Hi, I hope I prepared a meaningful and minimal enough example. It can be downloaded here: https://syncandshare.lrz.de/dl/fiMpaoK6ajFTxaMLLcs5czyX/minimal_test_fishtail.zip
For example AB_counter_car.3 leaves the network straight on the second lane, whereas AB_counter_car.27 alternates between 203.88 degrees and 205.86 degrees from step 69.1 on. The alternating indicators can be seen on some of the trucks. With curved networks and more variable traffic, the effects become more obvious though. I hope that helps, let me know, if I can provide anything else. Thanks again Jakob Von: Jakob Erdmann [mailto:[email protected]] Gesendet: Dienstag, 25. Juli 2017 14:36 An: Kaths, Jakob <[email protected]> Cc: [email protected] Betreff: Re: [sumo-user] Swerving / fishtailing of vehicles when using sublane model Hello, fluctuation decisions indicate a bug in the sublane lane-change model. You can help to get this fixed by providing a minimal example scenario (the fewer vehicles and edges the better). regards, Jakob 2017-07-25 6:10 GMT+02:00 Kaths, Jakob <[email protected]<mailto:[email protected]>>: Hi, sorry to warm this topic up again. I’ve been looking a bit more into it again and I definitely see some improvement, but the behavior of the sublane model with 0.1 s step still leads to a frequent change in the sign of the yaw rate of vehicles. Furthermore, for some vehicles, there seem to be fluctuating decisions about lane changes, so each step they redecide and the indicators blink right and left alternating each step. Is this still considered a bug or just the nature of the sublane lane-change model? If the latter is the case, are there suggested parameter sets to damp this behavior? Thanks a lot for your suggestions Jakob Von: Kaths, Jakob Gesendet: Freitag, 14. Juli 2017 13:18 An: [email protected]<mailto:[email protected]> Cc: 'Jakob Erdmann' <[email protected]<mailto:[email protected]>> Betreff: AW: [sumo-user] Swerving / fishtailing of vehicles when using sublane model Sorry, I should have tried the latest developer version first. Looks a lot better on first glance! Thanks! Von: Jakob Erdmann [mailto:[email protected]] Gesendet: Donnerstag, 13. Juli 2017 14:10 An: Kaths, Jakob <[email protected]<mailto:[email protected]>> Cc: [email protected]<mailto:[email protected]> Betreff: Re: [sumo-user] Swerving / fishtailing of vehicles when using sublane model Hello, this is due to a bug which has been fixed in the latest development version. regards, Jakob 2017-07-13 8:05 GMT+02:00 Kaths, Jakob via sumo-user <[email protected]<mailto:[email protected]>>: Hi everybody, I know there have been some bugfixes in this area lately, but still I observe somewhat odd behavior when using the sublane model. Especially longer vehicles (trucks, busses) in some parts of my network seem to fishtail/swerve for no apparent reason. They perform oscillating angle changes, which makes them "wiggle" without actually changing lanes. I set the lateral resolution to 0.5, the step size to 0.1 and I'm using the SUMO 0.30.0 release. Are there any hints on how to avoid this behavior? I tried adjusting the lateral speed (to 0.1), but it doesn't help. Thanks! Jakob -- Dipl.-Ing. Jakob Kaths Technische Universität München Ingenieurfakultät Bau Geo Umwelt Lehrstuhl für Verkehrstechnik Univ.-Prof. Dr.-Ing. Fritz Busch [email protected]<mailto:[email protected]><mailto:[email protected]<mailto:[email protected]>> www.vt.bgu.tum.de<http://www.vt.bgu.tum.de><http://www.vt.bgu.tum.de/> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ sumo-user mailing list [email protected]<mailto:[email protected]> https://lists.sourceforge.net/lists/listinfo/sumo-user ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
