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Re: [sumo-user] Issue with Changing Traffic Light Type from 'Static' to 'NEMA' in SUMO NetEdit
I found the NEMA type in Netedit is not working. A temporary solution is to code the signal definition in an additional file following the instructions/examples in this page: https://sumo.dlr.de/docs/Simulation/NEMA.html. I got a new project that allows me to work on SUMO again. We are affected by a freeze for new projects. I may have some time once the freeze lifts to work on this again.

Thanks,
Qichao

On Wed, Feb 5, 2025 at 5:44 AM Karagounis Vassileios via sumo-user <sumo-user@xxxxxxxxxxx> wrote:

Dear all,

 

While changing the traffic light type from 'static' to 'NEMA' in SUMO NetEdit, the process did not complete successfully. 
Instead, the program saved the type as 'Actuated' as a fallback, rather than 'NEMA'.

 

The warning message we encountered states:
"Generating NEMA phases is not supported for traffic light 'tls' with 8 incoming edges. Using tlType 'actuated' as fallback."

 

Additionally, upon reviewing the C++ code, we noticed that in the process of grouping opposite edges, a value of 135 degrees is used. 
This occurs in the file "NBOwnTLDef.cpp", at line 400. Could you clarify the reason for using this specific value?

 

For reference, I have attached two .net files that may be useful for troubleshooting.

 

Thank you for your assistance.



Με φιλικούς χαιρετισμούς / Kind Regards

Vasilios Karagounis
Software Engineer
Center for Research and Technology Hellas (CERTH)
Hellenic Institute of Transport (HIT)

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