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Feedback-based integrated motorway traffic flow control with delay balancing

Iordanidou Georgia-Roumpini, Papamichail Ioannis, Roncoli Claudio, Papageorgiou Markos

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Year 2016
Type of Item Conference Full Paper
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The development and deployment of simple, yet efficient, coordinated and integrated control tools for motorway traffic control remains a challenge. A generic integrated motorway traffic flow control concept is proposed in this paper. It is based on the combination and suitable extension of control algorithms and tools proposed or deployed in other studies, such as ramp metering or VSL (Variable Speed Limit)-enabled cascade-feedback mainstream traffic flow control, and allows for consideration of multiple bottlenecks. The new controller enables coordination of ramp metering actions at a series of on-ramps, as well as integration with VSL control actions, towards a common control goal, which is bottleneck throughput maximisation. The approach enables a pre-specified (desired) balancing of the incurred delays upstream of the employed actuators, via a suitably designed knapsack algorithm. Despite the multitude of the offered configurations, options and possibilities, the overall control algorithm remains simple, efficient and suitable for field implementation. The control algorithm is evaluated and demonstrated using a validated macroscopic traffic flow model for a number of scenarios.

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