3 and 4 way intersections

Smart setups of railway stations, intelligent routing, solutions to complex train-routing problems.
Please provide - only if it makes sense of course - a blueprint of your creation.
Post Reply
Copy link
mrvn
Smart Inserter
Smart Inserter
Posts: 5836
Joined: Mon Sep 05, 2016 9:10 am
Contact:
Contact mrvn

Re: 3 and 4 way intersections

Post by mrvn »

Kano96 wrote: ↑Sat Nov 27, 2021 8:54 pm Another related issue is also the question of rail signal placement. You can place signals in multiple different ways, like purely performance optimized or allowing trains to repath while waiting or like they would be in an actual rail set. All of these make some sense from a gameplay perspective but deliver different test results. Until now, we just let the author decide how to signal them for the most part, but we'll probably have to enforce one of the methods to keep test results comparable.
Could we add the rule that all images and blueprints must be attached instead of 3rd party services please.
Top
FuryoftheStars
Smart Inserter
Smart Inserter
Posts: 2768
Joined: Tue Apr 25, 2017 2:01 pm
Contact:
Contact FuryoftheStars

Re: 3 and 4 way intersections

Post by FuryoftheStars »

mrvn wrote: ↑Sun Nov 28, 2021 2:38 am
Kano96 wrote: ↑Sat Nov 27, 2021 8:54 pm Another related issue is also the question of rail signal placement. You can place signals in multiple different ways, like purely performance optimized or allowing trains to repath while waiting or like they would be in an actual rail set. All of these make some sense from a gameplay perspective but deliver different test results. Until now, we just let the author decide how to signal them for the most part, but we'll probably have to enforce one of the methods to keep test results comparable.
Could we add the rule that all images and blueprints must be attached instead of 3rd party services please.
I don't care so much about attached vs 3rd party, but I would like to see images with all blueprints. Can't exactly see someone's intersection from just a blueprint when I'm not in a position to fire up the game....
My Mods: Classic Factorio Basic Oil Processing | Sulfur Production from Oils | Wood to Oil Processing | Infinite Resources - Normal Yield | Tree Saplings (Redux) | Alien Biomes Tweaked | Restrictions on Artificial Tiles | New Gear Girl & HR Graphics
Top
mrvn
Smart Inserter
Smart Inserter
Posts: 5836
Joined: Mon Sep 05, 2016 9:10 am
Contact:
Contact mrvn

Re: 3 and 4 way intersections

Post by mrvn »

FuryoftheStars wrote: ↑Sun Nov 28, 2021 6:35 am
mrvn wrote: ↑Sun Nov 28, 2021 2:38 am
Kano96 wrote: ↑Sat Nov 27, 2021 8:54 pm Another related issue is also the question of rail signal placement. You can place signals in multiple different ways, like purely performance optimized or allowing trains to repath while waiting or like they would be in an actual rail set. All of these make some sense from a gameplay perspective but deliver different test results. Until now, we just let the author decide how to signal them for the most part, but we'll probably have to enforce one of the methods to keep test results comparable.
Could we add the rule that all images and blueprints must be attached instead of 3rd party services please.
I don't care so much about attached vs 3rd party, but I would like to see images with all blueprints. Can't exactly see someone's intersection from just a blueprint when I'm not in a position to fire up the game....
+1
Top
User avatar
hansjoachim
Filter Inserter
Filter Inserter
Posts: 252
Joined: Wed Apr 26, 2017 7:03 pm
Contact:
Contact hansjoachim

Re: 3 and 4 way intersections

Post by hansjoachim »

mrvn wrote: ↑Sun Nov 28, 2021 2:38 am
Could we add the rule that all images and blueprints must be attached instead of 3rd party services please.
There is a post character limit so we wouldn't have enough space for all intersections. We have backups so it's fine. If you mean replies i don't see the problem with factoriobin also i don't like setting rules that can't be enforced.
FuryoftheStars wrote: ↑Sun Nov 28, 2021 6:35 am
I don't care so much about attached vs 3rd party, but I would like to see images with all blueprints. Can't exactly see someone's intersection from just a blueprint when I'm not in a position to fire up the game....
Yeah, that would be nice, but won't make it a requirement.
Top
User avatar
hansjoachim
Filter Inserter
Filter Inserter
Posts: 252
Joined: Wed Apr 26, 2017 7:03 pm
Contact:
Contact hansjoachim

Re: 3 and 4 way intersections

Post by hansjoachim »

mmmPI wrote: ↑Sat Nov 27, 2021 9:47 pm
There is this other junction that was made after Koub made a thread about rail spacing. The goal was to make a 32x32 junction for it to be chunk-aligned. This is not my creation but it was the result that was choosen.(i think it was from hansjoachim)The rail spacing is 6 tile too, there was unsuccessful attempt to make it smaller by me. :). I didn't found it in the googledoc, it look like the "compact spiral" in the 2 lane unbuffered junctions from the csv/previous thread but with improved signaling it should score much better.
Yeah, i have been thinking about that intersection. Adding it:)
Top
SaiMoen
Burner Inserter
Burner Inserter
Posts: 10
Joined: Sat Nov 09, 2019 3:51 pm
Contact:
Contact SaiMoen

Re: 3 and 4 way intersections

Post by SaiMoen »

I also had this one, managed to get 1:50, 2:39, 3:48, s:46 with optimal exit blocks.

Top
User avatar
hansjoachim
Filter Inserter
Filter Inserter
Posts: 252
Joined: Wed Apr 26, 2017 7:03 pm
Contact:
Contact hansjoachim

Re: 3 and 4 way intersections

Post by hansjoachim »

SaiMoen wrote: ↑Fri Dec 03, 2021 6:15 pm I also had this one, managed to get 1:50, 2:39, 3:48, s:46 with optimal exit blocks.

Thanks:)
That is the same one as already on the list. Crushed wide improved just RHD. I added it as an RHD version. The results are within margin of error.
Top
ahopefulhobbit
Manual Inserter
Manual Inserter
Posts: 1
Joined: Thu Dec 09, 2021 4:27 pm
Contact:
Contact ahopefulhobbit

Re: 3 and 4 way intersections

Post by ahopefulhobbit »

Thanks to everyone who's added LHD blueprints! I vastly prefer LHD, but the old post didn't have many blueprints oriented that way
Top
SaiMoen
Burner Inserter
Burner Inserter
Posts: 10
Joined: Sat Nov 09, 2019 3:51 pm
Contact:
Contact SaiMoen

Re: 3 and 4 way intersections

Post by SaiMoen »

Finally managed to match the score of the number 1 on the 2-lane 4-way unbuffered section :D
It took some tweaking, I tried to force it to be spaced by 2 tiles, but I could only make it work with spacing 4 (on RHD at least). I call it Snowball
1:50, 2:39, 3:51, s:47
Probably got lucky though, I feel like something is not quite right with a default parameter because I've seen an error of ± 2 tpm which seems a bit ridiculous.
Snowball.png
Snowball.png (669.64 KiB) Viewed 8060 times
Top
dinglebarry
Manual Inserter
Manual Inserter
Posts: 2
Joined: Sat Dec 18, 2021 12:04 am
Contact:
Contact dinglebarry

Re: 3 and 4 way intersections

Post by dinglebarry »

Compact Celtic Knot with Narrow Tracks
Score: 46

Blueprint: LHD RHD Size: 38 x 38 Spacing: 2 tiles
LHD: Set 1: 50, Set 2: 38, Set 3: 49, Score: 46, RHD: Set 1: 50, Set 2: 39, Set 3: 49, Score: 46,
Author: dinglebarry
LHD pic.jpg
LHD pic.jpg (208.49 KiB) Viewed 7953 times
Inspiration taken from gyro2death's Super Compact Celtic Knot (#3 in 4-way unbuffered). I like the look and performance of the Celtic Knot intersection, but I also like having narrow tracks. So I started by using gyro2death's design, but narrowed the tracks and adjusted their positions to make space for signals. Then got rid of the unnecessary signals reducing the number from 36 to 24. It scores the same overall as gyro2death's intersection but mine performs slightly better on Set 1, while his performs slightly better on Set 3. Mine also has the advantage of being able to work just as well with RHD, while with his, he would need to have slightly less optimal signaling for RHD.
Last edited by dinglebarry on Sun Dec 19, 2021 1:49 am, edited 12 times in total.
Top
User avatar
hansjoachim
Filter Inserter
Filter Inserter
Posts: 252
Joined: Wed Apr 26, 2017 7:03 pm
Contact:
Contact hansjoachim

Re: 3 and 4 way intersections

Post by hansjoachim »

dinglebarry wrote: ↑Sat Dec 18, 2021 12:33 am Compact Celtic Knot with Narrow Tracks
Score: 55

Blueprint: LHD RHD Size: 38 x 38 Spacing: 2 tiles
LHD: Set 1: 56, Set 2: 42, Set 3: 66, Score: 55, RHD: Set 1: 56, Set 2: 42, Set 3: 66, Score: 55
Author: dinglebarry
LHD pic.jpg

Inspiration taken from gyro2death's Super Compact Celtic Knot (#3 in 4-way unbuffered). I wanted to make a celtic knot intersection that would work with a narrower spacing between the tracks. So I started by using gyro2death's design, but narrowed the tracks and adjusted their positions to make space for signals. Then got rid of the unnecessary signals reducing the number from 36 to 24 and replaced some chain signals with normal signals to speed up the intersection. To my surprise it ended up having a significantly higher throughput than the original design in all sets. To be fair, it felt like I was cheating in Set 3 since it was constantly prioritizing the trains moving vertically and it never switched to allow the trains moving horizontally to get through.
Thanks for the submission:) looks like a good improvement but it seems you didn't test with safe outputs and that is why your results are so high.
Top
User avatar
Hovedgade
Burner Inserter
Burner Inserter
Posts: 16
Joined: Mon Jan 25, 2021 7:32 pm
Contact:
Contact Hovedgade

Re: 3 and 4 way intersections

Post by Hovedgade »

I'm back once again with a new roundabout. :D
This one is smaller than hansjoachim's Parallel split medium but has the same score and the same spacing. Without the circuitry the throughput of the intersection will fall drasticly. I tested it with unsafe outputs/exits because this intersections has those bufferzones included. I garentee that this intersection will not deadlock.
Flower roundabout
Score: 100

Size: 230x230, Spacing: 6 tiles, Train Length: 6
RHD: Set1: 103, Set2: 103, Set3: 95
Author: Hovedgade
Image
Edit: By accident i wrote the wrong dimensions last time. It should be fixed now
Last edited by Hovedgade on Sun Dec 26, 2021 11:35 am, edited 1 time in total.
Top
dinglebarry
Manual Inserter
Manual Inserter
Posts: 2
Joined: Sat Dec 18, 2021 12:04 am
Contact:
Contact dinglebarry

Re: 3 and 4 way intersections

Post by dinglebarry »

hansjoachim wrote: ↑Sat Dec 18, 2021 5:41 am
dinglebarry wrote: ↑Sat Dec 18, 2021 12:33 am Compact Celtic Knot with Narrow Tracks
Score: 55

Blueprint: LHD RHD Size: 38 x 38 Spacing: 2 tiles
LHD: Set 1: 56, Set 2: 42, Set 3: 66, Score: 55, RHD: Set 1: 56, Set 2: 42, Set 3: 66, Score: 55
Author: dinglebarry
LHD pic.jpg

Inspiration taken from gyro2death's Super Compact Celtic Knot (#3 in 4-way unbuffered). I wanted to make a celtic knot intersection that would work with a narrower spacing between the tracks. So I started by using gyro2death's design, but narrowed the tracks and adjusted their positions to make space for signals. Then got rid of the unnecessary signals reducing the number from 36 to 24 and replaced some chain signals with normal signals to speed up the intersection. To my surprise it ended up having a significantly higher throughput than the original design in all sets. To be fair, it felt like I was cheating in Set 3 since it was constantly prioritizing the trains moving vertically and it never switched to allow the trains moving horizontally to get through.
Thanks for the submission:) looks like a good improvement but it seems you didn't test with safe outputs and that is why your results are so high.
Oh, I honestly don't know what safe outputs means, but I am guessing that it means I would need to have enough space in the exit block to fit an entire train. I can try to do that and retest it.

EDIT: Nevermind. I went back to the original post in the forum and figured out what you were talking about. I don't know how I missed that the first time. Thanks for the help though. I really couldn't understand why my score was significantly higher than the other intersections in that category. I edited the first post so now it has the correct scores.
Top
User avatar
hansjoachim
Filter Inserter
Filter Inserter
Posts: 252
Joined: Wed Apr 26, 2017 7:03 pm
Contact:
Contact hansjoachim

Re: 3 and 4 way intersections

Post by hansjoachim »

Happy holidays:)
I will go over the submitted intersections eventually, it's just holidays:)
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Cross Parallel Buffer

Post by Avona »

I made a parallel buffered version of the cross intersection!
Cross Parallel Buffer
Score 82

RHD
Set 1: 100, 97
Set 2: 80, 81
Set 3: 68, 68

LHD
Set 1: 99
Set 2: 79
Set 3: 68

6 car trains, 174x174, 2 lane, 6 tile spacing



Image
Last edited by Avona on Fri Dec 31, 2021 1:12 am, edited 1 time in total.
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Starfish

Post by Avona »

Starfish v1.2
Edits were made so that set 3 now alternates properly. Signals were reduced for ups concerns.

Score 94

RHD
S1: 104
S2: 91
S3: 87

LHD
S1: 103
S2: 92
S3: 89

6 car trains, 150x150, 2 lane, 6 tile spacing



Image
Last edited by Avona on Sun Jan 16, 2022 7:10 am, edited 5 times in total.
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Hurricane Intersection

Post by Avona »

After more adjustments, I present Hurricane 1.1.

6 car trains, 150x150, 2 lane, 6 tile spacing

Score 108

RHD
S1: 107, 107, 108
S2: 106, 106, 106
S3: 111, 111, 111

LHD
S1: 109
S2: 105
S3: 110



Image
Last edited by Avona on Thu Dec 30, 2021 6:56 pm, edited 1 time in total.
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Chubby Bunny

Post by Avona »

I found that during set 2, only one set of lanes would be utilized, reducing overall throughput. There isn't enough space to modify track lengths so I put a circuit network connection on the signals that only allows trains from a direction to go if they have the same or more buffered trains than the compared lane. I'd rather not use circuits but, after hours of testing today, it seems that these circumstances might actually happen in an operating factory, so I went with the circuit conditions.

I've included the circuited versions and uncircuited versions now.

Chubby Bunny Circuited
Score 77

RHD
S1: 81
S2: 72

LHD
S1: 80
S2: 73

Uncircuited
Score 57

RHD
S1: 79
S2: 34

LHD
S1: 80
S2: 34

6 car trains, 150x100, 2 lane, 6 tile spacing



Image
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Echo 1.1

Post by Avona »

Echo is another intersection based on the cross parallel buffer which is a bit squashed but retains its mirror symmetry.
Edit: I modified Echo so that set 3 now synchronizes. The stat line is now significantly better than the cross parallel buffer.
I've also just added the Echo 1.1 3 Way! It converts to the echo easily! (I was unable to synchronize the 3 Way LHD. I will keep trying.)

Echo 1.1 4 Way 150x150

RHD
Score 89
S1: 101
S2: 80
S3: 86

LHD
Score 90
S1: 102
S2: 83
S3: 85

Echo 1.1 3 Way 150x112

RHD
Score 62
S1: 78
S2: 46

LHD
Score 56
S1: 78
S2: 34

6 car trains, 2 lane, 6 tile spacing



Image

Image
Last edited by Avona on Fri Jan 07, 2022 10:48 pm, edited 5 times in total.
Top
Avona
Long Handed Inserter
Long Handed Inserter
Posts: 65
Joined: Sun Dec 26, 2021 8:50 am
Contact:
Contact Avona

Baby Starfish

Post by Avona »

This is based on the starfish but not parallel buffered. I was going for minimum width while keeping buffers.

Baby Starfish 1.1 (Now with less signals!)

RHD
Score 59
S1: 76
S2: 51
S3: 50

LHD
Score 59
S1: 75
S2: 51
S3: 50

6 car trains, 90x90, 2 lane, 6 tile spacing



Image
Last edited by Avona on Tue Jan 18, 2022 1:28 am, edited 1 time in total.
Top
Post Reply

Return to “Railway Setups”