Sumo does not allow for tapared lanes. One of the core
assumptions/constraints of the network model is that each lane has a fixed
width along it's length.
If you need smooth transitions between sections of different widths or lane
count, you must create elongated junctions (by increasing junction
attribute 'radius' or setting a custom junction shape). The smooth
transitions are then modeled via the shapes of junction-internal lanes
(which may overlap each other) and which can be customized.

Am Do., 27. Jan. 2022 um 03:00 Uhr schrieb Pradeep Viyaluru Harinath <
[email protected]>:

> Hello All,
>
>
>
> I would like to know is there a way to provide tapered lanes especially at
> the junctions were ramps are provided . Instead of having an additional
> that enters into ramps I would like to have a tapered lane that increases
> in width and reaches the width the of two lanes at the nose of ramp.
>
> Please let me know if it is possible to have such feature in sumo
>
>
>
> Regards,
>
> V.H.Pradeep
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