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8Way Roundabout 5.0
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Assets: Intersection
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906.042 KB
13 Mar, 2021 @ 11:43pm
1 Change Note ( view )
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This item requires all of the following DLC
Cities: Skylines - Mass Transit
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jrobertsimpson
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8Way Roundabout 5.0

Description
Requires Mass Transit DLC. All roads add and subtract lanes, thus utilizing 2 & 4 lane highways.

An 8-way interchange roundabout.
Each direction has 2 slip lanes to handle change to the next 2 right directions including a clover for the immediate left highway. A sunken roundabout handles the last 3. I have included guide photos for the lane selection tool. Other TM:PE things are usual roundabout necessities. I've also changed the on-ramp to the roundabout to be speed 80.

Suggested Mods:
-TM:PE
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1637663252
-Node Controller
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2085403475
-Intersection Marking Tool
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2140418403

-TM:PE is for the roundabout.
-Node Controller is to help the lane split junctions look better.
-Intersection Marking Tool is because the game should already come with this anyway and it truly finishes the interchange and your entire city perfectly with such small detail.

Does this interchange actually make sense with real-world logic? No.
Would there ever be a chance that this makes sense to build in the center of a city? Absolutely not.
Is it perfect for aesthetic builders and for a game that can be based on fantasy and isn't 1:1 scale? You bet your britches!

I personally love to over-engineer everything in my cites, so let me know how this works for you, and I'd love to see pictures.

Dirt roads were left behind from the framework that allows such symmetry. This is intended for those that would like to add rail of multiple kinds in between the highways.

Hopefully, the intersection markings and the node values stay with the interchange. If not, I used 20 on the highways, and 15 on the roundabout.
3 Comments
< >
RichAntDav 21 Mar, 2021 @ 12:12pm 
Also, I took a screenshot of where the interchange begins to fail, you should be able to see it in the Artwork section of my profile. b:steamhappy:
RichAntDav 21 Mar, 2021 @ 12:02pm 
Hey dude,
I've had a chance to run this interchange through my 8-way torture test now. It was performing well, but there is a kinda fatal flaw. It's the lane exiting the roundabout, it has to mix with the "first-right-shortcut" before it gets to the highway, when these two lanes mix it can start to cause a backlog of traffic. I'm not using priority signs, so this soon backs up onto the roundabout, pretty soon the whole roundabout comes to a halt. What it really needs is for the traffic exiting the roundabout has it's own dedicated path to an empty lane on the highway to guarantee that the roundabout remain clear.

A few other comments.
The inner cloverleaf style shortcuts are only used a little bit, but are probably just about worth it because it takes vehicles off the roundabout that would otherwise be on the roundabout for a long time.
The performance still was not terrible, it would come around the middle of the pack in my 8-way intersection face-off
RichAntDav 14 Mar, 2021 @ 5:51am 
Very impressive, and not just from a "looks awesome" perspective. The "short-cut" routes look like they are very well thought out and the way the traffic enters and exits the roundabout looks like it will avoid a lot of congestion problems. I've subscribed to it and will be running this through my 8-way intersection test when I get a chance and I'll report back here when I've had a chance to play with it in detail.