Backpressure Control with Estimated Queue Lengths for Urban Network Traffic

Understand

Backpressure (BP) control was originally used for packet routing in communications networks.

• Since its first application to network traffic control, it has undergone different modifications to tailor it to traffic problems with promising results.
• Most of these BP variants are based on an assumption of perfect knowledge of traffic conditions throughout the network at all times, specifically the queue lengths (more accurately, the traffic volumes).
• However, it has been well established that accurate queue length information at signalized intersections is never available except in fully connected environments.