Re: [sumo-user] SUMO crashing when an added vehicle exits

[Mirko Barthauer <m.barthauer@xxxxxxxxxxx>]

This is related to your route definition. If you want to reuse a route outside a flow, better define it outside the flow, assign it an ID and refer to that ID in the flow or when adding a vehicle by TraCI. You can find an example of such a route definition here.

 

Best regards

Mirko

 

 

 

 

-----Original-Nachricht-----

Betreff: [sumo-user] SUMO crashing when an added vehicle exits

Datum: 2023-09-09T12:17:26+0200

Von: "Didac Busquets via sumo-user" <sumo-user@xxxxxxxxxxx>

An: "sumo-user@xxxxxxxxxxx" <sumo-user@xxxxxxxxxxx>

 

 

 

Hi,

 

I have a simple TraCI scripts that add a vehicle to a network composed of a single long link.

 

The vehicle is added correctly, but when that vehicle reaches the end of the link, SUMO crashes. 

 

The script is as follows (also attached, with the rest of the required network and config files).

 

Why is it crashing?     

 

import traci

 

sumo_binary = "sumo"

sumo_cmd = [sumo_binary, "-c", "single_highway.sumocfg"]

 

traci.start(sumo_cmd)

step = 0

route_id = "!type1"

 

while step < 300:

    traci.simulationStep()

    if step == 50:

        print(f"Adding vehicle at {step} route {route_id}")

        traci.vehicle.add(vehID="added_vehicle",

                          routeID=route_id)

        traci.vehicle.setColor(vehID="added_vehicle", color=(255,0,0))

    step += 1

 

traci.close()

The error when crashing is:

 

Traceback (most recent call last):

  File "/home/didac/development/SUMO/networks/single_highway/run.py", line 12, in <module>

    traci.simulationStep()

  File "/home/didac/development/sumo-1.2.0/tools/traci/__init__.py", line 126, in simulationStep

    responses = _connections[""].simulationStep(step)

  File "/home/didac/development/sumo-1.2.0/tools/traci/connection.py", line 329, in simulationStep

    result = self._sendExact()

  File "/home/didac/development/sumo-1.2.0/tools/traci/connection.py", line 105, in _sendExact

    raise FatalTraCIError("connection closed by SUMO")

traci.exceptions.FatalTraCIError: connection closed by SUMO

(notebooks-env) didac@didac-Precision-5530:~/development/SUM

 

 

Regards,

 

   Didac

 

 

			Didac Busquets, PhD | Chief Scientist and co-founder didac.busquets@xxxxxxxxxx Sign up to our newsletter here www.immense.ai
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