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Re: [sumo-user] CitiMobile tutorial - person jam and collisions
state 1 (waiting) is only used when the person is in a <stop> stage (and thus waiting for a specific duration/end time)
state 3 (driving) encompasses everything that belongs to the riding stage (and this includes waiting for the vehicle)

Am Di., 31. Mai 2022 um 11:21 Uhr schrieb Manish Chaturvedi <msc.nit@xxxxxxxxx>:
Thank you Jakob for your reply.

I have another question.

I define a person trip as follows:
    <person id="person11" depart="0.00" departPos="0" color="green">
        <walk from="-gneE1" to="gneE0" arrivalPos="10"/>
        <ride from="gneE0" to="gneE2" lines="taxi"/>  
    </person>

At every simulation step, I repeatedly check the state of the person using the following traci call

personState = traci.person.getStage(personID).type 



While the person is walking, the personState value is 2 which matches with the documentation. 

After completion of the walk I expect the state to change to 1 ("Waiting" for a taxi) as the person is now waiting for a taxi.  The  SUMO-GUI shows  the state Waiting for Taxi correctly,  however the traci.person.getStage(personID).type returns 3 (driving) immediately after the person completes  the walk.

Am I missing something? Please advise.

Regards,
Manish


On Mon, 30 May 2022, 15:12 Jakob Erdmann, <namdre.sumo@xxxxxxxxx> wrote:
The 'jamming' happens by design when the number of waiting persons exceeds the capacity of a busStop. In this case persons cannot enter the stop and become 'jammed' on the sidewalk.  Thus, the warning is generally not a problem.

However, there seems to be some needless jamming on top of that: https://github.com/eclipse/sumo/issues/10822 
And the reported collisions could be a collateral of that: https://github.com/eclipse/sumo/issues/10823

regards,
Jakob

Am Fr., 27. Mai 2022 um 14:09 Uhr schrieb Manish Chaturvedi <msc.nit@xxxxxxxxx>:
Dear SUMO users,

When I run the Citi mobile tutorial, after some time (approx 600 seconds), it shows warning messages   "person <ID> jammed on edge <ID> Time=XX:"  ; 

Also, there are few warnings of the form "Collision of Person <ID> and Person <ID> on Lane=XX , Time=XX"; which increases significantly towards the end of the simulation specifically when no bus is available. 

What is the cause of this warning? Does it represent some error in the scenario? Please suggest.

Regards,

Manish 
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