# Is anyone here interested in Train Signals and how they work?

**URL:** https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759
**Category:** General
**Created:** [31 December 2019 01:46 UTC](https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759 "2019-12-31T01:46:51Z")
**Posts on this page:** 1
**Showing post:** 16

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### Author: ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [2 January 2020 05:17 UTC](https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759/16 "2020-01-02T05:17:31Z")

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ARGH!

(Stupid me - again)

At least I posted the sub-flow way back near the start.

Today I was getting curious on how to get it working better, and I stuffed up.

Ok, I'll get the sub-flow I posted and stick it back in.

News flash:  
All the links inside the subflow aren't there.

Anyone have an idea why that is?  
Unless I am missing something.

I'm kinda stuck now because I did such a good job of _fixing it until it broke_ I don't seem able to get the original sub-flow back.

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_[View the full topic](https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759)._