Hey ho,

I did the Factorio Tutorial again and i found the right lesson, which answered my question.
I'ved put a chain signal at the beginning of each intersection and a train signal at the end of the intersection.
The last 24 InGame hours i had no train crashes, so i think it's working.

The ...

... on 5 conditions:
The manual launch signal (which I just mentioned)
3 signals - one for each of the ammo types
1 signal that checks major fuel and ... oxidizer in the tank below a certain threshold. The minimum threshold prevents the tanks from filling up when at a planet. This is a known flaw ...

... decider combinator.

The ANY wildcard (the green one) was slightly changed if used as output. ANY as output picks one signal from the matching signals. In game version 1, if you use the ANY wildcard as condition as well as output, the ANY as output picked the same signal that was picked by ANY in ...

... DC) is as follow.

AC-1. Gets input signal from "Constant Combinator" (here Inserter) and adds 20Million to this value
AC-2. On Green, gets input signals from Roboport, & on Red, gets input from AC-1. For "EACH" signal, adds 0 to it and outputs it.
DC-3. For "ANYTHING" > 20Million, outputs the ...

... difficult it would be to make one.

Either a new combinator or extend an existing one, where you could set the mode to Max or Min. In the given signals, it would output the value corresponding to that setting. For example, if the combinator given a signal of 500 iron plates, 200 copper plates, and ...

+1 here. Also for promethium

You cannot successfully build a reliable railway system without a minimum amount of rail signal understanding. Did you try the Factorio wiki tutorial: https://wiki.factorio.com/Tutorial:Train_signals

As Loewchen said, use the tutorials and place signals without worrying about priority. Once you split each intersection (each of your pictures shows one "compound intersection" that should be signaled together) with chain signals, and place rail signals at each exit, train pathfinding will produce ...

Priority is not something that makes sense to enforce in a block signal system, try the ingame train tutorials first to get the basics.

Hello friends,

i have a huge problem with my train signals.
In the last days i watched some YouTube Videos, read many posts on Reddit (or in other discussions), i tried to do the Factorio Tutorial (which i didnt passed), but i dont ****** understand the train signals.
Maybe i am to stupid to ...

... chunk signal having priority and not reprocessing. You can avoid this feedback loop by isolating the output of the crusher from the belt content with another combinator, but this is really not necessary. In the given setup you can even add more reprocessing crushers without needing to isolate signals.

... some kind of chunk
- There's more iron than carbon chunks or other way around
- Is there enough chunks to allow to process

All of theses can emit signals and the sum of theses is made through the cable, then the selector choose the biggest value (it'll be the one to fulfil most conditions)

And the ...

I am all for adding more signals to the rocket silo to better control rocket launches. I was so surprised learn there was no signal for completed rockets, so I couldn't tally up how many rockets I have waiting in my base. There should definitely be a launch circuit signal though, with the rocket silo ...

... t match the description. The tooltip says:
“Searches for the specified signal in the inputs, and picks the highest-quality version of any found signals.”
A reasonable user would expect it to select the input of the given signal type with the highest quality among all available inputs ...

... 1 decider combinator and 1 additional constant combinator:
07-10-2025, 14-21-57.png
In the 1st constant combinator, you globally define all the signals you intend to handle. All with value 1, so a selector combinator will select by internal default order, which is well defined and stable.
07-10 ...

... factorio.com/129548)

Bugfixes

Fixed a crash when removing transport belts or walls with wires in blueprints.
Fixed that the show-train-signals debug option didn't render correctly for elevated signals. (https://forums.factorio.com/129804)
Fixed that changing a trains group would not ...

Thanks for the report. This is now fixed for the next release.

Thanks for the report however the current behavior is correct and I don’t believe we will be changing it.

I don't see any problem here. There are actually 2 steps for the assembler:
1. Set recipe according to the signal on the green wire
2. Read the ingredients of the current recipe and output to both wire.

For the combinator, there is only 1 step:
1. Add everything by 0 and output.

If you want to ...

The following picture shows the offset that is with the signal This is the expected visual for the signals The extra exposure that is on the pictures is due to capture software I'm using doesn't properly account for HDR color space.