NetLogo User Community Models
## WHAT IS IT?
This model makes the Braess Paradoxon visible with an agent-based approach.
## HOW IT WORKS
The agents try to minimize their traveling time from the "city" on the left to the "city" on the right. They have two or three choices, depending on whether the middle road is blocked or not.
The thick roads are highways. Overtaking is allowed as they have a much higher capacity, but they are longer than the roads. The roads are shorter, but no overtaking is allowed, so a car might lose some time behind a slower car.
## HOW TO USE IT
You can start with all three options available, let the model run to get to a steady traveling time (ideally in the Nash-Equilibrium) and then block the road to see an increase in traveling time. This works best with the default parameters of:
## THINGS TO NOTICE
Notice how the traveling time changes to a faster time with less options available.
## THINGS TO TRY
Try different numbers of vehicles to get a feeling how much traffic is necessary to make the effect visible.
## EXTENDING THE MODEL
One can extend the model by
There are many ways to extend the model. Feel free to play around!
## NETLOGO FEATURES
## RELATED MODELS
## CREDITS AND REFERENCES
made by Juergen Reiter in June 2019
(back to the NetLogo User Community Models)