Safety Evaluation of Traffic Merging Control Methods for Freeway Work Zone HWANG, Dong Hwan; OH, Cheol; PARK, Hyun Jin; JEONG, Bong Jo;
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.
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 구조.시설 기준에 관한 규칙 해설), 100.
Park J. N., Oh Y. T. (2007), The Method to Estimate the Length of Transition Area at the Construction Area in the Freeway, Master's Dissertation, Ajou University, 393-401.
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.