Effectiveness of managed lanes on south Korean expressways

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This paper evaluates mobility performance by conducting comparative analysis before and after the implementation of managed lanes on Korean expressways. Two types of managed lanes, bus lanes and hard shoulder running, have been implemented as congestion management strategies. The analysis shows that the managed lanes on Korean expressways enhance the mobility performance without constructing additional roadway infrastructure. Bus lanes were installed by converting median lanes to contiguous, contra-flow bus lanes on both directions of the Gyeongbu expressway in July 2008. After bus lanes were in place, passenger vehicle demand has diminished significantly due to travel time savings offered by bus lanes. This reduced demand allows buses to travel faster without degrading traffic conditions in general purpose lanes. As a result, vehicle hours traveled as well as person hours traveled on the expressways with bus lanes have diminished. Since the inception of Hard shoulder running (HSR) in November 2007, HSRs have been installed at 23 sites to increase capacity temporarily by converting hard shoulder areas to a traveling lane during congested time periods. Traffic data collected from five sites where HSRs have recently been implemented show that the congestion was mitigated and the speed increased as HSR went into effect. The findings from the evaluation provide enhanced understanding about the operation of managed lanes and plans for potential improvement.
Transportation Research Board
Issue Date

Transportation Research Board 93rd Annual Meeting

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RIMS Conference Papers
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