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Re: [sumo-user] fundamental diagram
1) can you post your VSS definition?
2) Since density is increased by vehicle insertions which are discrete events there is some limit to the achievable smoothness. You could "cheat" by using more VSS though.

Am Fr., 3. Juli 2020 um 23:28 Uhr schrieb Amirhosein Karbasi <amirhosein.karbasi98@xxxxxxxxx>:
hello,
I want to build a fundamental diagram for 2 lane freeway. I don't have any problem with the free-flow branch but I have a problem with the congested branch. 
1.for the congested branch, I used VSS to increase density but it does not work correctly. for example, VSS from 1000 to 1500 is 23 and from 1501 to 2000 is 22 and from2001 to 2500 is 21. but in my simulation from 1000 to 1500 is okay but from 1500 to 2500 speed returns to the situation without VSS.
2. is there any way to decrease flow smoothly to zero after it reaches its capacity?
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