City traffic signals, coordinated
Signal phases optimised across a city network in simulation: about 20% less vehicle waiting time than the conventional method. A 2020 simulation study delivered through our platform network with a quantum-inspired optimiser; not a field trial.
Impact
The problem
Signal timings set junction by junction leave traffic backing up across the network. Coordinating them is a large combinatorial problem the conventional method handles locally.
Our approach
Signal phases across the network were optimised together with a cloud quantum-inspired optimiser and the vehicle waiting time measured in a traffic simulator against the conventional method.
The evidence
- −20% vehicle waiting time against the conventional method; simulation; quantum-inspired optimiser; 2020.
- Not claimed: a field result, or a quantum-hardware contribution.
Status: Platform network + Simulation. Delivered through our platform network; quantum-inspired optimisation; simulation, 2020; not a field trial.