Publications

For a complete record, download the full curriculum vitae (PDF).

Peer-Reviewed Journal Articles

  1. A bottleneck model with shared autonomous vehicles: Scale economies and price regulations (opens in a new tab)
    Koki Satsukawa and Yuki Takayama
    Transportation Research Part C: Emerging Technologies (opens in a new tab), 192, 105868, 2026
  2. Queue replacement approach to dynamic user equilibrium assignment with route and departure time choice (opens in a new tab)
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    Transportation Research Part B: Methodological (opens in a new tab), 211, 103523, 2026
  3. Integrating Real-Time Monitoring Information into Asset Failure Modeling: Application to ETC Facilities (opens in a new tab)
    Daijiro Mizutani, Rie Ikushima, Koki Satsukawa, Yosuke Kawasaki and Masao Kuwahara
    Journal of Infrastructure Systems (opens in a new tab), 32(2), 04026001, 2026
  4. Adjustment process of decentralised signal control policies with route choices: a case study with the P0 policy (opens in a new tab)
    Koki Satsukawa, Takamasa Iryo, Naoki Yoshizawa, Michael J. Smith and David Watling
    Transportmetrica B: Transport Dynamics (opens in a new tab), 13(1), 2025
  5. Optimal road facility spare parts location with continuum approximation (opens in a new tab)
    Daijiro Mizutani, Shunichi Fukuyama and Koki Satsukawa
    Transportation Research Part C: Emerging Technologies (opens in a new tab), 174, 105109, 2025
  6. Stability analysis of a departure time choice problem with atomic vehicle models (opens in a new tab)
    Koki Satsukawa, Kentaro Wada and Takamasa Iryo
    Transportation Research Part B: Methodological (opens in a new tab), 189, 103039, 2024
  7. Queue replacement principle for corridor problems with heterogeneous commuters (opens in a new tab)
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    Transportation Research Part B: Methodological (opens in a new tab), 187, 103024, 2024
  8. A paradox of telecommuting and staggered work hours in the bottleneck model (opens in a new tab)
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    Transportation Science (opens in a new tab), 58(6), 1335-1351, 2024
  9. A design of a bundling reservation system for urban transport services under demand uncertainty (opens in a new tab)
    Koki Satsukawa, Yusuke Hara, Yosuke Kawasaki and Takamasa Iryo
    Japanese Journal of JSCE (opens in a new tab), 80(9), 23-00206, 2024 (In Japanese)
  10. Optimal intervention policy of emergency storage batteries for expressway facilities considering deterioration risk during lead time of replacement (opens in a new tab)
    Daijiro Mizutani, Yuto Nakazato, Rie Ikushima, Koki Satsukawa, Yosuke Kawasaki and Masao Kuwahara
    Reliability Engineering & System Safety (opens in a new tab), 242, 109735, 2024
  11. An experimental approach for evaluating the impact of preference elicitation on search behavior in a reservation system (opens in a new tab)
    Yusuke Hara, Yosuke Kawasaki, Koki Satsukawa and Takamasa Iryo
    Japanese Journal of JSCE (opens in a new tab), 79(20), 23-20020, 2023 (In Japanese)
  12. Optimal repair policy for ETC facility with economic losses due to traffic congestion during failures (opens in a new tab)
    Koki Satsukawa, Daijiro Mizutani, Yosuke Kawasaki, Takeo Kaneda and Masao Kuwahara
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 78(3), 105-121, 2022 (In Japanese)
  13. Dynamic traffic assignment in a corridor network with multiple bottlenecks: optimum versus equilibrium (opens in a new tab)
    Haoran Fu, Takashi Akamatsu, Koki Satsukawa and Kentaro Wada
    Transportation Research Part B: Methodological (opens in a new tab), 161, 218-246, 2022
  14. Zero-queue traffic control, using green-times and prices together (opens in a new tab)
    Michael J. Smith, Takamasa Iryo, Richard Mounce, Koki Satsukawa and David Watling
    Transportation Research Part C: Emerging Technologies (opens in a new tab), 138, 103630, 2022
  15. Possibility of improving management policies for expressway facilities based on questionnaire survey of on-site engineers (opens in a new tab)
    Rie Ikushima, Daijiro Mizutani, Koki Satsukawa, Yosuke Kawasaki and Masao Kuwahara
    Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management) (opens in a new tab), 78(1), 51-69, 2022 (In Japanese)
  16. Dynamic system optimal assignment with atomic users: convergence and stability (opens in a new tab)
    Koki Satsukawa, Kentaro Wada and David Watling
    Transportation Research Part B: Methodological (opens in a new tab), 155, 188-209, 2022
  17. Departure time choice problems with heterogeneous values of schedule delay in tandem bottlenecks (opens in a new tab)
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 77(4), 330-345, 2021 (In Japanese)
  18. Model-based analysis on social acceptability and feasibility of a focused protection strategy against the COVID-19 pandemic (opens in a new tab)
    Takashi Akamatsu, Takeshi Nagae, Minoru Osawa, Koki Satsukawa, Takara Sakai and Daijiro Mizutani
    Scientific Reports (opens in a new tab), 11, 2003, 2021
  19. A basic method to evaluate management policies of variable message signs on expressways considering user costs (opens in a new tab)
    Daijiro Mizutani, Yosuke Kawasaki, Koki Satsukawa, Takeshi Nakagawa, Shogo Umeda, Rie Ikushima and Masao Kuwahara
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 76(5), I_127-I_139, 2021 (In Japanese)
  20. Stochastic stability of dynamic user equilibrium in unidirectional networks: weakly acyclic game approach (opens in a new tab)
    Koki Satsukawa, Kentaro Wada and Takamasa Iryo
    Transportation Research Part B: Methodological (opens in a new tab), 125, 229-247, 2019
  21. Network throughput under dynamic user equilibrium: queue spillback, paradox and traffic control (opens in a new tab)
    Kentaro Wada, Koki Satsukawa, Mike Smith and Takashi Akamatsu
    Transportation Research Part B: Methodological (opens in a new tab), 126, 391-413, 2019
  22. Recent advances in kinematic wave theory of traffic flows: variational formulation and network extension (opens in a new tab)
    Kentaro Wada, Toru Seo, Wataru Nakanishi, Koki Satsukawa and Masami Yanagihara
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 73(5), I_1139-I_1158, 2017 (In Japanese)
  23. Traffic performance analysis of road network based on dynamic user equilibrium (opens in a new tab)
    Kentaro Wada and Koki Satsukawa
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 73(1), 56-72, 2017 (In Japanese)
  24. A note on the solution algorithm of Nash equilibrium in dynamic traffic assignment for single destination networks (opens in a new tab)
    Koki Satsukawa and Kentaro Wada
    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) (opens in a new tab), 73(1), 103-108, 2017 (In Japanese)

Peer-Reviewed International Conferences

  1. A bottleneck model with shared autonomous vehicles: Scale economies and price regulations
    Koki Satsukawa and Yuki Takayama
    The 26th International Symposium on Transportation and Traffic Theory (ISTTT26) (opens in a new tab), Munich, Germany, July 2026
  2. Flexible and reliable transportation network design for emerging transportation services: multi-stage stochastic programming approach
    Riki Kawase, Koki Satsukawa and Toru Seo
    The 26th International Symposium on Transportation and Traffic Theory (ISTTT26) (opens in a new tab), Munich, Germany, July 2026
  3. Queue replacement approach to dynamic user equilibrium assignment with route and departure time choice
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    The 26th International Symposium on Transportation and Traffic Theory (ISTTT26) (opens in a new tab), Munich, Germany, July 2026
  4. Designing pricing strategies for community-owned shared transport: An evolutionary approach
    Sowa Suzuki, Haruki Takiguchi, Takamasa Iryo, Haruko Nakao, Koki Satsukawa, David Watling and Richard Connors
    The 29th International Conference of Hong Kong Society for Transportation Studies (29th HKSTS) (opens in a new tab), Hong Kong, China, December 2025
  5. A distributed evolutionary algorithm for optimisation of public transport operations with mixed-capacity vehicle fleets
    Takeru Nihei, Takamasa Iryo and Koki Satsukawa
    The 29th International Conference of Hong Kong Society for Transportation Studies (29th HKSTS) (opens in a new tab), Hong Kong, China, December 2025
  6. New stable responsive local gating strategies to control vehicle queues and flows in congested urban networks
    Michael Smith, David Watling, Ronghui Liu, Koki Satsukawa, Takamasa Iryo and Richard Mounce
    The 10th International Symposium on Dynamic Traffic Assignment (DTA2025) (opens in a new tab), Salerno, Italy, September 2025
  7. Markov-chain-based model for the evolutionary process of self-financed shared mobility systems: Theoretical assessments
    Takamasa Iryo, David Watling, Koki Satsukawa, Richard Connors, Haruko Nakao and Sowa Suzuki
    The 10th International Symposium on Dynamic Traffic Assignment (DTA2025) (opens in a new tab), Salerno, Italy, September 2025
  8. Assessing the evolutionary process of self-financed shared mobility systems: A laboratory experimental approach
    Haruki Takiguchi, Sowa Suzuki, Takamasa Iryo, Koki Satsukawa and Haruko Nakao
    The 10th International Symposium on Dynamic Traffic Assignment (DTA2025) (opens in a new tab), Salerno, Italy, September 2025
  9. Exploring optimal lifestyle modification pathway for preventing Cardiovascular disease using machine learning and pathfinding algorithms
    Yuki Kosaka, Shota Tsurimoto, Masahiro Noguchi, Koki Satsukawa, Masayuki Takamura and Akihiro Nomura
    European Society of Cardiology Congress 2025 (ESC2025) (opens in a new tab), Madrid, Spain, August 2025
  10. Evolutionary process of self-financed shared mobility systems
    Haruko Nakao, Koki Satsukawa, Takamasa Iryo, Richard Connors and Sowa Suzuki
    The Twelfth Triennial Symposium on Transportation Analysis (TRISTAN XII) (opens in a new tab), Okinawa, Japan, June 2025
  11. Stability analysis of a departure time choice problem with atomic vehicle models
    Koki Satsukawa, Kentaro Wada and Takamasa Iryo
    The 25th International Symposium on Transportation and Traffic Theory (ISTTT25) (opens in a new tab), Ann Arbor, USA, July 2024
  12. A paradox of telecommuting and staggered work hours in the bottleneck model
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    The 25th International Symposium on Transportation and Traffic Theory (ISTTT25) (opens in a new tab), Ann Arbor, USA, July 2024
  13. A study on the design of a reservation system for urban transport services under uncertainty
    Koki Satsukawa, Yusuke Hara, Yosuke Kawasaki and Takamasa Iryo
    The 9th International Symposium on Transport Network Resilience (INSTR2023) (opens in a new tab), Hong Kong, China, December 2023
  14. Welfare impacts of remote and flexible working policies in the bottleneck model
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    11th Symposium of the European Association for Research in Transportation (hEART2023), Zurich, Switzerland, September 2023
  15. Adjustment process of adaptive signal control strategies with route choices: a case study with Policy P0
    Koki Satsukawa, Takamasa Iryo, Naoki Yoshizawa, Michael J. Smith and David Watling
    9th International Symposium on Dynamic Traffic Assignment (DTA2023) (opens in a new tab), Chicago, USA, July 2023
  16. Queue replacement principle for corridor problems with heterogeneous commuters
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    9th International Symposium on Dynamic Traffic Assignment (DTA2023) (opens in a new tab), Chicago, USA, July 2023
  17. Dynamic system optimal traffic assignment with atomic users: Convergence and stability
    Koki Satsukawa, Kentaro Wada and David Watling
    The 24th International Symposium on Transportation and Traffic Theory (ISTTT24), Beijing, China (online), July 2022
  18. Departure time choice problems in a corridor network with heterogeneous value of schedule delay
    Takara Sakai, Takashi Akamatsu and Koki Satsukawa
    The 25th International Conference of Hong Kong Society for Transportation Studies (25th HKSTS) (opens in a new tab), Hong Kong, China (online), December 2021
  19. Zero-queue traffic control using green-times and prices together
    Michael J. Smith, Takamasa Iryo, Richard Mounce, Koki Satsukawa and David Watling
    The 8th International Symposium on Dynamic Traffic Assignment (opens in a new tab), Seattle, USA (online), June 2021
  20. Stochastic stability of dynamic user equilibrium in unidirectional networks: Weakly acyclic game approach
    Koki Satsukawa, Kentaro Wada and Takamasa Iryo
    The 23rd International Symposium on Transportation and Traffic Theory (ISTTT23) (opens in a new tab), Lausanne, Switzerland, July 2019
  21. A theoretical analysis of Macroscopic Fundamental Diagram based on dynamic user equilibrium
    Kentaro Wada and Koki Satsukawa
    The 6th International Symposium on Dynamic Traffic Assignment, Sydney, Australia, June 2016
  22. Effect of origin-destination structures on network performance: Some simple examples
    Koki Satsukawa and Kentaro Wada
    The 20th International Conference of Hong Kong Society for Transportation Studies (20th HKSTS) (opens in a new tab), Hong Kong, China, December 2015

Preprints

  1. Flexible and reliable transportation network design for emerging transportation services: multi-stage stochastic programming approach (opens in a new tab)
    Riki Kawase, Koki Satsukawa and Toru Seo
    arXiv, 2026 (Under Review)
  2. Assessing the evolutionary process of self-financed shared mobility systems: A laboratory experimental approach
    Haruki Takiguchi, Sowa Suzuki, Takamasa Iryo, Koki Satsukawa and Haruko Nakao
    2025 (In Preparation)
  3. Markov-chain-based model for the evolutionary process of self-financed shared mobility systems: Theoretical assessments
    Takamasa Iryo, David Watling, Koki Satsukawa, Richard Connors, Haruko Nakao and Sowa Suzuki
    2025 (In Preparation)
  4. New stable responsive local gating strategies to control vehicle queues and flows in congested urban networks
    Michael Smith, Ronghui Liu, Takamasa Iryo, Koki Satsukawa, Richard Mounce and David Watling
    2025 (In Preparation)
  5. Global stability of day-to-day dynamics for schedule-based Markovian transit assignment with boarding queues (opens in a new tab)
    Takashi Akamatsu, Koki Satsukawa and Yuki Oyama
    arXiv, 2023
  6. Uniqueness of dynamic user equilibrium in a corridor network
    Koki Satsukawa
    2023 (In Preparation)
  7. Non-existence of queues for system optimal departure patterns in tree networks (opens in a new tab)
    Takara Sakai, Koki Satsukawa and Takashi Akamatsu
    arXiv, 2022

Contributed Articles

  1. Traffic performance analysis of road network based on congestion patterns (opens in a new tab)
    Koki Satsukawa and Kentaro Wada
    SEISANKENKYU (opens in a new tab), 71(2), 89-95, 2019 (In Japanese)
  2. Recent studies of network traffic flow modeling
    Wataru Nakanishi and Koki Satsukawa
    JSTE Magazine "Traffic Engineering" (opens in a new tab), 52(4), 33-38, 2017 (In Japanese)

Others (Invited Talks, Selected Seminars, Workshops)

  1. How much can AI remember about transportation research?
    Koki Satsukawa
    The 7th UTokyo Transport Hub Research Seminar, Workshop: AI and Transportation Research, The University of Tokyo, March 2026 (In Japanese)
  2. Adaptive dynamics of urban transport and evolutionary game theory: Dynamic analysis of traffic equilibria, control of evolution, and co-evolution of transport systems
    Koki Satsukawa
    Evolutionary Game Theory Workshop, Hiroshima University, March 2026 (In Japanese)
  3. Convergence and stability analysis of dynamic traffic assignment with atomic games
    Koki Satsukawa
    Dagstuhl Seminar 24281, Dynamic Traffic Models in Transportation Science, July 2024
  4. A study on the design of a flexible reservation system for urban transport services under uncertainty
    Koki Satsukawa, Yusuke Hara, Yosuke Kawasaki and Takamasa Iryo
    International workshop on methodologies towards sustainable and flexible city transport systems, Tohoku University (Sendai), Japan, February 2024
  5. Dynamic network traffic flow analysis and stochastic evolutionary game theory
    Koki Satsukawa and Kentaro Wada
    The Thirty-Third RAMP Symposium, Nanzan University, November 2021 (In Japanese)
  6. Modelling and control of dynamic traffic flow in mixed networks of autonomous and human-driven vehicles
    Koki Satsukawa and David Watling
    International Workshop on Control and DTA: from principles to large-scale implementation, University of Leeds (Leeds), UK, February 2020
  7. Network throughput under dynamic user equilibrium
    Koki Satsukawa
    Joint Seminar between Tongji University and the University of Tokyo and 13th International Workshop on ITS, The University of Tokyo, Tokyo, Japan, November 2018
  8. A comparative study of coordinated ramp metering strategies for complex networks
    Koki Satsukawa
    The 3rd Workshop on Intelligent Transport Systems between Tongji University and the University of Tokyo, Tongji University (Shanghai), China, October 2017
  9. Network throughput under dynamic user equilibrium: queue spillback, paradox and traffic control
    Koki Satsukawa
    Frontier of the MFD study (1), Ehime University, Japan, June 2017
  10. Traffic performance analysis of road network based on dynamic user equilibrium
    Koki Satsukawa
    The 2nd workshop on ITS between Tongji University and the University of Tokyo, University of Tokyo (Tokyo), Japan, November 2016
  11. An analysis of network throughputs for different origin-destination patterns
    Koki Satsukawa, Kentaro Wada
    7th Joint student seminar on civil infrastructure, Bangkok, Thailand, August 2015