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Backlogs? We Think Bottleneck.
In traffic, we blame slowdowns on not enough lanes.
In business, we do the same—wanting to add people, machines, or servers when things pile up … to solve a capacity constraint.
But maybe…
The issue isn’t too little; it’s too much—too much work was released too early.
What if we could fix the flow without adding more?
That’s what the Traffic Flow Simulation Game reveals.
It shows—visually and instantly—how smarter release rules can dramatically boost performance:




Backlogs? We Think Bottleneck.
In traffic, we blame slowdowns on not enough lanes.
In business, we do the same—wanting to add people, machines, or servers when things pile up … to solve a capacity constraint.
But maybe…
The issue isn’t too little; it’s too much—too much work was released too early.
What if we could fix the flow without adding more?
That’s what the Traffic Flow Simulation Game reveals.
It shows—visually and instantly—how smarter release rules can dramatically boost performance:

Developed by Dr. Alan Barnard and Dr. Benjamin Schumann, this interactive simulation turns a frustrating everyday experience—traffic jams—into a powerful metaphor for understanding flow.


Developed by Dr. Alan Barnard and Dr. Benjamin Schumann, this interactive simulation turns a frustrating everyday experience—traffic jams—into a powerful metaphor for understanding flow.
Why uncontrolled release causes gridlock (even when capacity is adequate)
How setting WIP limits instantly improves throughput and reduces delays
Why late work needs priority lanes—not more effort
How smart, adaptive release mechanisms unlock flow without adding a single resource



“This simulation doesn’t just teach flow. It makes people feel the cost of bad decisions—and the leverage of better ones.”
“Dr. Alan Barnard has another nice reflection for the simulator. He is interpreting the simulator as a production environment… The smart traffic lights concept is very similar to DBR (Drum Buffer Rope) mechanism.”
“This simulator has become my go-to opener for Agile flow workshops. It demonstrates WIP limits and release discipline more clearly than any Kanban board or velocity chart. I’ve used it with dev teams, product owners, even execs—and it clicks every time.”











© Copyright 2025 - All rights reserved - Goldratt Research Labs

© Copyright 2025 - All rights reserved - Goldratt Research Labs