Browse > Article
http://dx.doi.org/10.12652/Ksce.2015.35.4.0897

Signal Timing Calculation Model of Transit Signal Priority using Shockwave Theory  

Park, Sang Sup (University of Seoul)
Cho, Hye Rim (Seoul Metropolitan Government)
Kim, Youngchan (University of Seoul)
Jeong, Youngje (Road Traffic Authority)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.4, 2015 , pp. 897-905 More about this Journal
Abstract
This research suggested the traffic signal calculation model of active transit signal priority using a shockwave model. Using this signal priority timing optimization model, the shockwave area is computed under the condition of Early Green and Green Extension among active transit signal priority techniques. This study suggested the speed estimation method of backward shockwave using average travel time and intersection passing time. A shockwave area change is calculated according to signal timing change of transit signal priority. Moreover, this signal timing calculation model could determine the optimal signal priority timings to minimize intersection delay of general vehicles. A micro simulation analysis using VISSIM and its user application model ComInterface was applied. This study checked that this model could calculate the signal timings to minimize intersection delay considering saturation condition of traffic flow. In case studies using an isolated intersection, this study checked that this model could improve general vehicle delay of more over ten percentage as compared with equality reduction strategy of non-priority phases. Recently, transit priority facilities are spreading such as tram, BRT and median bus lane in Korea. This research has an important significance in that the proposed priority model is a new methodology that improve operation efficiency of signal intersection.
Keywords
Transit; Active signal priority; Early green; Green extension; Optimal signal timing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Chada, S. and Newland, R. (2002). Effectiveness of Bus Signal Priority, NCTR-416-04, University of South Florida, Florida.
2 Currie, G. and Shalaby, A. (2008). "Active transit signal priority for street cars - Experience in Melbourne, Australia and Toronto, Canada." Transportation Research Record, Transportation Research Board, Vol. 2042, pp. 41-49.   DOI
3 Dion, F. and Ghanim, M. (2007). "Impact of dwell time variability on transit signal priority performance at intersections with nearside bus stop." Proc. of 86th TRB Annual Meeting, Transport Research Board, Washington, D.C.
4 Evans, H. and Skiles, G. (1970). "Improving public transit through bus preemption of traffic signals." Traffic Quarterly, Vol. 24, No. 4, pp. 531-543.
5 Gardner, K., D'Souza, C., Hounsell, N., Shrestha, B. and Bretherton, D. (2009). Review of Bus Priority at Traffic Signals around the World, University of Southampton, UK.
6 Garrow, M. and Machemehl, R. (1998). "Development and evaluation of transit signal priority strategies." Proc. of 77th TRB Annual Meeting, Transport Research Board, Washington, D.C.
7 Hong, K. S., Jeong J. H., An K. H. and Lee Y. I. (2011). "A study on the active transit signal priority control algorithm based on bus demand using UTIS." J. Korean Soc. Transp., Korean Society of Transportation, Vol. 29, No. 6, pp. 107-116.
8 Jeong, Y. J. (2011). Traffic Signal Control Strategy for Tram Priority in Arterial, Ph.D. Dissertation, University of Seoul, Seoul, Korea.
9 Jeong, Y. J., Jeong, J. H., Joo, D. H., Lee, H. W. and Heo, N. W. (2014). "Signal timing and intersection waiting time calculation model using analytical method for active tram signal priority." J. Korean Soc. Transp., Korean Society of Transportation, Vol. 32, No. 4, pp. 410-420.   DOI
10 Khasnabis, S., Reddy, G. V. and Hoda, S. K. (1993). "Evaluation of the operating cost consequences of signal preemption as an IVHS strategy." Transportation Research Record, Transportation Research Board, Vol. 1390, pp. 3-9.
11 Kim, Y. C. (2007). Development of wireless interface signal control systems for dynamic and optimum management (WISDOM): Real-time Signal Control Algorithm based on Sectional Travel Time, University of Seoul, Seoul, Korea (in Korea).
12 Levinson, H. et al. (2003). Bus rapid transit volume 1: Case Studies in Bus Rapid Transit, Transit Cooperative Research Program Report 90, Transportation Research Board, Washington, D.C.
13 Smith, H. R., Hemily, B. and Ivanovic, M. (2005), Transit signal priority(TSP): A Planning and Implementation Handbook, ITS America, Washington, D.C.
14 Li, Y. et al. (2008). Transit signal priority research tools, California Partners for Advanced Transit and Highways, California.
15 Rephlo, J. and Haas, R. (2006). Sacramento-watt avenue transit priority and mobility enhancement demonstration project, Phase III Evaluation Report, Federal Highway Administration, U.S. Department of Transportation, Washington, D.C., pp. 5-6.
16 Skabardonis, A. (2000). "Control strategies for transit priority." Transportation Research Record, Transportation Research Board, Vol. 1727, pp. 20-26.   DOI
17 Wattleworth, J. A., Courage, K. G. and Wallace, C. E. (1977). "Evaluation of some bus priority strategies on NW 7th Avenue in Miami." Transportation Research Record, Transportation Research Board, Vol. 626, pp.32-35.
18 Wilbur, E. J. (1976). The green back experiment - signal preemption for express buses : A Demonstration Project, Report DMT-014, California Department of Transportation, California.