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Re: [sumo-user] Question about the model
  • From: Michael Behrisch <oss@xxxxxxxxxxx>
  • Date: Mon, 13 Jul 2020 16:27:58 +0200
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Hi,
it is called "car following" because it describes only the longitudinal
behavior but not lane change and other lateral movements. Also right of
way rules and other aspects of moving over a junction are not modelled here.

Best regards,
Michael

Am 12.07.20 um 03:15 schrieb Biplav Choudhury:
> Thanks for the quick response. I read the paper
> <https://link.springer.com/chapter/10.1007%2F978-3-319-15024-6_7> where
> the modifications on the default Krauss model are described. One other
> question that I have is /why is it called a car following model/, as
> /car following/ refers to some sort of platoon where there is a leader
> and there are follower vehicles. Vehicles can overtake their leaders as
> per the paper
> <https://link.springer.com/chapter/10.1007%2F978-3-319-15024-6_7>, so it
> doesn't appear as a platoon scenario.
> 
> In short, are /car following/ mode (the default model in SUMO) ls a
> general mobility model or does it represent a specific scenario ?
> 
> On Sat, Jul 11, 2020 at 7:48 PM <Olaf.BanseBueno@xxxxxx
> <mailto:Olaf.BanseBueno@xxxxxx>> wrote:
> 
>     Hi Biplav,
> 
> 
>     "The default model is a modification of the model defined by Stefan
>     Krauß" (https://sumo.dlr.de/pdf/KraussDiss.pdf)
> 
> 
>     https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#default_krauss_model_description
> 
> 
>     https://sumo.dlr.de/docs/Definition_of_Vehicles,_Vehicle_Types,_and_Routes.html#car-following_models
> 
> 
> 
>     ------------------------------------------------------------------------
>     *Von:* sumo-user-bounces@xxxxxxxxxxx
>     <mailto:sumo-user-bounces@xxxxxxxxxxx>
>     <sumo-user-bounces@xxxxxxxxxxx
>     <mailto:sumo-user-bounces@xxxxxxxxxxx>> im Auftrag von Biplav
>     Choudhury <biplav93@xxxxxxxxx <mailto:biplav93@xxxxxxxxx>>
>     *Gesendet:* Samstag, 11. Juli 2020 23:48:50
>     *An:* sumo-user@xxxxxxxxxxx <mailto:sumo-user@xxxxxxxxxxx>
>     *Betreff:* [sumo-user] Question about the model
>      
>     When I do not specify any vehicle following model and only specify
>     the speeds and acceleration, what is the mobility model used ?
> 
>     I use -
> 
>     <routes>
>        <vType id="car" type="passenger" length="5" maxSpeed="25" accel="1" decel="1" sigma="0"/>
>        <flow id="carflow" type="car" beg="0" end="0" number="50" departPos="free" from="edge1" to="edge2" />
>     </routes>
> 
> 
>     So what is the mobility mode used in my model ?
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