Re: [sumo-user] Traffic flow disappears after some time

[Jakob Erdmann <namdre.sumo@xxxxxxxxxxxxxx>]

The default is 24 hours (which was not documented until now).

Setting 'end' to infinity is not supported but you could set it to 10^15 (32 million years).
regards,
Jakob

2018-02-24 0:43 GMT+01:00 Jiachen Yang <jiachen_yang@xxxxxxxxxxxx>:

Thank you, Jakob, for the fast reply. That is very likely the reason. I only set a value for "probability", "begin", "departLane" and "departSpeed". I didn't include "end", so maybe there is a default value for "end" that caused the flow to stop. I couldn't find the default values in the current documentation

http://sumo.dlr.de/wiki/Definition_of_Vehicles,_Vehicle_Types,_and_Routes#Repeated_vehicles_.28Flows.29

Also, is there a way to set 'infinity' as the "end", so the flow never stops as long as the simulation is running? 

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From: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> on behalf of Jakob Erdmann <namdre.sumo@xxxxxxxxxxxxxx>
Sent: Friday, February 23, 2018 3:30:23 PM
To: Sumo project User discussions
Subject: Re: [sumo-user] Traffic flow disappears after some time

 

Hello,

<flows> have a fixed number of vehicles usually configured by setting and 'end' value along with another value describing flow rate (number, probability, vehsPerHour).

Possibly, your flow has just run out which could be prevented by changing its parameters.

regards,

Jakob

2018-02-23 23:43 GMT+01:00 Jiachen Yang <jiachen_yang@xxxxxxxxxxxx>:

Hi all,

Has anyone encountered a situation where all the defined flows in a .rou.xml file have disappeared? In other words, the entire road network becomes empty and vehicles are no longer departing. Vehicles that my code add and remove using TraCI are still working fine, but the SUMO-controlled traffic have all disappeared. The entire simulator seems to be running as normal, just without any SUMO-controlled vehicles.

I'm using all the default sumo settings listed here (http://sumo.dlr.de/wiki/SUMO), except:

--lateral-resolution 0.8

--collision.action warn

--no-step-log True

--no-warnings True

I haven't set any limit on the total number of cars allowed, and it doesn't seem like any default setting is the cause. Does anyone have ideas?

Thanks,

Jiachen

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