Safety Evaluation of Traffic Merging Control Methods for Freeway Work Zone

Dong Hwan Hwang; Cheol Oh; Hyun Jin Park; Bong Jo  Jeong

doi:10.7470/jkst.2016.34.3.263

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2016 Vol.34, Issue 3 Preview Page Next Page

Safety Evaluation of Traffic Merging Control Methods for Freeway Work Zone 고속도로 공사구간 차로 합류기법 안전성 평가 연구

June 2016. pp. 263-277

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Abstract

Traffic safety in freeway work zones is of keen interest since both crash frequency and severity are much higher than those in general freeway sections. The lane closure in work zones results in greater work load of drivers due to compulsory lane changes and speed reduction. Therefore, traffic merging control is an effective countermeasure for enhancing work zone safety. This study proposed an integrated framework based on driving and traffic simulations to evaluate traffic merging control methods in terms of traffic safety. In addition to the conventional merging method using the taper, joint merge and chicane-type merge were evaluated by the proposed methodology. Chicane-type merge outperformed other methods under level of service (LOS) A and B. On the other hand, it was identified that joint merge showed the best safety performance under LOS C traffic conditions.

Keywords

chicane

joint merge

merge methods

simulation

work zone

고속도로 공사구간은 차로의 차단 및 공사구간 내 다양한 시설물에 운전자가 노출되기 때문에 사고가 빈번하게 발생하는 구간이다. 공사구간 중 완화구간은 차로차단으로 인하여 차량의 합류가 발생하므로 사고의 위험도가 높다. 따라서 본 연구에서는 주행 시뮬레이션(Driving Simulation)과 교통 시뮬레이션 (Traffic Simulation)의 연계 분석을 적용하여 세 가지 유형의 차로합류 기법에 대한 안전성을 비교 평가하였다. 분석 결과, 기존 차로차단 기법보다 사전 유도기법 또는 Joint Merge기법이 안전성 측면에서 효과적인 것으로 나타났다. 서비스 수준(LOS) A, B인 경우 사전 유도기법이 적정 합류기법으로 판단되었으며, 서비스 수준 C의 경우 Joint Merge기법이 적정 합류기법으로 판단되었다. 본 연구는 현재 운영되고 있는 차로차단 기법 외에 공사구간 교통상황에 따른 다양한 합류기법의 적용 타당성을 주행 및 교통 시뮬레이션의 연계분석을 통하여 안전성 관점에서 평가하였다는 데 의의가 있다.

키워드

사전유도구역

Joint Merge

합류기법

시뮬레이션

공사구간

References

Federal Highway Administration (2009), Surrogate Safety Assessment Model and Validation: Final Report, 24.

Idewu W., Wolshon B. (2010), Joint Merge and Its Impact on Merging Speeds in Lane Reduction Areas of Construction Zone, Transportation Research Record, Journal of the Transportation Research Board, 2169, 31-39.

Ishak S., Qi Y., Rayaprolu P. (2012), Safety Evaluation of Joint and Conventional Lane Merge Configurations for Freeway Work Zones, Traffic Injury Prevention, 13(2), 199-208.

Korea Expressway Corporation (2013), Highway Work Zone Traffic Control Standard (고속도로 공사장 교통관리기준), 19.

Lee M. R., Kim D. G. (2013), The Proper Length of Transition Area for Work Zones on Urban Freeways, J. Korean Soc. Transp., 31(4), Korean Society of Transportation, 58-66.

Ministry of Land, Infrasrtucture and Transport (2009), Rules About the Road Structure and Facilities Standards Explanation (도로의 구조ㆍ시설 기준에 관한 규칙 해설), 100.

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Shakouri M., Ikuma L. H., Aghazadeh F., Punniaraj K., Ishak S. (2014), Effects of Work Zone Configurations and Traffic Density on Performance Variables and Subjective Workload, Accident Analysis and Prevention, 71, 166-176.

Tak S. H. (2015), Development of Multi-level Connected Safety System With Traffic Predictive Cruise Control, Master's Dissertation, KAIST, 13.

Transportation Research Board (2015), Work Zone Speed Management, National Cooperative Highway Research Program Synthesis 482, 37-38.

Information

Publisher :Korean Society of Transportation
Publisher(Ko) :대한교통학회
Journal Title :Journal of Korean Society of Transportation
Journal Title(Ko) :대한교통학회지
Volume : 34
No :3
Pages :263-277
Received Date : 2016-03-23
Revised Date : 2016-05-24
Accepted Date : 2016-06-27
DOI :https://doi.org/10.7470/jkst.2016.34.3.263

Journal of Korean Society of Transportation ISSN:1229-1366(Print) 2234-4217(Online) 대한교통학회지

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