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Re: [sumo-user] Subject: Questions Regarding Pedestrian Simulation in SUMO

Dear Mirco,

Thank you very much for your excellent response. The example networks you provided have been extremely helpful to me.

However, despite these resources, I am still unable to get pedestrians to walk in both directions on the link in the example file I created.

I noticed a few differences between your network and mine:

  1. Connectors: In your network, no separate connectors are specified. However, in my case, the simulation does not run unless I explicitly define the connectors.
  2. Coloring Schemes: When I access Edit Coloring Schemes, I see that you can modify the shape under the persons category. However, in my case, the shape is modified under the vehicles category instead.

I have attached my example file for your review. I would be sincerely grateful if you could take a look and offer any guidance or suggestions to resolve these issues.

Thank you in advance for your time and support.

Best regards,

Min



2024년 12월 10일 (화) 오후 11:00, Jakob Erdmann via sumo-user <sumo-user@xxxxxxxxxxx>님이 작성:
You can approximate the effect of gradients by setting a speed limit on the pedestrian lanes.

Am Di., 10. Dez. 2024 um 14:06 Uhr schrieb Mirko Barthauer via sumo-user <sumo-user@xxxxxxxxxxx>:

Dear Min,

 

I assume you use the pedestrian "striping" model (see docs). Please study these example networks where you can see pedestrians walking in both directions and overtaking each other. The gradient can be modeled in SUMO networks (see docs for some options how to do that) but isn't taken into account yet (except for one special car-following model). So visually you can have gradients but they don't have an effect on speed. 

 

Regarding the collisions: Did you set --pedestrian.striping.stripe-width to a smaller value than the pedestrian width?

 

Best regards,

Mirko

 

 

 

 

-----Original-Nachricht-----

Betreff: [sumo-user] Subject: Questions Regarding Pedestrian Simulation in SUMO

Datum: 2024-12-10T12:09:09+0100

Von: "민유성 via sumo-user" <sumo-user@xxxxxxxxxxx>

An: "sumo-user@xxxxxxxxxxx" <sumo-user@xxxxxxxxxxx>

 

 

 

Dear SUMO team,
 

Hello, my name is Min and I am a master's student from South Korea studying pedestrian simulation using SUMO.

While conducting simulations through SUMO, I have encountered a few technical issues that I have been unable to resolve on my own. I would be sincerely grateful if you could provide guidance or clarification on the following points.

1. Bidirectional Movement Issue

I aim to simulate pedestrians moving in both directions on a single link, where they may experience delays or avoid each other as they move. However, due to my technical limitations, I have been unable to implement this behavior. I would greatly appreciate it if you could share possible methods to achieve this. If this is not possible in SUMO, I would be grateful if you could confirm that as well.

 

2. Incline/Gradient Issue

In real-world scenarios, pedestrians' walking speed tends to decrease on uphill paths and increase on downhill paths. However, it seems that SUMO does not have a built-in feature to specify the gradient or incline of a link. Could you please let me know if there is a way to implement or approximate this effect within SUMO?

3. Overtaking Issue

I would like to simulate a situation where a pedestrian overtakes another when the one behind walks faster than the one ahead. However, when the lane count is set to 1, overtaking does not seem to occur. Is it possible to allow overtaking on a single-lane pedestrian path in SUMO? If so, I would appreciate guidance on how to implement it.

4. Teleportation Issue

Currently, during my simulations, I have observed that pedestrians sometimes "teleport" due to collisions. I would like to know how to prevent or resolve this issue. If you could provide any suggestions or possible solutions, I would be grateful.

  For context, I create the network and TAZ using Netedit, generate the corresponding XML files, and execute the simulation using SUMO-gui. This is my preferred workflow for conducting pedestrian simulations.

  If you could provide guidance on any of these issues, I would be extremely grateful. Please let me know if any clarification is needed regarding my questions.

Thank you very much for your time and assistance. I look forward to your response.

Best regards,

Min
Master's Student,  Hanyang university
Email:  henryandy@xxxxxxxxxxxxx

 
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