Classic and contemporary transportation research, translated into visual mechanisms you can watch, question, and explore.
What changes when research becomes something we can observe?
Start with a familiar road. Follow the ideas outward.
Waves, queues, bottlenecks, and the laws behind moving traffic.
Signals, conflicts, and the timing of shared space.
Routes, equilibrium, pricing, and system-wide effects.
How service design shapes waiting, transfers, and capacity.
Matching, fleets, and the economics of on-demand travel.
Routing, delivery, inventory, and supply chains.
The incentives and rules that change travel behavior.
Rail, aviation, maritime, and their operating mechanisms.
Learning from transport data and testing intelligent systems.
Building an extra road sounds like an unambiguous improvement. Braess's paradox shows why that intuition can fail when drivers independently choose the route that seems fastest to them. A new link changes everyone's incentives, and the resulting route changes can overload roads that previously worked well.
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A green signal should help clear a queue, but sending vehicles into a full downstream road can simply move congestion into the next junction. Max-pressure control considers both sides of an intersection: the vehicles waiting to enter a movement and the space or queue conditions where they would emerge.
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Bus bunching can begin with a very small delay. A bus that reaches a stop late finds more passengers waiting, spends longer boarding them, and falls farther behind. The following bus encounters fewer waiting passengers and catches up. The original even spacing can collapse into a pair of buses followed by a long gap.
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A delivery truck can carry many parcels, but visiting every address may force it through a long sequence of local detours. Small drones create another option: the truck remains the mobile base while drones serve selected nearby stops and return to meet it.
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A road does not evolve in isolation. Speed on one link can be affected by traffic arriving from upstream, queues spilling back from downstream, and conditions on neighboring links. Forecasting several steps ahead therefore requires more than extending each road's own recent trend.
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