Test results for it: Inner Roundabout Test.png Test results for bypass version: Inner Roundabout Bypass Test.png Would love for these intersections to be added to the main post. Make sure to include safe exit blocks. All of the intersections have been scored with safe exit blocks, so your results a...

Can you back that up with any test data? How much throughput does it cost to have chain signals before the splits? I've tested it before but didn't keep the data. I finally had some free time today so I tested the wide you showed in your earlier post as it comes normally and with the entry rail sig...

If instead the intersection starts with a chain signal the train will come to rest before the intersection and over time an alternative path can become cheaper and then it switches and takes that path and can leave the intersection. In my base long ago, I watched trains sit at chain signals for min...

Thanks a lot for your thorough analysis and suggestions! Your intersection was well made and deserved a thorough analysis. Comparing the two designs, I see you're using signals generally every 3 car lengths instead, which might explain a lot of the difference. Is there a less-is-more rule hidden he...

When a train arrives at the intersection it will have a path already picked to cross it and it will go past the first signal. At that point the path is locked in, there is no way the train can repath when there is congestion to drive around a blockage. Like I previously said, when a train's braking...

I think the earlier a chain signal is in a series is the better. The game will reserve a stretch of chain signals in it's entirety so for reserving it doesn't matter where the middle chain signals are. But when the train crosses it frees segments as it leaves them. So the earlier the chain signal t...

Is there any obvious issue with this design? Any easy improvements? First of all, well done. Your adaptation is well thought out. I haven't been playing too much Factorio lately and your intersection tickled my fancy, so I rebuilt it from scratch to see if I would do anything differently within the...

Yodo wrote: ↑

Thu Jan 04, 2024 7:12 pm

I tested Delta again ... and got a score of 45.8±0.5 which is within the measurement uncertainty.

When I tested Delta back in the day, I got scores in the 45-46 tpm range. I brought this up to Hans, but differed to Hans' testing. I forget what he said. Perhaps he optimized something.

datarza wrote: ↑

Tue Dec 05, 2023 3:04 am

What is the purpose of your pickiness?

Throughput.

Sorry, can not understand the problem, please explain. I can confirm, that turning to the right (from top) blocks the train, which turns to left (from bottom), it is expected behaviour for unbuferred intersections (and for buffered probably as well). Why not just use the Wide instead? The only adva...

This situation is imposible, train can not move to top from bottom-right line as well as can not move to bottom from top-left line. Probably you mean the mirror situation, but here there is not differences in comparing to SQUAREABOUT (it is not an issue for this intersection): Yes, I put the arrows...

datarza wrote: ↑

Mon Dec 04, 2023 12:40 am

Also, left turns do not block intersection:

They block each other:

There are no reason to design any intersections again, just these simple ramps and mergers. There are non-ramp intersections possible that are more compact. Ramp tech comes later, so there will still be a place for non-ramp intersections. Even though there are fewer possibilities because of ramps, ...

Doing some handwavy math, does this mean that 2 lane intersections will always be limited to a score of ~100 with regular merges, and ~130 with high-speed merges? In practice, regular merges can get slightly higher because trains will not always come to a stop. The high score of 33-34 tpm is genera...

Hello! 1. Is there some intro writeup to intersection design? I see a bunch of patterns repeated in multiple of the intersections here, some of which make sense in retrospect but some of them are a mystery to me. I have not seen any advanced intersection writeup. Most tutorials go over the signals. ...

Also, as we need some more cursed intersections... We absolutely need more cursed intersections lol. I love it! Unfortunately, when I went to test it with the new mod, I got variable results (set 3 incorrectly testing). So I tried to test with the 5.3.3 bench as well and got good scores with RHT bu...

could some one tell me if this is a decent intersection I would suggest posting your BP to the Factorio discord server. There is a channel named "train-help" were you could get exhaustive help from many people. The closest intersection to yours appears to be the Buffered Compact Attempt ....

So. Today's FFF (#377) on rail changes. (Insert George Takei "Oh my!" here. I can neither confirm nor deny the reports of uncontrolled giggling.) Seriously though, holy crap that's going to make things interesting for intersection design. I'm quite excited for the new curves. They both lo...

I believe that you would need to modify the circuits to reduce the tpm on the X->W trains, although they would even out anyhow as the outbound west line would only be able to take maximum trains. I don't believe that there's a built in way to do this with the test bench and I don't have time to mess...

nOObe wrote: ↑

Wed Feb 01, 2023 7:27 pm

The mod Automatic Train Deployment (0.1.11) caused a non-recoverable error.
Please report this error to the mod author.

Kano may see it here, however you should probably post mod problems to the mod page to make sure:
https://mods.factorio.com/mod/Automatic ... nt_Updated