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Re: [sumo-dev] latAlignment: what is the difference between compact, nice, and arbitrary? 
Hello Jakob,

all the vehicles in the screenshot are latAlignment="center" and only the motorbikes are
latAlignent="arbitrary". Given the 2 lanes, I was expecting the vehicles to queue on both lanes,
and not in the middle. Is this normal?

For the records, of I use a simple "highway" scenario, all works fine.

Cheers,
Lara

On Thu, 20 Sep 2018 12:25:11 +0200
Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

>  When using default lane-width (3.2m), vehicle widths (1.8m) and motorcyle
> width (0.8m)
> It should suffice to  give vehicles latAlignment="center" and use
> latAlignent="arbitrary" for motorcycles.
> The big advantage of this scheme is to avoid the need for
> custom-location-specific alignment (you may have to set a lower minGapLat
> for motorcycles though).
> 
> There may be cases where the motorcycles wait in parallel and block other
> vehicles.
> A solution for that would be to invent a new alignment "between" that would
> make them drive on the lane marking between lanes (with epsilon to one side
> to avoid numerical instability in determining the primary lane), whenever
> there is more than one lane.
> 
> There is actually a parameter that does location specific alignment
> (lcTurnAlignmentDistance) which makes vehicles alight left before turning
> left and right before turning right) but this is still done in a generic
> manner which does not require extra network attributes.
> 
> regards,
> Jakob
> 
> 
> 2018-09-20 12:18 GMT+02:00 Laura Bieker <bieker.laura@xxxxxxxxx>:
> 
> > Hello Lara,
> >
> > if you need this behaviour only on a vehicle base you can use the
> > Bluelight- Device ( http://sumo.dlr.de/wiki/SUMO#Bluelight_Device )*.*
> >
> > If you enable --device.bluelight.explicit *vehicleID *for this vehicle
> > the surrounding traffic is formatting a virtuall middle lane to let the
> > vehicle pass.
> > But after it has passed the vehicles drive with their old alignment.
> >
> > Best regards,
> > Laura
> >
> > Am Do., 20. Sep. 2018 um 12:03 Uhr schrieb Lara CODECA <  
> > lara.codeca@xxxxxxxxxx>:  
> >  
> >> Hello Jakob,
> >>
> >> sorry for the wrong mailing list.
> >>
> >> I need to implement middle virtual lanes for motorbikes.
> >> For example, in a 2 lanes road, the alignment on the rightmost lane is
> >> right and on the leftmost
> >> lane is left.
> >> This should create a space in the middle, and I want to see if small
> >> vehicle can use
> >> this to alleviate traffic congestion. Obviously I need to find a way for
> >> motorbikes to overtake
> >> both left and right..
> >> Maybe something similar is already done to enable blue-light vehicles to
> >> cross intersections..
> >>
> >> Alternatively, would it be possible to force an alignment on a lane-base
> >> / vehicle-base?
> >>  
> >>  ---- >>>>>>>>>>>> ----   direction  
> >> |   center alignment   |
> >> ------------------------
> >> |     left alignment   |
> >> ------------------------
> >> |    right alignment   |
> >> ------------------------
> >>
> >> In this case, if every vehicle has to respect this paradigm but
> >> motorbikes are free, I can devine
> >> places where the "virtual lane" is implemented.
> >>
> >> Thanks in advance,
> >> Lara
> >>
> >> On Thu, 20 Sep 2018 11:26:08 +0200
> >> Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
> >>  
> >> > I'm taking this to the developer list because it's probably to technical
> >> > for most users.
> >> > A good starting point is src/microsim/lcmodels/MSLCM_SL2015.cpp lines
> >> > 1683-1702
> >> > The switch uses pre-computed values from above but you should be able to
> >> > use these variables as breadcrumbs to find your way around.
> >> > If you can describe the envisioned behavior I may have ideas on where to
> >> > best merge them with the existing code.
> >> >
> >> > regards,
> >> > Jakob
> >> >
> >> > 2018-09-20 11:06 GMT+02:00 Lara CODECA <lara.codeca@xxxxxxxxxx>:
> >> >  
> >> > > Hello again,
> >> > >
> >> > > if I need to implement an additional behavior, how should I do it?
> >> > > Can I have some pointer to start digging in the SUMO code?
> >> > >
> >> > > Regards,
> >> > > Lara
> >> > >
> >> > > On Mon, 17 Sep 2018 16:31:41 +0200
> >> > > Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
> >> > >  
> >> > > > Hello,
> >> > > > the alignments are now described at
> >> > > > http://sumo.dlr.de/wiki/Simulation/SublaneModel#Model_Details
> >> > > > regards,
> >> > > > Jakob
> >> > > >
> >> > > > 2018-09-17 16:05 GMT+02:00 Lara CODECA <lara.codeca@xxxxxxxxxx>:
> >> > > >  
> >> > > > > Dear All,
> >> > > > >
> >> > > > > I'm working with the sublane model and I need an info.
> >> > > > >
> >> > > > > latAlignment: The preferred lateral alignment when using the
> >> > > > > sublane-model.
> >> > > > >               One of (left, right, center, compact, nice,  
> >> arbitrary).  
> >> > > > > http://sumo.dlr.de/wiki/Definition_of_Vehicles,_  
> >> > > Vehicle_Types,_and_Routes#  
> >> > > > > Available_vType_Attributes
> >> > > > >
> >> > > > > Left, right, and center alignments are easy to guess.
> >> > > > > What is the difference between compact, nice, and arbitrary?
> >> > > > >
> >> > > > > Thanks in advance.
> >> > > > > Lara
> >> > > > >
> >> > > > > --
> >> > > > > Lara CODECA
> >> > > > > Postdoc
> >> > > > > Tel : 04.93.00.81.51
> >> > > > >
> >> > > > > EURECOM
> >> > > > > Campus SophiaTech
> >> > > > > http://www.eurecom.fr/
> >> > > > > _______________________________________________
> >> > > > > sumo-user mailing list
> >> > > > > sumo-user@xxxxxxxxxxx
> >> > > > > To change your delivery options, retrieve your password, or  
> >> unsubscribe  
> >> > > > > from this list, visit
> >> > > > > https://dev.eclipse.org/mailman/listinfo/sumo-user
> >> > > > >  
> >> > >
> >> > >
> >> > >
> >> > > --
> >> > > Lara CODECA
> >> > > Postdoc
> >> > > Tel : 04.93.00.81.51
> >> > >
> >> > > EURECOM
> >> > > Campus SophiaTech
> >> > > http://www.eurecom.fr/
> >> > >  
> >>
> >>
> >>
> >> --
> >> Lara CODECA
> >> Postdoc
> >> Tel : 04.93.00.81.51
> >>
> >> EURECOM
> >> Campus SophiaTech
> >> http://www.eurecom.fr/
> >> _______________________________________________
> >> sumo-dev mailing list
> >> sumo-dev@xxxxxxxxxxx
> >> To change your delivery options, retrieve your password, or unsubscribe
> >> from this list, visit
> >> https://dev.eclipse.org/mailman/listinfo/sumo-dev
> >>  
> >  



-- 
Lara CODECA
Postdoc
Tel : 04.93.00.81.51

EURECOM
Campus SophiaTech
http://www.eurecom.fr/

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