Advanced OR and AI Methods in Transportation PIACON-DISCON INTEGRATED APPROACH TO PUBLIC TRANSPORT PRIORITY CONTROL AT TRAFFIC SIGNALS

Giving priority to buses at traffic intersections is a common practice in busy urban areas. Benefit for buses results from reduction of their journey times and improving their service reliability. However the negative impacts of such priorities for other intersection user’s e.g. individual traffic may exceed the buses benefits. In the paper two-level dynamic intelligent traffic control feedback approach is proposed. At the upper level the multi-criteria PIACON control method trade-offs the costs and benefits of all intersection users and proposes in real-time priority option (no-priority is also an option). At the bottom level dynamic dispatching control method DISCON realize priority control mode with PIACON reference input. The presented approach is illustrated by many practical examples realized in new ITS systems environment.