Dear Gergely,
it is very probably due to short gaps. So please try values of
lcAssertive > 1 to see vehicles accept shorter gaps (and thus being able to
change lanes more upstream).
Best regards
Mirko
-----Original-Nachricht-----
Betreff: Re: [sumo-user] Getting vehicles to file into correct lane ahead
of turning off
Datum: 2023-11-30T01:32:55+0100
Von: "Gergely Ferenczi via sumo-user" <[email protected]>
An: "Sumo project User discussions" <[email protected]>
Dear Mirko,
The vehicle exhibiting the cutting off behaviour are vehicle 19 (at ~2:06)
and vehicle 44 (at ~4:58). We are using SUMO version 1.14.1
Kind regards,
Gergely
From: Mirko Barthauer <[email protected]>
Sent: Wednesday, November 29, 2023 5:38 PM
To: Sumo project User discussions <[email protected]>;
[email protected]
Cc: Gergely Ferenczi <[email protected]>
Subject: AW: [sumo-user] Getting vehicles to file into correct lane ahead
of turning off
Dear Gergely,
can you please add the vehicle IDs where the problematic lane change occurs
and which SUMO version you use? I did see some strange movements at the
first time (but unrelated to what you describe) and nothing particular at
the second time. Maybe you try different values of lcAssertive
<https://sumo.dlr.de/docs/Definition_of_Vehicles%2C_Vehicle_Types%2C_and_Routes.html#lane-changing_models>
lane change parameter to control which gaps are accepted for lane change.
If the vehicles move at similar speed at high density, lane changes become
difficult because the gaps do not change much over time and are rather
short.
Best regards
Mirko
-----Original-Nachricht-----
Betreff: [sumo-user] Getting vehicles to file into correct lane ahead of
turning off
Datum: 2023-11-29T17:44:06+0100
Von: "Gergely Ferenczi via sumo-user" <[email protected]
<mailto:[email protected]> >
An: "[email protected] <mailto:[email protected]> " <
[email protected] <mailto:[email protected]> >
Dear SUMO user group,
“Long time listener first time caller.” We are using SUMO to simulate
traffic for a driving simulator and want to get realistic driving behaviour
out of it. We have a large network composed of an orbital motorway with 4
junctions, modelled on real-life junctions in the UK, and some roads in
the interior. I attached a sumoconfig of just one of these junctions that
reproduces the problem that I'm dealing with at the moment.
The problem that I'm dealing with is that some vehicles when, traversing
this junction and exiting to the left of the screen, do not file into the
appropriate lane. The oval shaped roads consist of two lanes with the left
lane being the turning lane but some vehicles, instead of filing into the
appropriate lane, race ahead in the right hand lane and cut in-front of
traffic causing a disruption to the otherwise realistic flow of traffic.
This is performed by the green car at ~2:06 and the blue car at ~4:58 in
this reproduction scenario.
We use the sublane model and run SUMO within our simulation with the
command:
sumo-gui.exe --configuration-file "<path to sumoconfig here>" --start
--quit-on-end --no-step-log --step-length "0.2" --time-to-teleport "-1"
--lateral-resolution "0.8" --collision.action "none"
I would like some advice on how to get cars to "know" that the left lane is
the turning lane and hence file in rather than change lanes last minute. Is
this to be done in the roadnetwork by something in addition to the lane
connections to specify them as turning lanes or are there some
lane-changing model parameters whose function is to tune this aspect of the
behaviour?
Kind regards,
Gergely Ferenczi
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