Re: [sumo-user] suuport required on traffic signal issue

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

I'm not aware of a good solution except for adding intersection information to the OSM database (https://wiki.openstreetmap.org/wiki/Proposal:Intersection) which nobody is doing yet.

If you have a way of synthesizing this information (which OSM nodes belong to a common intersection?) you can load it into netconvert to improve/replace the heuristic joins: https://sumo.dlr.de/docs/Networks/PlainXML.html#specifying_and_excluding_explicit_joins

regards,

Jakob

Am Mo., 21. Juli 2025 um 09:54 Uhr schrieb Manohara C V <manohara.cv@xxxxxxxxxxxxxxxxxxx>:

Dear @Jakob Erdmann,

Thanks for your response.
I'm trying to automate this process, but users usually don’t have access to NetEdit.
Is there any alternative way to handle this, or should I go with Python scripting?
Please let me know if you have any suggestions or better approaches.

Thanks and regards,

Manohar

---

From: Jakob Erdmann <namdre.sumo@xxxxxxxxx>
Sent: 21 July 2025 13:03
To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Cc: Manohara C V <manohara.cv@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [sumo-user] suuport required on traffic signal issue

 

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The --junctions.join algorithm reaches it's limit with intersections of this complexity. I recommend manual adjustments in netedit (https://sumo.dlr.de/docs/Netedit/index.html#processing_menu_options) so that it looks something like this:

If you do not wish to simulate pedestrians, it will also help to simplify the network with something like: --keep-edges.by-vclass passenger.

Am Mo., 21. Juli 2025 um 08:43 Uhr schrieb Manohara C V via sumo-user <sumo-user@xxxxxxxxxxx>:

Dear sumo team,

I'm here to get the understanding on how to make a common signal for each junction, as of now I'm getting 3 signals, 

I'm using below command

" netconvert --osm-files osm_file.osm.xml --ramps.guess --junctions.join --junctions.join-dist 20.0 --junctions.scurve-stretch 1.0 --tls.guess-signals --tls.discard-simple --tls.join --tls.uncontrolled-within --geometry.remove -t typemap_file.typ.xml --output.street-names --output.original-names --output-file output.net.xml "

I tried increasing or decreasing the junctions.join-dist 20.0  but its making overall network worse.

Also attached the network file for your reference, I need your assistance in removing the small signals nearby , it's making the bit odd in giving the signals to vehicles.

any predefined script is there mean suggest also !

Thanks and regards

Manohar c v

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