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Re: [sumo-user] RouteSampler.py demand generation problems
  • From: "Evans, Barry" <B.Evans@xxxxxxxxxxxx>
  • Date: Mon, 6 Jul 2020 09:34:28 +0000
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  • Thread-topic: [sumo-user] RouteSampler.py demand generation problems
Hi Anil,

I haven't looked over the data but I had a similar problem when I was using routeSampler.py. One of causes I found for sever jams was to do with some vehicle routes either starting with or ending with a U-turn manoeuvre. 

What I did was run the model in the GUI and visually look for where these jams are occurring and then click on the car that I believe to be causing the jam to see if it is attempting a U-turn either at the start of its journey or the end. If it is I'd then go into the rou.xml file in a text editor like notepad++ and look at the id of the vehicle causing the jam and trim either the beginning or the end of its route accordingly to remove the U-turn manoeuvre. 

If this is the issue, removing these U-turns will help reduce jams.  I hope this helps but if not maybe someone else who is more familiar with routeSampler.py could help.

All the best,

Barry


-----Original Message-----
From: sumo-user-bounces@xxxxxxxxxxx [mailto:sumo-user-bounces@xxxxxxxxxxx] On Behalf Of anilbaral
Sent: 06 July 2020 19:23
To: sumo-user@xxxxxxxxxxx
Subject: [sumo-user] RouteSampler.py demand generation problems

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Hi all,
I have use routeSampler.py to generate demand with edge count data. The edge data was generated from the flow file and contains the hourly count on the edges with detectors.  I was successfully able to generate the vehicle using routeSampler, and the mismatch was almost negligible. However, when I run the simulation, I find a lot of jam during *peak hours*.  I have used the actuated traffic light and most probably traffic light is not the cause of traffic jams.  I am not sure how to deal with this problem. I think it is due to the routes that are being generated by routeSampler.py.  Please suggest how can I deal with these issues and what can be the probable causes?

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Thanks
Anil




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