Quantum inspired Traffic Light Optimization
summary
A port traffic experiment uses Nagel‑Schreckenberg cellular automaton and PTV Visum plus Fujitsu’s Quantum-inspired optimization pipeline to choose signal programs across 35 intersections and 100+ km of lanes. A 5‑intersection proof of concept runs local predictions in ~3 s, assembles a QUBO and solves it in under 1 s on a Digital Annealer (8,000 bits), yielding >20% average travel‑time savings and ~9% CO2 reduction versus fixed‑time control while meeting a 10 s reaction target.
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chapters (8)
- 0:00Intro
- 0:59The Challenge
- 2:14Local Actuated Signal Control Improve traffic flow • Local monitoring • Rule based control decisions • Changed traffic light settings
- 3:32Local Exploration - Global Combination
- 10:38Evaluation
- 12:55Over 20 % Travel Time Savings Possible
- 14:56Effect on Carbon Footprint
- 16:07Achievements / Outlook
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