Re: [sumo-user] Is imperfection (sigma) supported by IDM ?

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

You are correct in your understanding of the source code. IDM as implemented in SUMO is deterministic.

You can add noise using the driverState device though: https://sumo.dlr.de/docs/Driver_State.html

regards,

Jakob

Am Mi., 5. Feb. 2020 um 16:29 Uhr schrieb lourens <lourenspool@xxxxxxxxx>:

Hi,

I would like model somewhat realistic inner-city traffic.
For this prupose I would like to know if driver imperfection is supported by
IDM.

Although it is mentioned to be supported  here
<https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#car-following_model_parameters>
.
Upon first glance of the code (MSCFModel_IDM.cpp) and my own experiments,
the IDM vehicles seem to behave deterministic.

Do I oversee something and is the sigma parameter actually used in IDM ?

*My simulation settings*
-  SUMO version 1.0.1
- "--step-length", "0.5"
-   'vType carFollowModel="IDM" id="passenger_IDM" accel="0.8" decel="4.5"
maxSpeed="13.8" minGap="2.0" sigma="0.5"' guiShape="passenger" length="5" )

Thanks in advance for your help,

Lourens




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