[sumo-user] ODP: Traffic Assignment

[Korczak Jerzy <Jerzy.Korczak@xxxxxxxxxx>]

Hello,

I'm interested to simulate and analyze traffic on a main artery ( about 10 intersections, 3-4 lanes on an edge). To eliminate not related junctions and connections I had closed the edges out of the artery, leaving only the closest junctions to the artery. During simulation many traffic jams  appeared because of vehicles trying to turn into the closed edges, and block others.  Maybe I should cut/delete the junctions/edges in an another way? 

Thank you in advance for advice.

Best regards,

Jerry

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Od: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> w imieniu użytkownika behzad bamdad mehrabani <bm.bamdad@xxxxxxxxx>
Wysłane: piątek, 20 marca 2020 13:46
Do: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Temat: Re: [sumo-user] Traffic Assignment

 

Thank you very much 

On Fri, Mar 20, 2020 at 12:57 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

https://www.researchgate.net/publication/296846245_Comparison_of_User_Equilibrium_UE_and_System_Optimum_SO_Traffic_Assignment_Methods_for_Auto_Trips

Am Fr., 20. März 2020 um 12:17 Uhr schrieb behzad bamdad mehrabani <bm.bamdad@xxxxxxxxx>:

Thank you very much. I would be happy if you could send me any document regarding how to change user equilibrium to system optimal algorithm. 

Regards, 

On Fri, Mar 20, 2020 at 11:42 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Correct. There is currently no tool in SUMO that would find the system optimum for you directly.

However, you should be able to hook into the UE assignment iteration and swap out average travel times with your own estimate of marginal travel times to approach the SO as described in the literature.

regards,

Jakob

Am Fr., 20. März 2020 um 11:19 Uhr schrieb behzad bamdad mehrabani <bm.bamdad@xxxxxxxxx>:

Dear Jakob, 

Thank you very much for your reply. I found only the User Equilibrium (UE) assignment, and there is no System Optimal (SO) Assignment, am I right?

Regards, 

On Fri, Mar 20, 2020 at 10:48 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

Hello,

all the algorithms of SUMO are open source. (https://github.com/eclipse/sumo)

The traffic assignment is chiefly done in a microscopic fashion (because SUMO is predominantly a microscopic simulation) but there also exists an application for macroscopic assignment. For details, see https://sumo.dlr.de/docs/Demand/Dynamic_User_Assignment.html

regards,

Jakob

Am Do., 19. März 2020 um 12:28 Uhr schrieb behzad bamdad mehrabani <bm.bamdad@xxxxxxxxx>:

Hello Dear All, 

I would be happy if you could answer the following questions: 

1. I want to run a macroscopic dynamic system optimal traffic assignment in which I can embed a criterion for the traffic assignment algorithm solution.  
Is it possible to do so in SUMO?

-is the traffic assignment algorithms' source code available in SUMO?

If so, How? 

Regards, 

--

Behzad Bamdad Mehrabani

Ph.D. Candidate, UCLouvain, Faculty of Architecture, Architectural Engineering and Urban Planning, Tournai, Belgium

https://uclouvain.be/en/directories/behzad.bamdad

E-mails: bm.bamdad@xxxxxxxxx

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Ph.D. Candidate, UCLouvain, Faculty of Architecture, Architectural Engineering and Urban Planning, Tournai, Belgium

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Behzad Bamdad Mehrabani

Ph.D. Candidate, UCLouvain, Faculty of Architecture, Architectural Engineering and Urban Planning, Tournai, Belgium

https://uclouvain.be/en/directories/behzad.bamdad

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Behzad Bamdad Mehrabani

Ph.D. Candidate, UCLouvain, Faculty of Architecture, Architectural Engineering and Urban Planning, Tournai, Belgium

https://uclouvain.be/en/directories/behzad.bamdad

E-mails: bm.bamdad@xxxxxxxxx

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cell: (+32) 497 29 22 14