고 있어 사고위험이 상존해 있다. 현재 집산로가 설치된 위빙구간의 경우 전구간 진출입 가능한 행태로 설계되고 있어 운전행태를 분석하기 위해 본 연구를 실시하였다. 본 연구에서는 운전자의 행태를 분석하기 위해 클로버형 입체교차로를 중심으로 현장조사를 실시하였고, 조사된 자료를 활용하여 진출입 엇갈림 구간에서의 주행속도 및 차로변경위치, 운전자 주행행태를 분석하였다. 이를 통해 향후 엇갈림 진출입구간에 대한 교통안전성 향상 및 기초자료로 활용이 가능할 것으로 사료된다.

Keywords

References

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