F

FlowLab

Build roads, control junctions, close lanes, and watch congestion propagate.

Paused Drag junction = move/snap · Shift+drag junction = road · Road-to-road = auto junction
R/C edgefreebusyover
00:00
SHORTCUT EXPERIMENT
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Run the network, then open the connector. Close and reopen individual lanes to create residual shockwaves.