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Re: [sumo-user] Vehicle type in TraCI
Dear Jakob,
Thank you in advance for the useful information. in the following, I want to change the class of the vehicle added after copying the vType_1 , for instance, to taxi. So, I used these methods as follows:

       if step == 20:
         traci.vehicle.add('vehicle_0','route_0','vType_0')
      if step == 30:
         traci.vehicletype.copy('vType_0','vType_1')
         traci.vehicle.add('vehicle_1','route_0','vType_1')
         traci.vehicletype.setVehicleClass('vType_1','taxi')
         traci.vehicletype.setShapeClass('vType_1','passenger')  
But the vehicle class of the vType_1 vehicle remains as same as the vehicle class of the vType_0 vehicle when the simulation is run in GUI. I would be thankful for any point in this case.

Regards,
Ali


On Wed, Apr 28, 2021 at 4:18 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
whenever you copy a type, the id of the new type must not have been used before. In your case vType_1 already exists because you loaded it from xml.

Am Mi., 28. Apr. 2021 um 13:01 Uhr schrieb ali mirzaei <alimrz222@xxxxxxxxx>:
Dear Jakob,
After your hint, I changed my code as follow:
      if step == 20:
           traci.vehicle.add('vehicle_0','route_0','vType_0')
      if step == 30:
           traci.vehicletype.copy('vType_0','vType_1')
           traci.vehicle.add('vehicle_1','route_0','vType_1')
simultaneously, I added new type in .rou.xml file :
<vType id="vType_0" vClass="passenger"/>
    <vType id="vType_1" vClass="taxi"/>
After running the script, the Error: Answered with error to command 0xc5: could not add type vType_1 stopped the simulation.
Then, what is wrong with my job.

Thank you,
Ali






On Wed, Apr 28, 2021 at 2:16 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
traci.vehicletype.copy("DEFAULT_VEHTYPE", "newType")
traci.vehicletype.setMaxSpeed("newType")  # or whatever attributes you wish to define
traci.vehicle.add("v0", "route_0", "newType")

Am Mi., 28. Apr. 2021 um 11:34 Uhr schrieb ali mirzaei <alimrz222@xxxxxxxxx>:
Hi everyone,
Let me explain what I mean with an example.
         traci.vehicle.add('vehicle_0','route_0','vType_0')   
This is a piece of my script in which vType has been defined in advance in .rou.file by <vType id="vType_0" vClass="trailer"/> .
I am looking for a method to define vType directly via TraCI without having to pass through the .rou.xml file. 

Regards,
Ali

On Tue, Apr 27, 2021 at 11:29 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
You can use traci.vehicletype.copy to create a new type from an existing one and then modify it's attributes as needed.

Am Di., 27. Apr. 2021 um 18:57 Uhr schrieb ali mirzaei <alimrz222@xxxxxxxxx>:
Hi everyone,
Is it possible to define a vehicle type in TraCI directly or it must be pre-registered in route file?

Regards,
Ali
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