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Re: [sumo-user] Error: Zipper junctions with more than two conflicting lanes are not supported
Hello,
1) I could not replicated the disabled menu item. Can you give exact steps for this?
2) For the ordering-related error, see https://github.com/eclipse/sumo/issues/5640
3) Zipper junctions only support lane-drop type junctions at the moment. Real intersections with zippering are not supported at the moment. To be more precise, zipper connections that cross other connections before merging into the target lane are not supported.
Since the check for this is only done when a vehicle encounters an unsupported intersection type, it may take a while for this error to come up in your simulation.

Does the layout in your example reflect a real intersection where multi-lane roads merge without prioritization ? I was not aware that such things exist.

best regards,
Jakob



Am Mi., 15. Mai 2019 um 10:17 Uhr schrieb Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx>:

Hello all,

after a while away from sumo and simulations, I have picked this up again now. Great to see the new features! Eg. being able to edit taz items within NETEDIT is really helpful.

I have noticed:

  • when changing 'source' and 'sink' values for edges belonging to a TAZ, after hitting "Save changed", the "Save additionals" menu item stay disabled. Only after for example moving a detector can those changes then be saved to an additionals file that had been opened and saved before.
  • NETEDIT sometime saves TAZ items like this:
        <taz id="P2" shape="1183.39,406.32 1188.58,398.44 1194.54,402.09 1190.31,410.36 1183.39,406.32" color="blue">
            <tazSource weight="0.00" id="gneE120"/>
            <tazSink weight="1.00" id="gneE120"/>
            <tazSource weight="1.00" id="gneE121"/>
            <tazSink weight="0.00" id="gneE121"/>
        </taz>
    Important here is source-sink-source-sink: SUMO will be unable to read this and report an error. It seems odd that this is incorrect, because it is valid XML and the order of the items should (in my opinion) be irrelevant. Saving, closing, opening and saving again of the additionals file solves the problem: then we have source-source-sink-sink.

A question: given the junction in the picture below, SUMO complains after a while of simulation: "Error: Zipper junctions with more than two conflicting lanes are not supported". I wonder: why? How to solve this?

Thanks, greets, Menno

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