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Re: [sumo-user] Modify pedestrian dynamic model
(i) you can define different types of pedestrians (i.e. name S,N,D, etc) and assign different maximum speeds
(ii) complex group behavior as described is quite far from the current models. What is the main goal here?
    - accurate travel times for persons (might work by making some persons slower)
    - accurate travel times for AGV (might work by making some persons "bigger")
    - temporary formation of pedestrian groups that block a bigger part of the floor space (assemble, cross, disperse)?
    - realistic looking visualization?
My guess is that the latter two points would be quite involved to model and implement.

(iii) gap acceptance in sumo currently has no way to take platoons length into account. The pedestrian behavior is using similar methods as that used by cars coming from a minor road and this only looks at the closest oncoming car. SUMO does allow some hooks to purposefully ignore conflicts and you might use this to tune the gap acceptance (https://sumo.dlr.de/docs/Definition_of_Vehicles%2C_Vehicle_Types%2C_and_Routes.html#transient_parameters)

regards,
Jakob

Am Mo., 21. Nov. 2022 um 06:03 Uhr schrieb Thanhnt Nguyen <thanhnt.fit@xxxxxxxxx>:
Thank you Mr.Jakob
Let me briefly introduce my healthcare environment: individuals move with AGV. The AGVs are only to transfer materials in the environment (a flat floor) like the following picture. AGV might meet pedestrians who include: staff (S for short), visitor (V for short), patients - move like normal (N for short) and individuals with disabilities (D for short)


Therefore I need some improvement:
(i) in XML, the personFlow needs new attributes, for example: disable (a probability indicates the person is D or not). If a pedestrian is D type, he might have a stick or crutch or wheeled-chair or even he is bind.
(ii) In the intersection, D person (who has a slower velocity) might be carried by other S, V or even N people for crossing, especially as the D is moving in a crossway. After leaving the crossway, D person could be left alone.
(iii) A pedestrian will have different gap acceptance (a distance between person to the AGV). If the distance is too short, he/she would decide to stay at the waiting area.
image.png

The gap acceptance of a pedestrian depends on yielding of vehicle (too loud or not), healthy of the person as well as the number of AGV's platoon
Looking at the code of Omnet++ and SUMO, I still don't know which files to modify. If it is too difficult to change the code, perhaps I have no choice but to use a quick and dirty hack to get my purpose.
Thank you in advance

On Sun, Nov 20, 2022 at 9:51 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
Some comments:
- the paper ""Modelling pedestrian dynamics in SUMO" doesn't describe the whole set of vehicle/pedestrian interactions that are currently implemented
- the SUMO team is currently engaged with the integration of "social force" style pedestrian models by way of JuPedSim (jupedsim.org), https://github.com/eclipse/sumo/tree/jupedsim

Can you describe the interactions that you need to simulation in more detail?



Am So., 20. Nov. 2022 um 14:41 Uhr schrieb Thanhnt Nguyen <thanhnt.fit@xxxxxxxxx>:
Dear all
As reading the papers: "Modelling pedestrian dynamics in SUMO" and "Pedestrian Simulation In SUMO Through Externally Modelled Agents" I notice that the current pedestrian model in SUMO is very simple.
In my work, I need a pedestrian model which reflects a healthcare environment. In this model, I intend to implement interaction between vehicles (Automated Guided Vehicle) as well as individuals with disabilities
I still don't know how to implement a new pedestrian model in SUMO, could I need to modify the code of Viens?
Does anyone have a hint for me by chance?
Thank you in advance

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Nguyen Tien Thanh
Department of Software Engineering
School of Information and Communication Technology (SoICT, http://www.fit.hut.edu.vn)
Hanoi University of Technology (HUT, http://www.hut.edu.vn)
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