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Re: [sumo-user] IDM, IDMM and Wiedemann CF models

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:
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 <namdre.sumo@xxxxxxxxx>To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Subject: Re: [sumo-user] IDM, IDMM and Wiedemann CF models
Message-ID:
        <CAMbUcbwgQZZsRpp74WzvVu_F69hX-NJnkrWspeLxo3fxo9HBzw@xxxxxxxxxxxxxx>
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 <
usama.elrawy@xxxxxxxxx>:

> 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 <namdre.sumo@xxxxxxxxx>
>> To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
>> Subject: Re: [sumo-user] IDM, IDMM and Wiedemann CF models
>> Message-ID:
>>         <CAMbUcbxPteVwhpXFwk6D_9oCdJ=
>> 0MihofbN-0c+uspiXrZrmeA@xxxxxxxxxxxxxx>
>> 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 <
>> usama.elrawy@xxxxxxxxx>:
>>
>> > 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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