Train Crossing

[tatsuu]

I'm losing my mind here.

what am I doing wrong I've spent more time than I care to admit trying to fix this. I never have managed I always end up sending the trains through manually. I launched my first rocket and then started automating rockets and still the solution to this crossing eludes me. I've watched tons of youtube guides noone seems to give the solution.

signal in crossing signals out doesn't work in this use case.

Screenshot from 2023-01-09 01-44-42.png (4.77 MiB) Viewed 1749 times

[tatsuu]

I just put a single rail signal in and out and that seems to do the trick :

Screenshot from 2023-01-09 01-56-23.png (4.33 MiB) Viewed 1748 times

[FuryoftheStars]

I'm far from being an expert on train crossings, but this is what I would've done.

Train Crossing.jpg (1.49 MiB) Viewed 1740 times

[Loewchen]

I'm far from being an expert on train crossings, but this is what I would've done.

The two existing chains should be normal signals and the "X" should be the chain signal.

[tatsuu]

The two existing chains should be normal signals and the "X" should be the chain signal.

nice!

[FuryoftheStars]

I'm far from being an expert on train crossings, but this is what I would've done.

The two existing chains should be normal signals and the "X" should be the chain signal.

Yeah, you could do that. I was just going for something with minimal changes and didn't see the need to allow one train ahead of the other into the first intersection considering the short distance saved. *shrug*

[SoShootMe]

I'm far from being an expert on train crossings, but this is what I would've done.

The two existing chains should be normal signals and the "X" should be the chain signal.

In the particular situation here that would be fine, but FuryoftheStars' suggestion follows the simple, general rule that there should always be a train's length from a normal signal to the next signal (of either type). That is, assuming the block north of the crossing is long enough.

[Loewchen]

In the particular situation here that would be fine, but FuryoftheStars' suggestion follows the simple, general rule that there should always be a train's length from a normal signal to the next signal (of either type). That is, assuming the block north of the crossing is long enough.

If that is a general rule, it needs to die (:
It would reduce throughput unnecessarily in all cases but one. The one case being the first Block after a chain-signal, where you need the train to fit into completely so its rear cannot block the Block your chain-signal tries to keep free.

The "general" rule for junction free track should be, to keep the Block size (distance from normal signal to next signal) a fraction of the train length (1/2, 1/3, ...), so that a train can move as close to the one in front of it as possible. For most players this degree of optimization is not necessary though.

[SoShootMe]

In the particular situation here that would be fine, but FuryoftheStars' suggestion follows the simple, general rule that there should always be a train's length from a normal signal to the next signal (of either type). That is, assuming the block north of the crossing is long enough.

If that is a general rule, it needs to die (:
It would reduce throughput unnecessarily in all cases but one.

I agree it needs to die, but only because I meant to write "at least a train's length"! Also, I'm not sure if you interpreted "general" as something like "always applicable", but to me a "general rule" is explicitly not that.

Put another way: it's essential at the exit of a junction (as you described) and in practice a useful "rule of thumb" lower block size limit in other cases, where smaller blocks don't affect "correctness" and would allow higher throughput but are usually just unnecessary signals.

[FuryoftheStars]

Well, regardless of the rule, the reason I recommended it the way I did was because when I quick did a mock-up intersection like the OP's, placing signals somewhat like how Loewchen recommended, I saw the blocks as being too small to make a meaningful difference. As such, it felt like it was easier to get across this way vs anything else.