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

[Ruud van Gaal <r.vangaal@xxxxxxxxxx>]

Hi Didac,

Does your 'single_highway.sumocfg' scenario open & run ok in sumo-gui?

Kind regards,

Ruud

On Sat, Sep 9, 2023 at 12:17 PM Didac Busquets via sumo-user <sumo-user@xxxxxxxxxxx> wrote:

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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