Flow Highway — Little's Law in Motion
WIP = Throughput × Lead Time | Three traffic states, side by side
⏸ PAUSE [P]
METRICS [M]
①
FREE FLOW
Low WIP →
fast, predictable
WIP
—
Thru
—
Lead T
—
②
STOP & GO
Too much WIP →
unpredictable, slow
WIP
—
Thru
—
Lead T
—
③
GRIDLOCK
WIP explodes →
everything stops
WIP
21
Thru
0/m
Lead T
∞
WIP — cars on road at once
Throughput — cars/min completed
Lead Time — seconds to cross