[Q&A] Discrepancy Between PT Modal Share in "modestats" and missing PT Legs in the "trips" File in the Output Folder

[ArezHK]

Provide the MATSim version you are using. You can find the version in the pom.xml. E.g. 2025.0.

15.0

Did you build a minimal example to reproduce the issue?

• Yes!

Describe the problem you are facing.

Hello,

I have encountered a strange case and would appreciate your help.

I am running a multimodal simulation consisting of several modes: car, pt, pedelec and bike. After finishing the simulation, I checked the "modestats" data in the output folder and noticed that pt has a share of 3%. However, when I look at the "trips" file in the output folder, I cannot find any pt legs.

Interestingly, when I review the log file up to the last iterations (even after turning off innovative strategies), pt legs were present. But in the very last few iterations, no pt legs are reported. Despite this, the final "modestats" output still shows a 3% pt share.

What could be the possible reasons for this discrepancy?

Thank you in advance for your support.

If possible, provide a link to your minimal example. This might be a GitHub repository.

No response

If you want, provide some background information about you and your project. This might help us understand your issue better.

No response

[Janekdererste]

Could you provide your run class as well as your output files of that run? Just from the description, I cannot really say what the error could be.