International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Study on Design Principle of Reverse Curve in Superhighway

Superhighway 연속곡선의 설계 방침에 대한 연구

  • 김성규 (서울시립대학교 교통공학과) ;
  • 김상엽 (전북발전연구원) ;
  • 최재성 (서울시립대학교 교통공학과) ;
  • 민동찬 (서울시립대학교 교통공학과) ;
  • 장영수 (한국토지주택공사 위례사업처) ;
  • 신준수 (한국도로공사 스마트하이웨이사업단)
  • Received : 2014.07.14
  • Accepted : 2014.11.26
  • Published : 2014.12.18
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Abstract

PURPOSES : This study is to conduct the research on the design principle for the driver's safety and comfort in installing consecutive curves of superhighway. METHODS : Superhighway does not currently exist in domestic area. Thus, this study is conducted by collecting driving behavior usage of 30 people who are involved in the members of the virtual driving simulation. By identifying the distribution characteristics of each scenario in ANOVA & Tukey Test, the distribution are categorized into three groups. RESULTS : In the case of Group A in Section 3 (R2 entry part), lane departure exceeds the safety standard, which means to be risky condition. And then in the case of Group B and C, the lane departure values applying theoretical formula was evenly distributed compared to the proven values. CONCLUSIONS : Based on the result, the continuous curve design principles at superhighway should follow three standards as follow. First, an additional linear part needs to be inserted between two curves. Second, what if inserting the linear part is difficult, it would be better to insert a curve more than 2,000m. Third, R1/R2 ratio should not be over two. This design primarily aims to the safety of the operator. Such road alignment also meets the expectations of drivers, thus, it may help drivers to be compatible and amenable while driving continuous curve in superhighway.

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