rhumb.
A smart city's transport is one interconnected system — fleets, signals, buses, networks — and optimising the whole means searching a space that grows exponentially. Rhumb builds the digital twins and optimisation engines for that job: classical and GPU solvers today, quantum as it matures, because every problem is already written in the maths quantum computers accept.
Faithful, live road networks — real OpenStreetMap geometry, one-way systems, traffic lights and drifting congestion — built for running what-if scenarios that would be too slow, costly or risky to trial on the street.
Fleet routing, one-way constraints and live traffic compiled into a single QUBO cost model. Solvers plug in behind it: exact classical, 2-opt, simulated quantum annealing, GPU simulated bifurcation — and real quantum annealers when they earn their place.
Simulation heritage spanning 5G RAN dashboards and RIC integration, sensor-rich autonomous-vehicle scenes and city-scale logistics under disruption — the environments where optimisation matters most.
The delivery twin on this site is live code, not a video. Real central Manchester streets (4,400+ junctions), three vans, live traffic drift — and three routing strategies racing on the identical cost model, with the savings printed next to each choice. Click any strategy's ⓘ for the maths, click any street for its name and live speed.
Typical result on a full run: optimised routing beats naive nearest-neighbour dispatch by 10–13% in drive time, with return-to-depot legs included. The same pipeline scales from a browser tab to GPU clusters.
Rhumb Limited builds on two government-funded quantum programmes delivered under CGA Simulation. QATO (Quantum Annealing for Transport Optimisation, Innovate UK) formulated live routing problems for D-Wave annealers with STFC's Hartree Centre, working directly with senior members of the D-Wave team. QuEST (Quantum-Enhanced Sustainable Transportation, SBRI) examined fault-tolerant quantum computing for transport planning with Hartree and PsiQuantum, consulting authorities from Greater Manchester to Oxfordshire and the West Midlands. Rhumb holds a royalty-free licence to the QATO results — and a decade of city digital twins, 5G/RIC dashboards and driving-simulation research sits underneath it all. Industry pilots by Volkswagen, Toyota and DENSO reporting 6–26% gains say this is where transport optimisation is heading; we build the road to it.