🚲 Bike Network Planner: Protected Lanes, Safety-Weighted Routes and Mode Share

Upgrade streets to painted or protected bike lanes on a small city graph and watch cyclists re-route by perceived stress, commuters re-choose between bike, car and bus, and congestion settle to an equilibrium within a fixed budget.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install