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Re: [sumo-user] Question about Od2trips
Yes. By default od2trips writes evenly spaced flows when setting option --flow-output.
od2trips also supports option --flow-output.probability to write flows with attribute 'probablity' instead of 'number'. However, this only works well for flows with low rates (< 0.1 vehicles per second).
The latest development version furthermore supports option
--flow-output.poission which gives a true poisson distribution for any flow rate.

regards,
Jakob

Am Sa., 20. Juni 2026 um 01:04 Uhr schrieb Pedro Oliveira via sumo-user <sumo-user@xxxxxxxxxxx>:
Good evening everyone!

I have a question.

When establishing traffic from od2trips, the default vehicle insertion pattern follows the Poisson model, correct? This is already the function's default.

However, when establishing traffic by "flow," it follows a constant distribution, such as: if the flow is 600 vehicles in one hour, the vehicles will be inserted at a rate of 6 per second constantly, right?

As the question was clarified in another email, the routesampler used by default when generating traffic also follows the Poisson distribution.

Sds,

Pedro Oliveira

Não contém vírus.www.avast.com
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