Please check whether the problems persists when changing carFollowModel="W99" to "Krauss". Either way, the video suggests that there is a bug somewhere and I'd ask you to provide input files for reproducing the jumpy behavior.
Am Fr., 18. Feb. 2022 um 16:43 Uhr schrieb Ahmad Abdallah via sumo-user < [email protected]>: > Thanks for your response, Jakob. > > The problem with reducing lcAssertive to smaller values as it seems to me > is that in some cases merging vehicles coming from on-ramps won't find a > long enough gap to merge before the end of the acceleration lane, and this > creates a repetitive stopping and bottleneck instances downstream of > merging segments. I noticed that even if I set high values for lcStrategic > this problem keeps happening. I thought this is probably linked to the min > gap parameters, but I'm using the default *tau*(which I believe is low > enough) and here are my parameters for the car following and lane > changing models. Do you see any other sources of trouble? > > [image: image.png] > > One other problem that I'm facing is lateral instability. I am not sure if > this is the correct term, but basically in some occasions vehicles tend to > perform a series of lane changes within a few seconds time frame, > especially upstream of the location of the major bottleneck location > (interchange) in the freeway I'm simulating . It looks as if these > vehicles(drivers) are hesitant and cannot decide which lane to drive in. I > think in most cases the cause of those abrupt lane changes is the > LcSpeedGain parameter. However, this parameter has proved vital in getting > vehicles to shift to lanes with less traffic density when being in a more > congested lane. I'm attaching a short recording which displays this > problem. Any thoughts? > > > Best regards, > Ahmad Abdallah. > > > On Thu, Feb 17, 2022 at 11:33 AM Jakob Erdmann <[email protected]> > wrote: > >> lcAssertive 30 is quite likely to cause this. It reduces the acceptable >> gap size by a factor of 30 and thus causes lane-changing into short gaps >> that are very unsafe. >> I'd recommend keeping lcAssertive well below 2 (though even a value of >> 1.1 may cause collision in exceptional circumstances). >> >> Am Do., 17. Feb. 2022 um 16:09 Uhr schrieb Ahmad Abdallah via sumo-user < >> [email protected]>: >> >>> Hello, >>> >>> >>> >>> While running a simulation in SUMO, I am facing a problem which is that >>> vehicles are colliding and running over each other when changing lanes, as >>> shown in the attached picture. Do you have any idea how I can solve this >>> problem? Could it be due to high LcAssertive value? I am currently using 30. >>> >>> >>> >>> To give more context, I just disabled the teleporting when colliding >>> option. So now I only get warnings when vehicles collide and no teleporting >>> is done except in instances of gridlocks. >>> >>> >>> [image: Sumo_Snippet.jpg] >>> >>> Best regards, >>> Ahmad Abdallah. >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> To unsubscribe from this list, visit >>> https://www.eclipse.org/mailman/listinfo/sumo-user >>> >> _______________________________________________ >> sumo-user mailing list >> [email protected] >> To unsubscribe from this list, visit >> https://www.eclipse.org/mailman/listinfo/sumo-user >> > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
_______________________________________________ sumo-user mailing list [email protected] To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
