Great, thanks for the answer and for creating a ticket!
 
Von: Jakob Erdmann <namdre.s...@gmail.com> 
Gesendet: Montag, 18. November 2019 15:25
An: Jakob Kaths <jakob.ka...@tesis.de>; Sumo project User discussions 
<sumo-user@eclipse.org>
Betreff: Re: [sumo-user] "Set custom connection shape" causes very slow and 
overlapping vehicles in junction area
 
The offending connection has a broken z-profile. The first and last points are 
at z-level 230 whereas the middle points are at z-level 0. This gives the 
connection a length of 460m and makes the vehicles look slow while traversing  
the intersection.
The root cause is https://github.com/eclipse/sumo/issues/6275
 
Am Mo., 18. Nov. 2019 um 11:49 Uhr schrieb Jakob Kaths <jakob.ka...@tesis.de>:
Hi everybody,
 
in our workflows we often convert OpenDRIVE files to SUMO networks for 
Co-Simulation, which generally works quite well. However, the shapes of lanes 
in junction areas are simplified during the net conversion. To readjust them 
manually, we use the “Set custom connection shape” function of NETEDIT (e.g. to 
avoid vehicles driving over traffic islands). Sometimes, this causes major 
problems in the junction area, where vehicles get very slow and start 
overlapping each other etc. Are these issues known and is there a workaround 
(sometimes fixing the junction shape accordingly helps, but it’s less flexible 
and comfortable). I attached a working example of a junction in which I 
readjusted the right-turn coming from north.
 
All the best

Jakob
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