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Home / Proceedings / Proceedings of the International Conference on Automated Planning and Scheduling

Schedule-Driven Coordination for Real-Time Traffic Network Control

February 1, 2023

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Authors

Xiao-Feng Xie,Stephen Smith,Gregory Barlow

Carnegie Mellon University,Carnegie Mellon University,Carnegie Mellon University


DOI:

10.1609/icaps.v22i1.13510


Abstract:

Real-time optimization of the dynamic flow of vehicle traffic through a network of signalized intersections is an important practical problem. In this paper, we take a decentralized, schedule-driven coordination approach to address the challenge of achieving scalable network-wide optimization. To be locally effective, each intersection is controlled independently by an on-line scheduling agent. At each decision point, an agent constructs a schedule that optimizes movement of the observable traffic through the intersection, and uses this schedule to determine the best control action to take over the current look-ahead horizon. Decentralized coordination mechanisms, limited to interaction among direct neighbors to ensure scalability, are then layered on top of these asynchronously operating scheduling agents to promote overall performance. As a basic protocol, each agent queries for newly planned output flows from its upstream neighbors to obtain an optimistic projection of future demand. This projection may incorporate non-local influence from indirect neighbors depending on horizon length. Two additional mechanisms are then introduced to dampen ``nervousness'' and dynamic instability in the network, by adjusting locally determined schedules to better align with those of neighbors. We present simulation results on two traffic networks of tightly-coupled intersections that demonstrate the ability of our approach to establish traffic flows with lower average vehicle wait times than both a simple isolated control strategy and other contemporary coordinated control strategies that use moving average forecast or traditional offset calculation.

Topics: ICAPS

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HOW TO CITE:

Xiao-Feng Xie,Stephen Smith,Gregory Barlow Schedule-Driven Coordination for Real-Time Traffic Network Control Proceedings of the International Conference on Automated Planning and Scheduling (2012) 323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow Schedule-Driven Coordination for Real-Time Traffic Network Control ICAPS 2012, 323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow (2012). Schedule-Driven Coordination for Real-Time Traffic Network Control. Proceedings of the International Conference on Automated Planning and Scheduling, 323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. Schedule-Driven Coordination for Real-Time Traffic Network Control. Proceedings of the International Conference on Automated Planning and Scheduling 2012 p.323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. 2012. Schedule-Driven Coordination for Real-Time Traffic Network Control. "Proceedings of the International Conference on Automated Planning and Scheduling". 323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. (2012) "Schedule-Driven Coordination for Real-Time Traffic Network Control", Proceedings of the International Conference on Automated Planning and Scheduling, p.323-331

Xiao-Feng Xie,Stephen Smith,Gregory Barlow, "Schedule-Driven Coordination for Real-Time Traffic Network Control", ICAPS, p.323-331, 2012.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. "Schedule-Driven Coordination for Real-Time Traffic Network Control". Proceedings of the International Conference on Automated Planning and Scheduling, 2012, p.323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. "Schedule-Driven Coordination for Real-Time Traffic Network Control". Proceedings of the International Conference on Automated Planning and Scheduling, (2012): 323-331.

Xiao-Feng Xie,Stephen Smith,Gregory Barlow. Schedule-Driven Coordination for Real-Time Traffic Network Control. ICAPS[Internet]. 2012[cited 2023]; 323-331.


ISSN: 2334-0843


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