R22-30 true 4way interchange
by l3iuvp
3 months ago
37
True 4way - maximum throughput, minimum slowdown or waiting.
- Every lane has a non-intersecting option to go right / straight / left
- Improved design with no cross-overs
- Minimal merge lengths (remove any no-stop demarcation)
- Mostly R30, a few R22 corners to reduce size
- 2 cell median, matching bridge layout (+alternative blueprint with 1 cell median)
The footprint is large but you can build in the center and corners.
Posting as I did not see anyone else share a design like this and it unclogged / doubled my train traffic capacity.
| Version | Released | Downloads | Copy |
|---|---|---|---|
| 1 Current | 3 months ago | 37 |
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Paste it into the game: Blueprints → Import from string. The game fetches the blueprint itself, so the link is all you need.
On an older game build that doesn't take links? Copy the blueprint string instead:
I don't see any way to reverse the direction the train is coming from. It seems to me that this intersection should have no more functionality and traffic capacity than this full R30: https://hub.coigame.com/Blueprint/Detail/1398 It looks pretty good, so I'm going to test it anyway.
@Malibu2, I found having a u-turn (IE; roundabout) added congestion with the extra merge wait points, and also slowed down the path-finding. An intersection is the chokepoint for rail traffic so best to minimize merges and lane changes. You can add a u-turn overpass just outside the intersection if needed, with waiting space for the trains to wait for merging with oncoming at-speed traffic. This design is different from #1398 if you look at the inside lanes - every lane has the independent option to go right, straight, or left.