A Study of Dynamic Right-Turn Signal Control Strategy at Mixed Traffic Flow Intersections
Abstract
Traffic conflicts among right-turn vehicles (RTVs), non-motorized vehicles (NMVs) and pedestrians were examined for urban signalized intersections with exclusive right-turn lane. This study proposed an approach to dynamically calculate the duration of the prohibited right-turn for vehicles by using a measure called the Degree of Clustered Conflict (DCC). The process of DCC control includes: 1) quantitative calculation of DCC value in the conflict area; 2) establishing the general cost model that combines the delay and conflict indicators; and 3) applying the DCC-control time model to control RTV in real time. Based on these, the paper presented a general approach of detailed dynamic on-line signal control process of RTV. Finally, the RTV control process was programmed based on VISSIM simulation to evaluate the control effectiveness. The results showed that the general cost (weighted summation of delay and conflict) of the RTV control decreases rapidly compared with non-control, fixed control and full control (drop of 58%, 35% and 42% under small flow conditions and 70%, 59% and 17% in the large flow conditions, respectively). The method not only improved the operation efficiency, but also reduced the potential safety risks among traffic participants when vehicles turn right at intersections.
References
Chen YY, Guo JF, Yuan H. A Guide of Vulnerable Road User Safety Design. Beijing, China: China Communications Press; 2010.
Herman H, Zegeer C, Nassi R. Effects of Innovative Pedestrian Signs at Unsignalized Locations. Transportation Research Record. 2000;(1705):43-52.
Sun J, Zhou SE, Li KP. Evaluation of Safety Factors at Chinese Intersections. Proceedings of ICE: Transport. 2012;165(3):195-204.
Van Houten R, Retting RA, Farmer CM, Van Houten J. Field Evaluation of a Leading Pedestrian Interval Signal Phase at Three Urban Intersections. Transportation Research Record. 2000;1734:86-92.
Perkins SR, Harris JI. Traffic Conflict Characteristics: Accident Potential at Intersections. Highway Research Record. 1968;(225):35-43.
Herman H. The Effects of No Turn on Red/Yield to PEDS: Variable Message Signs on Motorist and Pedestrian Behavior. University of North Carolina at Chapel Hill, Florida Department of Transportation; 2002. p. 15-20.
Abu-Lebdeh G, Benekohal RF, Al-Omari B. Models for Right-Turn-on-Red and Their Effects on Intersection Delay. Transportation Research Record 1997;(1572):131-139.
Lord D. Synthesis on the Safety of Right-turn on Red in the United States and Canada. Presented at 82nd Annual Meeting of the Transportation Research Board. Washington DC; 2002.
Yi Q, and Li D. When Should Right Turn on Red (RTOR) Be Used? Synthesis on the Safety of RTOR. Presented at 91st Annual Meeting of the Transportation Research Board. Washington DC; 2012.
Bui B, Cameron M, Wai FC. Effect of Right-turn Phases at Signalized Intersections. Part 1-Safety Performance. Report No. 20, VIC ROADS; 1991.
Liu HY, Qian DL, Li SS. Critical Flow of Conflict between Motor Vehicles and Non-motor Vehicles at Signalized Intersection. Journal of Transport Information and Safety. 2010;4(28):77-80.
Su YL, Yao YD, Zhang Y. Exclusive Right-turn Phase Setting Simulation Based on Vehicle/ Pedestrian Conflict Analysis. Journal of Highway and Transportation Research and Development. 2009;26(7):133-138.
Yu Q, Liu JG, Rong J, Liu XM. A Signal Control Strategy for Right Turning Vehicle Based on the Conglomeration. ICCTP 2010, Proceedings; 2010. p. 1149-1154.
Wang D, Liang C, Feng T. Signal Timing Method of Right-turn Vehicles Based on Mixed Traffic. Journal of Harbin Institute of Technology. 2009;41(10):251-254.
Zhang YC. Study on Right Turn Lane Signal Control at Urban Signalized Intersections. Master's Dissertation of Tongji University, China; 2011.
Highway Capacity Manual (HCM). Transportation Research Board, National Research Board, National Research Council. Washington DC; 2010.
The state council. People's Republic of China on road traffic accidents approach. [Internet, cited 2011 March 3] http://www.mps.gov.cn/n16/n1282/n3493/n3778/n492878/493491.html
National bureau of the People's Republic of China. 2008 Statistics Bulletin of the National Economic and Social Development [Internet, cited 2011 March 6] http://www.stats.gov.cn/tjsj/ndsj/2008/indexch.htm
Zhou S, Li K, Sun J, Han, P. Calibration and Validation Procedure for Intersection Safety Simulation using SSAM and VISSIM. ICCTP 2010, Proceedings; 2010. p. 603-615.
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