Most likely, the configured departSpeed of vehicles prevents additional
vehicles from being inserted. It would be unsafe to insert high-speed
vehicles close to queued vehicles.
If you set departSpeed="max" or departSpeed="0" the matter should resolve.
The dev-version also supports departSpeed="avg" and departSpeed="last"
which typically achieve higher insertion rate (
https://sumo.dlr.de/docs/Simulation/RoadCapacity.html#further_headway_effects
)

regards,
Jakob

Am Mo., 17. Jan. 2022 um 14:29 Uhr schrieb Radha Reddy <
[email protected]>:

> Hello Good Afternoon,
>
> For my simulations, I have utilized a 500m length road, 5m vehicle length,
> and 5m safe distance. Then the lane capacity is 500/(5+5) = 50vehicles.
>
> I have analyzed the queue length by considering the entire lane for
> several TLC control mechanisms from 0.05veh/s to 0.4veh/s where the lane
> saturates. The queue length is not growing beyond 380m, i.e., 38vehicles
> even at saturation level whatever the TLC mechanism is at 30 and 50Kmph
> speeds.
>
> I would like to know if there is something limiting the queue length not
> growing until 500m.
>
> Many thanks in advance.
>
> Regards
> Radha
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