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Re: [sumo-user] max-depart-delay and device.rerouting.with-taz
1) The insertion edge depends on the averaged travel times that are computed by the rerouting device. (https://sumo.dlr.de/docs/Demand/Automatic_Routing.html)
2) TAZ-Routing in the simulation is commonly used for a different purpose: by defining small TAZ that contain edges going in both directions, turnarounds at the start and the end of a trip can be avoided (because the vehicle can start/arrive in the optimal direction).
I suppose there would be some use in switching the simulation between the two behaviors (random sampling versus shortest path) but for our purposes od2trips has sufficed so far.



Am Di., 25. Feb. 2020 um 13:19 Uhr schrieb Lukas A <kitatsuab@xxxxxxxxx>:
Hi all,

I simulate heavily congested networks, and I found the results to be sensitive on the max-depart-delay parameter. This makes sense as in many cases the links are probably so congested that it cannot insert any additional vehicle, and they are backlogged for the max-depart-delay time. 

Is my understanding correct: 

If I have a network with many taz, where N_edges>>1 per taz:
- using OD2trips: a vehicle generation is random on any edge in the taz
- using device.rerouting.with-taz is NOT RANDOM but the edges which minimize travel times between the two taz are selected (according to doc: https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#traffic_assignement_zones_taz). Does that mean the insertion edge depends on the actual travel time derived from the last simulation step or is it just travel distance?

I believe that in my case, this leads to only few links actually generating vehicles, instead of the whole TAZ, which creates unrealistic results. It would be great if device.rerouting.with-taz would also insert vehicles randomly inside the taz. I find it more convenient to run device.rerouting.with-taz and not to run OD2trips every time I'd like some variation in my ODs. Or is there something, I am missing about the advantages of a non-random trip insertion in device.rerouting.with-taz?

As always, many thanks!

Lukas 
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