All Issue

2025 Vol.43, Issue 4 Preview Page

Article

Analysis of Traffic Management Strategies for Merging Area on Underground Road

교통 시뮬레이션 기반 지상도로와 지하도로 합류부 교통운영 전략 평가

Hoyoon LEE1
,
Jieun KO2
,
Hyeonseok JIN3
,
Cheol OH4*
이 호윤1
,
고 지은2
,
진 현석3
,
오 철4*
1M.S. Student, Department of Transportation and Logistics Engineering, Hanyang University, Gyeonggi 15588, Korea
2Postdoctoral Researcher, Department of Transportation and Logistics Engineering, Hanyang University, Gyeonggi 15588, Korea
3M.S. Student, Department of Smart City Engineering, Hanyang University, Gyeonggi 15588, Korea
4Professor, Department of Transportation and Logistics Engineering, Hanyang University, Gyeonggi 15588, Korea
1한양대학교 교통·물류공학과 석사과정
2한양대학교 교통·물류공학과 박사후연구원
3한양대학교 스마트시티공학과 석사과정
4한양대학교 교통·물류공학과 교수
*Corresponding Author
31 August 2025. pp. 499-511
PDF XML Citation
Abstract

There have continuously been plans to operate urban underground roads in South Korea to alleviate traffic congestion and make ground space pedestrian-friendly. Increasing road capacity through three-dimensional utilization of road space is required to overcome the limitation of planar space. However, operating underground roads necessarily requires the connection between ground and underground roads, which leads to additional traffic congestion and conflicts between different traffic flows. This study analyzed traffic operations strategies to improve mobility and safety at the merging area on underground roads based on microscopic simulations. Simulation scenarios include the lane change allowance and heavy vehicle restrictions on the underground road, metering technique for entering vehicles, and a baseline without traffic management strategies. The results showed that the operation of metering on the ground road led to the highest increase in average speed (5.44km/h, 12.65%) and throughput (84veh/h, 0.99%) in the merging area, compared to the baseline. Analysis of variance (ANOVA) and post-hoc tests were conducted to evaluate the significance of the improvement effect, which suggested that metering operation enhances the mobility performance in terms of average speed. Next, the results of conflict analysis found that the total number of conflicts in the merging area decreased by 744 (29.25%) due to the implementation of metering. The outcomes of this study are expected to support the establishment of a traffic operation strategy to improve the operational efficiency of urban underground roads.

Keywords
conflict analysis
merging area
traffic management strategy
traffic simulation
underground road

국내 수도권을 중심으로 교통혼잡 완화와 지상 공간의 보행친화적 활용을 위한 도심부 지하도로 건설이 계획되고 있다. 도로용량 증대를 위해 수평적 도로 공간 확장을 극복하기 위한 도로 공간의 입체적인 공간 활용이 필요한 상황이다. 그러나, 지하도로 운영 시 지상도로와 지하도로의 연계가 불가피하며 서로 다른 교통류의 상충으로 인해 교통혼잡이 가중되고 도로 안전에 저하가 발생할 수 있다. 본 연구는 미시적 교통 시뮬레이션을 통해 지하도로와 지상도로 합류 구간의 이동성 및 안전성을 향상하기 위한 교통운영 전략을 분석하였다. 지하도로 내 차로변경 허용, 지하도로 내 진입 차종 제한, 합류 차량에 대한 미터링과 교통운영 전략을 시행하지 않은 기본안을 포함하여 총 4가지 시나리오의 교통류를 비교하였다. 시뮬레이션 분석 결과, 접속한 지상도로에 미터링을 시행하는 경우 교통운영 전략 미시행 대비 평균속도가 5.44km/h(12.65%) 증가하였으며 통과교통량이 84대/시(0.99%) 증가하여 이동성 개선 효과가 가장 높게 도출되었다. 분산분석과 사후분석을 통해 합류 구간에 대한 시나리오별 개선 효과의 유의성을 평가하였으며 미터링 방안의 평균속도 개선 효과가 통계적으로 유의한 것으로 도출되었다. 다음으로, 상충 분석 기반 교통운영 전략의 안전성 개선 효과를 평가하였으며 미터링 시행으로 전체 상충이 744건(29.25%) 감소하였다. 본 연구의 결과는 시뮬레이션 기반의 지하도로 운영 효율성 개선을 위한 교통운영 전략 수립의 기초 자료로 활용될 수 있을 것으로 기대된다.

키워드
상충 분석
합류부
교통운영 전략
교통 시뮬레이션
지하도로
References
1

Baek S. K., Lee S. J., Han D. H., Yeom C. H. (2017), A Study on Line Marking at Tunnel and Bridge of Expressway, Report No. 2017-38-534.9607, Korea Expressway Corporation Research Institute.

2

Kang W. J., Kim Y. C., Lee M. H. (2016), A Study of Ramp Metering System Using Off-ramp Exit Percentage, Journal of Korean Society of Intelligent Transport Systems, 15(6), 102-115.

10.12815/kits.2016.15.6.102
3

Kim M., Kim H. (2023), An Analysis Plan for the Effects of Underground Road Construction by Urban Sector, WP 23-09, Korea Research Institute for Human Settlements.

4

Kim S. G., Kim Y. H., Kim T. W., Son Y. T. (2004), A Study on Characteristics of Traffic Flow in Congested Traffic at On-ramp Influence Area, J. Korean Soc. Transp., 22(5), Korean Society of Transportation, 99-109.

5

Kim S. G., Ryu J. H. (2010), The Effect of Single-Entry Metering and Platoon Metering on Mainstream under the Same Metering Rate with Pre-timed Metering, J. Korean Soc. Transp., 28(3), Korean Society of Transportation, 29-37.

6

Kim T. H., Roh C. G., Son B. S. (2012), The Analysis of the Impact of Heavy Vehicles in Urban Freeway Basic Section, J. Korean Soc. Transp., 30(1), Korean Society of Transportation, 75-83.

10.7470/jkst.2012.30.1.075
7

Kwon Y. H., Yoon J. Y., Lee E. E. (2011), A Studying on RMS Operating Guidelines: With a Focus on Seoul Ring Expressway, Journal of the Korean Society of Civil Engineering, 31(5D), 649-656.

8

Lee J. H., Nam H. H. (2025), Policy Suggestions for Efficient Implementation of Three-Dimensional Road Infrastructure Using Underground Roads, Road Traffic, 177, Korea Road Association, 112–119.

9

Lee J. K., Park S. H., Ko S. U. (2024), Operational Effectiveness Based on Demand Control and Lane Change Permitting Strategy for Sinwol-Yeoui Underground Road, International Journal of Highway Engineering, 26(2), 97-113.

10.7855/IJHE.2024.26.2.097
10

Lee S., Oh C. (2018), A Methodology to Establish Operational Strategies for Truck Platoonings on Freeway On-ramp Areas, J. Korean Soc. Transp., 36(2), Korean Society of Transportation, 67-85.

10.7470/jkst.2018.36.2.067
11

Ministry of Land, Infrastructure and Transport(MOLIT) (2013), Highway Capacity Manual.

12

Ministry of Land, Infrastructure and Transport(MOLIT) (2020), Explanation of Rules about the Road Structure & Facilities Standards.

13

Ministry of Land, Infrastructure and Transport(MOLIT) (2023), Urban Underground Design Guideline.

14

Oh S., Yun J., Lee J. (2023), Impact of Mixed Traffic in Urban Networks: Investigating the Effects of Varying Autonomous Vehicle Levels and Penetration Rates, J. Korean Soc. Transp., 41(3), Korean Society of Transportation, 321-339.

10.7470/jkst.2023.41.3.321
15

Park S. H., Lee J. K., Ko S. U. (2022), A Study on the Analysis of Underground Road Behavior Using VISSIM and VR Simulator, Journal of Digital Contents Society, 23(12), 2507-2516.

10.9728/dcs.2022.23.12.2507
16

Park S. H., Lee J. K., Yang C. H., KIm J. G. (2021), Preliminary Study for Risk Assessment Estimation of Urban Underground Connect Section Using VISSIM: Comparison of Characteristics Based on Diverge/merge, Journal of Korean Society of Intelligent Transport Systems, 20(5), 59-74.

10.12815/kits.2021.20.5.59
17

Park S., Kim Y., Oh C., Choi S. (2018), Analysis of Impacts of Aggressive Driving Events on Traffic Stream Using Driving and Traffic Simulations, J. Korean Soc. Transp., 36(3), Korean Society of Transportation, 169-183.

10.7470/jkst.2018.36.3.169
18

Seoul Metropolitan Government (2024), Traffic Statistics of Seoul, Retrieved June 16, 2024, from https://news.seoul. go.kr/traffic/archives/341/

19

Wiedemann R. (1974), Simulation des Strassenverkehrsflusses, Schriftenreihe des Instituts für Verkehrswesen der Universität Karlsruhe, Band 8, Karlsruhe, Germany.

20

Zhang L., Yang Y., Pan F., Wang Z., Ma C., Zhu S., Yang J. (2021), Modeling and Verification of the Length of the Entrance and Exit Sections of an Undersea Tunnel, IEEE Access, 9, 55754-55763.

10.1109/ACCESS.2021.3071308
Information
  • Publisher :Korean Society of Transportation
  • Publisher(Ko) :대한교통학회
  • Journal Title :Journal of Korean Society of Transportation
  • Journal Title(Ko) :대한교통학회지
  • Volume : 43
  • No :4
  • Pages :499-511
  • Received Date : 2025-03-25
  • Revised Date : 2025-04-02
  • Accepted Date : 2025-04-16
  • DOI :https://doi.org/10.7470/jkst.2025.43.4.499
Journal Informaiton Journal of Korean Society of Transportation Journal of Korean Society of Transportation
Archives
: 2015 Vol.34~
  • scopus
  • NRF
  • KOFST
  • crossref cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close