Smart Mobility and Logistics Lab
SML Lab aims at facilitating and stimulating collaboration among faculty, students, and practitioners to foster continuous learning and translating knowledge into innovative solutions for making transport and logistics more efficient, smarter, greener, and safer.

Transport and logistics planning is extremely important in particular for Turkey. Current development plans highlight the need for modern and reliable transportation systems, and aim at transforming Turkey to a global logistic hub, both for materials and energy flows, at the crossroads of three continents. Moreover, the traffic volume in all sorts of transport modes has increased rapidly, particularly in metropolitan areas like Istanbul. There have been a lot of investments to improve the infrastructure. Thus, the efficient use and planning of the resources is an important and challenging task. Moreover, developing effective plans is essentially a national priority due to the high likelihood of serious natural disasters.

Smart Mobility and Logistics Lab (SML) in Sabancı University focuses on transport logistics and mobility planning including urban transport, first-mile, long-distance and last-mile pickup/delivery operations, humanitarian logistics, electro-mobility, and sustainable logistics chains. SML team is equipped with extensive domain knowledge in logistics and transportation research and experienced in addressing multifaceted problems through systematic modeling approaches and effective solution methods using operations research tools and techniques. The Lab conducts research projects particularly on urban mobility, humanitarian logistics, and sustainable transport planning with a special emphasis on route optimization, electrification of logistics vehicles, battery performance analysis.

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Research Team

Bülent Çatay

SU, Industrial Engineering

Tonguç Ünlüyurt

SU, Industrial Engineering

Tuğçe Yüksel

SU, Mechatronics Engineering

Esra Koca

SU, Industrial Engineering

Gizem Tiniç

SU, Industrial Engineering

Duygu Taş Küten

SU, Industrial Engineering

Dr. Eren İnci

SU, Economics

Abdullah Daşçı

SU, Operations Management

Tevhide Altekin

SU, Operations Management

İhsan Sadati

SU, Industrial Engineering

Güvenç Şahin

Amazon Germany, Adjunct Researcher

Nilay Noyan [CV]

Amazon USA, Adjunct Researcher

Sina Rastani

Univ of Sheffield, Network Researcher

Merve Keskin

Univ of Sheffield, Network Researcher

Ece Naz Duman

ICRON, Network Researcher

Nozir Shokirov

PhD Candidate

Saeedeh Ahmadi Basir

PhD Candidate

Raci Berk İslim

PhD Student

Arghavan Sharafi

PhD Student

İbrahim Enes Yavaş

MSc Student

Mert Özçelik

MSc Student

Funding available for outstanding MSc and PhD students

Projects

Publications

Journal Articles
  • İslim RB, Çatay B (2024) An effective matheuristic approach for solving the electric traveling salesperson problem with time windows and battery degradation. Engineering Applications of Artificial Intelligence 132,107943. [10.1016/j.engappai.2024.107943]
Journal Articles
  • Akbari V, Sadati İ, Salman FS, Shiri D (2023) Minimizing total weighted latency in home healthcare routing and scheduling with patient prioritization. OR Spectrum 45, 807–852. [10.1007/s00291-023-00713-3]
  • Cheng M, Inci E, Xu SX, Zhai Y (2023) A novel mechanism for private parking space sharing: The Vickrey–Clarke–Groves auction with scale control. Transportation Research Part C: Emerging Technologies 150, 104106. [10.1016/j.trc.2023.104106]
  • Çatay B, Sadati İ (2023) An improved matheuristic for solving the electric vehicle routing problem with time windows and synchronized mobile charging/battery swapping. Computers & Operations Research 159, 106310. [10.1016/j.cor.2023.106310]
  • Inci E, Taspinar ZT, Ulengin B (2023) A choice experiment on preferences for electric and hybrid cars in Istanbul. Transportation Research Part D: Transport and Environment 107, 103295. [10.1016/j.trd.2022.103295]
  • Kayacık SE, Kocuk B, Yüksel T (2023) The promise of EV-aware multi-period optimal power flow problem: Cost and emission benefits. Sustainable Energy, Grids and Networks 34, 101062. [10.1016/j.segan.2023.101062]
  • Moradi N, Sadati İ, Çatay B (2023) Last mile delivery routing problem using autonomous electric vehicles. Computers & Industrial Engineering 184, 109552. [10.1016/j.cie.2023.109552]
  • Rastani S, Çatay B (2023) A large neighborhood search-based matheuristic for the load-dependent electric vehicle routing problem with time windows. Annals of Operations Research 324, 761–793. [10.1007/s10479-021-04320-9]
Conference Papers
  • Çatay B, Eshtehadi R (2023) Improving the route planning of battery electric freight vehicles through speed optimization. 7th International Symposium on Innovative Approaches in Smart Technologies 2023 (ISAS 2023), Istanbul, Turkiye, 1–6. [10.1109/ISAS60782.2023.10391678]
Journal Articles
  • Charaf S, Taş D, Flapper SD, Van Woensel T (2022) A branch-and-price algorithm for the two-echelon inventory-routing problem. Technical Report. [arxiv.org/abs/2206.12316]
  • Duman EN, Taş D, Çatay B (2022) Branch-and-price-and-cut methods for the electric vehicle routing problem with time windows. International Journal of Production Research 60(17), 5332-5353. [10.1080/00207543.2021.1955995]
  • Sadati MEH, Akbari V, Çatay B (2022) Electric vehicle routing problem with flexible deliveries. International Journal of Production Research 60(13), 4268–4294. [10.1080/00207543.2022.2032451]
  • Seyfi M, Alinaghian M, Ghorbani E, Çatay B, Sabbagh MS (2022) Multi-mode hybrid electric vehicle routing problem. Transportation Research Part E: Logistics and Transportation Review 166, 102882. [10.1016/j.tre.2022.102882]
  • Yıldırım UM, Çatay B (2022) An enhanced network-consistent travel speed generation scheme on time-dependent shortest path and routing problems. IEEE Transactions on Intelligent Transportation Systems 23(2), 873-884. [10.1109/TITS.2020.3016387]
Conference Papers
  • İslim RB, Çatay B (2022) The effect of battery degradation on the route optimization of electric vehicles. Procedia Computer Science 204, 1–8. [10.1016/j.procs.2022.08.118]
Journal Articles
  • Akbari V, Sadati MEH, Kian R (2021) A decomposition-based heuristic for a multicrew coordinated road restoration problem. Transportation Research Part D: Transport and Environment 95, 102854. [10.1016/j.trd.2021.102854]
  • Keskin M, Çatay B, Laporte G (2021) A simulation-based heuristic for the electric vehicle routing problem with time windows and stochastic waiting times at recharging stations. Computers & Operations Research 125, 105060. [10.1016/j.cor.2020.105060]
  • Koca E, Noyan N, Yaman H (2021) Two-stage facility location problems with restricted recourse. IISE Transactions 53(12), 1369-1381. [10.1080/24725854.2021.1910883]
  • Sadati MEH, Çatay B (2021) A hybrid variable neighborhood search approach for the multi-depot green vehicle routing problem. Transportation Research Part E: Logistics and Transportation Review 149, 102293. [10.1016/j.tre.2021.102293]
  • Sadati MEH, Çatay B, Aksen D (2021) An efficient variable neighborhood search with tabu shaking for a class of multi-depot vehicle routing problems. Computers & Operations Research 133, 105269. [10.1016/j.cor.2021.105269ine]
  • Taş D, (2021) Electric vehicle routing with flexible time windows: a column generation solution approach. Transportation Letters, 13(2), 97–103. [10.1080/19427867.2020.1711581]
  • Tinic GÖ, Koca E, Yaman H (2021) An exact solution approach for the inventory routing problem with time windows. Computers & Operations Research 134, 105371. [10.1016/j.cor.2021.105371]
  • Van Ommeren J, McIvor M, Mulalic I, Inci E (2021) A novel methodology to estimate cruising for parking and related external costs. Transportation Research Part B: Methodological 145, 247-269. [10.1016/j.trb.2020.12.005]
  • Xu M, Inci E, Chu F, Verhoef ET (2021) Editorial: Parking in the Connected and Automated Era: Operation, Planning, and Management. Transportation Research Part C: Emerging Technologies 127, 103115. [10.1016/j.trc.2021.103115]
Journal Articles
  • Şahin G, Digehsara AA, Borndörfer R, Schlechtec T (2020) Multi-period line planning with resource transfers. Transportation Research Part C: Emerging Technologies 119, 102726. [10.1016/j.trc.2020.102726]
Book Chapters
  • Rastani S, Yüksel T, Çatay B (2020) Electric vehicle routing problem with time windows and cargo weight. In: Golinska-Dawson P., Tsai KM., Kosacka-Olejnik M. (eds.), Smart and Sustainable Supply Chain and Logistics – Trends, Challenges, Methods and Best Practices. EcoProduction (Environmental Issues in Logistics and Manufacturing), Switzerland, 175–190. [10.1007/978-3-030-61947-3_12]
Conference Papers
  • Nozir S, Çatay B, Ünlüyurt T (2020) Crew constrained home health care routing problem with time windows and synchronized visits. Lecture Notes in Management and Industrial Engineering, Springer, 87–96. [10.1007/978-3-030-42416-9_9]
Journal Articles
  • Bakis O, Inci E, Senturk RO (2019) Unbundling curbside parking costs from housing prices. Journal of Economic Geography 19(1), 89–119. [10.1093/jeg/lby003]
  • Inan MO, Inci E, Lindsey RC (2019) Spillover parking. Transportation Research Part B: Methodological 125, 197-228. [10.1016/j.trb.2019.05.012]
  • Keskin M, Laporte G, Çatay B (2019) Electric vehicle routing problem with time-dependent waiting times at recharging stations. Computers & Operations Research 107, 77–94. [10.1016/j.cor.2019.02.014]
  • Noyan N, Meraklı M, Küçükyavuz S (2019) Two-stage stochastic programming under multivariate risk constraints with an application to humanitarian relief network design. Mathematical Programming, 1-39. [10.1007/s10107-019-01373-4]
  • Rastani S, Yüksel T, Çatay B (2019) Effects of ambient temperature on the route planning of electric freight vehicles. Transportation Research Part D: Transport and Environment 74, 124–141. [10.1016/j.trd.2019.07.025]
Conference Papers
  • Keskin M, Akhavan-Tabatabaei R, Çatay B (2019) Electric vehicle routing problem with time windows and stochastic waiting times at recharging stations. 2019 Winter Simulation Conference (WSC), National Harbor, MD, USA, 1649-1659. [10.1109/WSC40007.2019.9004766]
    Journal Articles
    • Elçi Ö, Noyan N (2018) A chance-constrained two-stage stochastic programming model for humanitarian relief network design. Transportation Research Part B: Methodological 108, 55–83. [10.1016/j.trb.2017.12.002]
    • Elçi Ö, Noyan N, Bülbül K (2018) Chance-constrained stochastic programming under variable reliability levels with an application to humanitarian relief network design. Computers & Operations Research 96, 91–107. [10.1016/j.cor.2018.03.011]
    • Inci E, Lindsey R, Oz G (2018) Parking fees and retail prices. Journal of Transport Economics and Policy 52(3), 298–321. [Online Acces]
    • Keskin M, Çatay B (2018) A matheuristic method for the electric vehicle routing problem with time windows and fast chargers. Computers & Operations Research 100, 172–188. [10.1016/j.cor.2018.06.019]
    • Noyan N, Kahvecioğlu G (2018) Stochastic last mile relief network design with resource reallocation. OR Spectrum 40(1), 187–231. [10.1007/s00291-017-0498-7]
    Conference Papers
    • Çakmak UC, Apaydın MS, Çatay B (2018) Traffic speed prediction with neural networks. In: Kliewer N., Ehmke J., Borndörfer R. (eds) Operations Research Proceedings 2017: Selected Papers of the Annual International Conference of the German Operations Research Society, Springer, 737–743. [10.1007/978-3-319-89920-6_98]
    • Renken R, Ahmadi A, Borndörfer R, Şahin G, Schlechte T (2018) Demand-driven line planning with selfish routing. In: Kliewer N., Ehmke J., Borndörfer R. (eds) Operations Research Proceedings 2017: Selected Papers of the Annual International Conference of the German Operations Research Society, Springer, 687-692. [10.1007/978-3-319-89920-6_91]
Journal Articles
  • Altekin FT, Aylı E Şahin G (2017) After-sales services network design of a household appliances manufacturer. Journal of the Operational Research Society 68(9), 1056–1067. [10.1057/s41274-016-0142-y]
  • Feyzioglu O, Noyan N (2017) Risk-averse toll pricing in a stochastic transportation network. European Journal of Industrial Engineering 11(2), 133–167. [10.1504/EJIE.2017.083248]
  • Inci E, van Ommeren J, Kobus M (2017) The external cruising costs of parking. Journal of Economic Geographyg 17(6), 1301–1323. [10.1016/j.trb.2016.04.016]
  • Yüksel T, Litster S, Viswanathan V, Jeremy J (2017) Plug-in hybrid electric vehicle LiFePO4 battery life implications of thermal management, driving conditions, and regional climate. Journal of Power Sources 338, 49–64. [10.1016/j.jpowsour.2016.10.104]
Conference Papers
  • Çatay B, Keskin M (2017) The impact of quick charging stations on the route planning of electric vehicles. 22nd IEEE Symposium on Computers and Communications ( ISCC 2017), Heraklion, Greece. [10.1109/ISCC.2017.8024521]
  • Ermiş G, Çatay B (2017) Accelerating local search algorithms for the travelling salesman problem through the effective use of GPU. Transportation Research Procedia 22, 409–418. [10.1016/j.trpro.2017.03.012]
  • Kayikci Y, Çatay B (2017) A revenue-based slot allocation and pricing framework for multimodal transport networks. In: KS Pawar et al. (eds.) Proc. of the 22nd International Symposium on Logistics ( ISL 2017), Ljubljana, Slovenia:672–679.
  • Kleiner F, Beermann M, Çatay B, Beers E, Davies H, Lim OT (2017) Current status of the electrification of transport logistic vehicles-early niche markets and commercialization opportunities. In: Proc. of the 2017 European Battery, Hybrid and Fuel Cell Electric Vehicle Congress ( EEVC 2017), Geneva, Switzerland
  • Mutlu A, Kayikci Y, Çatay B (2017) Planning multimodal freight transport operations: A literature review. In: KS Pawar et al. (eds.) 22nd International Symposium on Logistics ( ISL 2017), Ljubljana, Slovenia, 553–560.
Journal Articles
  • Emeç U, Çatay B, Bozkaya B (2016) An adaptive large neighborhood search for an e-grocery delivery routing problem. Computers & Operations Research 69, 109–125. [10.1016/j.cor.2015.11.008] [Dataset]
  • Ersoy FY, Hasker K, Inci E (2016) Parking as a loss leader at shopping malls. Transportation Research Part B: Methodological 91, 98–112. [10.1016/j.trb.2016.04.016]
  • Keskin M, Çatay B (2016) Partial recharge strategies for the electric routing problem with time windows. Transportation Research Part C: Emerging Technologies 65, 111–127. [10.1016/j.trc.2016.01.013]
  • Noyan N, Balçık B, Atakan S (2016) A stochastic optimization model for designing last mile relief. Transportation Science 50(3), 1092–1113. [10.1287/trsc.2015.0621]
Conference Papers
  • Keskin M, Çatay B (2015) The electric vehicle routing problem: Outlook and recharging strategies. In: U Aydın et al. (eds.), 13th International Logistics and Supply Chain Congress, Izmir, Turkey, 828–838.
  • Kleiner F, Özdemir ED, Schmid SA, Beermann M, Çatay B, Moran B, Lim OT, Friedrich HE (2015) Electrification of transport logistic vehicles: A techno-economic assessment of battery and fuel cell electric transporter. 28th International Electric Vehicle Symposium and Exhibition ( EVS28), Goyang, South Korea.
  • Özdemir ED, Kleiner F, Beermann M, Çatay B, Beers E, Moran B, Lim OT, Schmid SA (2015) Status and trends for electrified transport logistic vehicles. 2015 European Battery, Hybrid and Fuel Cell Electric Vehicle Congress ( EEVC 2015), Brussels, Belgium.
  • Shi W, Weise T, Chiong R, Çatay B (2015) Hybrid PACO with enhanced pheromone initialization for solving the vehicle routing problem with time windows. IEEE Symposium Series on Computational Intelligence ( SSCI 2015), Cape Town, South Africa, 1735–1742. [10.1109/SSCI.2015.242]
  • Tozlu B, Daldal R, Ünlüyurt T, Çatay B (2015) Crew constrained home care routing problem with time windows. 2015 IEEE Symposium Series on Computational Intelligence ( SSCI 2015), Cape Town, South Africa, 1751-1757. [10.1109/SSCI.2015.244]
  • Yıldırım UM, Çatay B (2015) An ant colony-based matheuristic approach for solving a class of vehicle routing problems. Lecture Notes in Computer Science 9335, 105–119. [10.1007/978-3-319-24264-4_8]

Theses / Dissertations

MSc THESES
  • İyican, Çağrı Doğuş (2023) Two-echelon location routing problem with multiple trips (Supervisor: E. Koca)
  • Doğan, İsmail Gökay (2022) Two-echelon distribution network design with collaboration among carriers (Supervisor: E. Koca)
  • Doğan, Oğulcan (2022) A comparative analysis on undirected cut-based formulations of periodic vehicle routing problem (Supervisor: G. Tiniç)
  • İslim, Raci Berk (2022) Charge scheduling and route planning of electric freight vehicles effects considering battery degradation (Supervisor: B. Çatay) [PhD Student, Sabancı University]
  • Moradi, Nima (2022) Last mile delivery routing problem using autonomous electric vehicles (Supervisors: B. Çatay, MEH Sadati) [PhD Student, Concordia University]
  • Eğer, Zekeriya Ender (2021) Reinforcement learning based energy management strategy for fuel cell hybrid vehicles (Supervisors: T. Yüksel, S. Yeşilyurt)
  • Ardebili, Yasaman Karimian Hadi (2020) Alternative formulations and solution approaches for distribution network design with seasonality (Supervisors: G. Şahin, F.T. Altekin) [PhD Student, Technical University of Munich ]
  • Özyavaş, Pınar (2020) Vehicle relocation problems in free-floating car sharing systems (Supervisor: G. Tiniç) [PhD Student, University of Groningen]
  • Karadeniz-Alver, Özlem (2018) A multi-criteria reverse logistics network design for waste electrical and electronic equipment (Supervisors: B. Çatay, B. Ayvaz) [PhD Student, Özyeğin University]
  • Mutlu, Aysun (2018) Revenue-driven dynamic pricing and operational planning in multimodal freight transportation (Supervisors: B. Çatay, Y. Kayıkçı) [PhD Student, McGill University]
  • Çakmak, Umut Can (2017) Traffic speed prediction with neural networks (Supervisor: B. Çatay) [The Logic Factory, Netherlands]
  • Shokirov, Nozir (2017) A variable neigborhood search approach for solving the crew constrained home care routing problem (Supervisors: B. Çatay, T. Ünlüyurt) [PhD Student, Sabanci University]
  • Tanoumand, Neda (2017) A branch-and-price algorithm for resource constrained vehicle routing problem with time windows (Supervisor: T. Ünlüyurt) [PhD Student, University of Toronto]
  • Elçi, Özgün (2016) Chance-constrained stochastic programming models for humanitarian relief network design (Supervisors: N. Noyan Bülbül, K. Bülbül) [PhD Student, Carnegie Mellon University]
PhD DISSERTATIONS
  • Ahmadi Basir, Saeedeh (in progress) Periodic vehicle routing problems with visual attractiveness constraints (Supervisors: G. Tiniç, G. Şahin)
  • Digehsara, Amin Ahmadi (2022) Multi-period line planning in public transportation (Supervisors: G. Şahin, R. Borndörfer) [Postdoctoral Researcher, University of British Columbia]
  • Duman, Ece Naz (2022) Column generation-based methods for the electric vehicle routing problems with time windows (Supervisors: B. Çatay, D. Taş Küten) [Senior Operations Research Specialist, ICRON]
  • Rastani, Sina (2020) Route planning of electric freight vehicles by considering internal and environmental conditions (Supervisor: B. Çatay) [Assistant Professor, Sheffield University Management School]
  • Keskin, Merve (2018) Recharge strategies for the electric vehicle routing problem with time windows in deterministic and stochastic environments (Supervisor: B. Çatay) [Assistant Professor, Sheffield University Management School]
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