Abstract This paper provides research results of a study to assess the driver performance levels of a 2+1 road, a special type of road involving intermediate cross section that is applied where a four-lane roadway construction is unjustifiable and the use of a two-lane road design may not provide the desired level of mobility. Despite increased driver safety, the use of the 2+1 road involves a problem that the South Korean government cannot assess the mobility effects of 2+1 roads, because the current Korean Highway Capacity Manual lacks the level of service procedure for 2+1 roads. Hence, research is required to provide potential measures of effectiveness for describing traffic flows in 2+1 roads and establish a reliable level of service analysis procedure. To address this issue, we applied the following approach: (1) existing research concerning 2+1 road design and flow performance was reviewed; (2) a field study was conducted in 2+1 roads with video cameras and traffic detectors to investigate traffic flow conditions; (3) candidate measures of effectiveness for describing traffic flow in 2+1 roads were identified based on field study results as well as TWOPAS simulation efforts; and (4) an analysis procedure applicable to determine levels of traffic flow service for 2+1 roads was proposed. We also examined how our proposed procedure would perform based on a case study. It was found that the percent time spent following would represent the most appropriate measures of effectiveness and that realistic output may be produced with our proposed procedure.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Sustainable design of rural roads with 2+1 road design: Levels of service and traffic flow performance


    Contributors:

    Published in:

    Publication date :

    2016-03-12


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Sustainable design of rural roads with 2+1 road design: Levels of service and traffic flow performance

    Choi, Jaisung / Kim, Youngrok / Bergh, Torsten et al. | Online Contents | 2016


    Safe design of rural roads by normalized road characteristics

    Richter, T. / Zierke, B. / Berlin, T.U. et al. | British Library Conference Proceedings | 2009




    ROAD SAFETY ON VERY LOW TRAFFIC ROADS IN UNDEVELOPED RURAL AREAS

    Permanent International Association of Road Congresses | British Library Conference Proceedings | 2004