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

[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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