Factorio Forums

Posted: **Tue Aug 26, 2025 7:28 am**

Hello. I have an issue that's kind of a feature request. I have a X-intersection blueprint for my trains. The problem occurs when I let bots build the blueprint for me- the circled signals have a chance to flip to a different train track, depending on which one was build first by the bots

Here is the blueprint string, try a couple times and see:

Code: Select all

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

I don't know much, but this could be fixed by adding a checkbox in the blueprint that forces signals to be a certain way, regardless of what rails are there at the time.

Posted: **Tue Aug 26, 2025 11:38 pm**

Your blueprint is not symmetric and you marked the wrong signals. I have marked with arrows the two misplaced signals on your screenshot. In my testing the blueprint is built as designed every time.

Posted: **Tue Aug 26, 2025 11:42 pm**

Post a vanilla save that lets you reproduce the issue please and describe exactly how to do so.

Posted: **Wed Aug 27, 2025 4:07 pm**

atomizer wrote: Tue Aug 26, 2025 11:38 pm Your blueprint is not symmetric and you marked the wrong signals. I have marked with arrows the two misplaced signals on your screenshot. In my testing the blueprint is built as designed every time.

I stared at this thing for too long ...
Sorry for wasting your time, you are absolutely correct. Thank you for your help! I should have known better than to think there is a bug in Factorio

Factorio Forums

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[2.0.60] Rail signal ghosts placed incorrectly by bots

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Re: [2.0.60] Rail signal ghosts placed incorrectly by bots

Re: [2.0.60] Rail signal ghosts placed incorrectly by bots