Thanks Jakob.

I think there is something wrong, as every time I am trying to enter a
value for "stepping", I got an error.
here you are the error:
++++++++++++++Error
Message++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
C:\Users\Usama\Desktop\SUMO_Tutorial\00_median_Uturn\Cases\test_03\case_17>s
Loading configuration... done.
Loading net-file from '00_case17_03_input.net.xml'... done (7ms).
Loading done.
Error: value '0.25' does not match regular expression facet '[+\-]?[0-9]+'
 In file '07_output_routes.xml'
 At line/column 47/403.

Quitting (on error).
+++++++++++++End of error
message+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

This error for both IDM and IDMM models.

Regards,
Usama


From: Jakob Erdmann <[email protected]>To: Sumo project User
discussions <[email protected]>

> Subject: Re: [sumo-user] IDM, IDMM and Wiedemann CF models
> Message-ID:
>         <
> cambucbwgqzzsrpp74wzvvu_f69hx-njnkrwspelxo3fxo9h...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> see the updated documentation at
>
> https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#car-following_model_parameters
>
> Am Mo., 16. Sept. 2019 um 13:14 Uhr schrieb Usama Shahdah <
> [email protected]>:
>
> > Thanks Jakob for your replay.
> >
> > What are the parameters that I need to input to SUMO for both IDM and
> IDMM
> > models? And what are the range for each parameter.
> >
> > Tanks in advance,
> >
> > Regards,
> > Usama
> >
> >
> >
> >
> > Date: Mon, 16 Sep 2019 11:05:09 +0200
> >> From: Jakob Erdmann <[email protected]>
> >> To: Sumo project User discussions <[email protected]>
> >> Subject: Re: [sumo-user] IDM, IDMM and Wiedemann CF models
> >> Message-ID:
> >>         <CAMbUcbxPteVwhpXFwk6D_9oCdJ=
> >> [email protected]>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >> IDMM uses a memory of prior speeds to adapt the desired time headway
> (see
> >>
> >>
> https://www.researchgate.net/publication/8952918_Memory_effects_in_microscopic_traffic_models_and_wide_scattering_in_flow-density_data
> >> )
> >> whereas IDM does not.
> >> The Wiedemann Parameters
> >> - security (0.5)
> >> - estimation (0.5)
> >> The model also obeys the parameters: accel, decel (only when stopping
> at a
> >> fixed position) and emergencyDecel.
> >>
> >> regards,
> >> Jakob
> >>
> >> Am Sa., 14. Sept. 2019 um 17:12 Uhr schrieb Usama Shahdah <
> >> [email protected]>:
> >>
> >> > Hi Jakob,
> >> >
> >> > In:
> >> >
> >>
> https://sumo.dlr.de/daily/userdoc/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html
> >> >
> >> > There are two IDM car-following models (IDM and IDMM). Could you
> please
> >> > let me know what are the differences between them and what are their
> >> > default parameter values. I cannot find anything regarding the IDMM
> >> model
> >> > in:
> https://github.com/eclipse/sumo/tree/master/src/microsim/cfmodels
> >> >
> >> > I will appreciate as well if you can provide me with the default
> >> > parameters for the Wiedemann (3-parameters) car-following model.
> >> >
> >> > Regards,
> >> >
> >> > --
> >> > Usama
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