Joint optimization of tram timetables and signal timing adjustments at intersections |
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| Institution: | 1. School of Transportation and Logistics, East China Jiaotong University, 808 Shuanggang Rd, Nanchang, China;2. Department of Civil and Environmental Engineering, University of Maryland, 1173 Glenn Martin Hall, College Park, United States;3. Shenyang Hunnan Modern Tramway Operation Co. Ltd., 255 Chuangxin Road, Shenyang, China;1. Department of Civil and Environmental Engineering, University of Maryland, College Park, 1173 Glenn Martin Hall, College Park, MD 20742, United States;2. Department of Finance and Investment, Sun Yat-sen Business School, Sun Yat-sen University, Bldg 388, 135 Xingangxi Rd, Guangzhou 510275, China;1. VŠB-Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electrical Engineering (420), 17. listopadu 15/2172, 708 33 Ostrava, Poruba, Czech Republic;2. Gdansk University of Technology, Faculty of Electrical and Control Engineering, Department of Electrical Transport, ul. J. Sobieskiego 7, 80-216 Gdańsk, Poland;3. VŠB-Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electrical Power Engineering (410), 17. listopadu 15/2172, 708 33 Ostrava, Poruba, Czech Republic;1. Department of Civil and Environmental Engineering, University of Utah, 100 Central Campus Dr., Suite 2000, Salt Lake City, Utah 84112, United States;2. Department of Civil and Environmental Engineering, University of Maryland, 1173 Glenn Martin Hall, College Park, MD 20742, United States |
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| Abstract: | This paper explores at the planning level the benefits of coordinating tram movements and signal timings at controlled intersections. Although trams may have dedicated travel lanes, they mostly operate in a mixed traffic environment at intersections. To ensure tram progression, pre-set signal timings at intersections are adjusted by activating Transit Signal Priority (TSP) actions, which inevitably add delays to the auto traffic. A mixed integer program is proposed for jointly determining tram schedules for a single tram line and modifying signal timings at major controlled intersections. The objective is to minimize the weighted sum of the total tram travel time and TSP’s negative impacts on other traffic. A real-world case study of Line 5 of the Shenyang Hunnan Modern Tramway shows that by extending the dwell time or link travel time we can significantly reduce the TSP’s negative impacts on the auto traffic while only slightly increasing tram travel times. |
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| Keywords: | Tram Timetable Transit Signal Priority Shenyang Tram |
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