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Vehicle routing–scheduling for municipal waste collection system under the “Keep Trash off the Ground” policy
Institution:1. Department of Logistics Management, National Kaohsiung First University of Science and Technology, No.1, University Road, Yanchao District, Kaohsiung City 824, Taiwan;2. Department of Transportation and Communication Management Science, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan;1. Molde University College, The Norwegian School of Logistics, 6405 Molde, Norway;2. United Institute of Informatics Problems, National Academy of Sciences of Belarus, Surganova 6, 220012 Minsk, Belarus;1. Department of Electrical and Computer Engineering, North South University, Dhaka, Bangladesh;2. Department of Industrial and Manufacturing Systems Engineering, The University of Texas at Arlington, Box 19017, Arlington, TX 76019, USA;3. Department of Computer Science and Engineering, The University of Texas at Arlington, Box 19015, Arlington, TX 76019, USA;1. Department of Operations & Information Management, Isenberg School of Management, University of Massachusetts Amherst, 121 Presidents Dr., Amherst, MA 01003, USA;2. Engineering Management Program, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon;1. Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran
Abstract:This paper investigates the waste collection problem and characterizes the problem as a set-covering and vehicle routing problem (VRP) complicated by inter-arrival time constraints. The study proposes a bi-level optimization formulation to model the split delivery VRP with multiple trips to determine the minimum-distance route. The first stage optimally plans the collection points that cover all residential blocks. The second stage applies a heuristics method to solve the minimum vehicles used and minimum distance traveled for collecting residential waste. This research contributes to model this period VRP and to introduce the heuristics method to solve the problem efficiently. The study is important in laying the groundwork for understanding the possibility of improving the service level of municipal solid waste collection.
Keywords:Waste collection problem  VRP  Split delivery
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