I've never used Plexe and can only guess how  setFixedLane is implemented.
My guess is that when using laneIndex > 0 this would make the vehicle move
to the inside lane of the roundabout and keep it there.


Am Fr., 22. Apr. 2022 um 07:59 Uhr schrieb Ankit Jatiya <akj0...@gmail.com>:

> But when a vehicle enters roundabout then also it is changing lane, but
> there is no problem. Only problem is while exiting the roundabout.
>
> On Fri, Apr 22, 2022, 11:24 AM Jakob Erdmann <namdre.s...@gmail.com>
> wrote:
>
>> Vehicles typically have to move to the outer lane to exit the roundabout.
>> This means you must allow some lane changing while inside the roundabout.
>> One solution would be to let your management system trigger the change to
>> the outside lane using traci.vehicle.changeLane.
>>
>> Am Fr., 22. Apr. 2022 um 07:49 Uhr schrieb Ankit Jatiya <
>> akj0...@gmail.com>:
>>
>>> Hello,
>>>
>>> I am trying to implement a roundabout management system in SUMO.  I want
>>> to keep lanes fixed for vehicles.such that vehicles that want to go
>>> straight are in middle lane, those who want to turn right are in right lane
>>> and those who want to turn left are in left lane.
>>> I tried using plexe.setFixedLane but it has a problem. Vehicle enter the
>>> roundabout successfully but when it is time to leave the roundabout, it
>>> gets stuck just before leaving the roundabout in its lane.
>>> Is there some other way to keep lane fixed which avoid this problem?
>>>
>>> Thank You & Regards
>>>
>>> Ankit
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>>> sumo-dev@eclipse.org
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