hello Jakob,
yes but I want to calculate travel time in each time step and optimize it
and I think fcd output can not change vehicles' positions dynamically.
to compute travel time for each vehicle in Traci I used this code:
while step < 14000:
traci.simulationStep()
for id in traci.vehicle.getIDList():
pos0 =traci.vehicle.getPosition(id)[0]
speed0 =traci.vehicle.getSpeed(id)
step += 0.4
traci.simulationStep()
pos1 =traci.vehicle.getPosition(id)[0]
speed1 =traci.vehicle.getSpeed(id)
if speed1 == 0:
avgTT = 0
else:
avgTT =(pos1-pos0)/speed1
avgTT_list.append(avgTT)
print(avgTT_list)
step += 0.4
but after some time step sumo raise this error
raise TraCIException(err, prefix[1], _RESULTS[prefix[2]])
traci.exceptions.TraCIException: Vehicle '1.3' is not known.
how can I fix it and do you have any suggestions for calculating the travel
time of each vehicle in each time step?
On Wed, Mar 2, 2022 at 10:00 AM Jakob Erdmann <[email protected]> wrote:
> Have you considered using fcd-output?
> The simplest (though not the most efficient) way to retrieve data from all
> vehicles is by looping over the list of all ids:
>
> for vehID in traci.vehicle.getIDList():
> traci.vehicle.getPosition(vehID)
>
> Am Di., 1. März 2022 um 14:59 Uhr schrieb amir kr <[email protected]>:
>
>> Hello everyone,
>> I want to get the position of all vehicles in each step time but when I
>> want to use traci.vehicle.getPosition(VehID) I do not know what to put
>> instead of VehID because I want to get the position of all vehicles. how
>> can I fix it ?
>> best regards,
>> Amir,
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