well done

good

good nice

I absolutely love, where present, the descriptions of these (sometimes) fantastic intersections. You're take the first few pages of intersections when sorted by all-time popularity, and it's deserved. These are saving me a butt load of effort doing something that you did better.

I can't unsee the tree swastika..

Shameless Plug: If you want one without the disadvantages, here's one with normal highway spacing and about the size of the built-in cloverleaf, while still having long ramps, great symmetry, and smooth slopes: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2004965929

@pacifist & @Timboh : I live in the OKC area and one of these full diamonds exist: !40 & !44 interchange on the west side of the city. They are traffic collision central, but for their purposes, they do alright. I also get into the middle lane. As Oklahoma passed a law that allows Highway Patrol and city cops to ticket a person staying in the far left lanes (citing that emergency vehicles need these lanes free to get to accidents), this is much more common and as a result, traffic accidents are on the down swing for this interchange. :) There are a number of left lane exits/entrances in my city on the highway system, so we are a bit more aware of them.

@pacifist: Late reply, but I believe you were trying to reply to me? If so, then here's my reasoning:

Personally, while driving down a highway in the U.S. with 3 or more lanes, I prefer to treat the middle lane(s) as the fast lane(s) instead of the leftmost lane, merely because I had presumed that entrances and exits from the left lane (in addition to the right lane) would exist, and because of that, I'd want to stay in the middle lane, so that I could give merging vehicles from either side of the highway some extra breathing room to merge into the highway. I never knew that there was such widespread assumptions among so many other drivers that the left lane is always considered the fast lane, regardless of how wide the road is. (Of course, on 2-lane highways in the U.S., I'd typically treat the left lane as the fast lane, since I'd anticipate left-lane exits to be rare and impractical on such narrow highways.)

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In case you're curious:

The Zoo interchange. (This one is being replaced with a stack):
https://www.google.com/maps/@43.0268666,-88.0353103,1210m/data=!3m1!1e3

Stadium Interchange:
https://www.google.com/maps/@43.0324904,-87.9708342,1029m/data=!3m1!1e3

The stadium interchange doesn't even need to be free-flowing for the north-south road as it has traffic lights in both directions... It should probably be replaced with a parclo A4, SPUI, or diverging diamond. The fact that it's a "full diamond" makes no sense.

Badger Interchange:
https://www.google.com/maps/@43.1025898,-89.2867859,2548m/data=!3m1!1e3

This one is going to become a problem as traffic goes up.. People from out of state slow down when entering from the left.

These are the main offenders I'm aware of.

@pacifist: No need to say sorry. It was me who didn't realize you were responding to the comment below, so the confusion was kind of my fault. Anyway, it's good to hear the US is working on removing these abominations, which ruin an otherwise impressive expressway system. Though, it's a pity they're doing it at such a slow rate. I suppose there simply ain't enough funding to rebuild so many interchanges. Anyway, I hope that interchange of yours gets sorted out once reconstruction has finished. Cheers! :D

@Timboh: Sorry for the confusion. I didn't intend to insult your work. I was referring to the comment made below mine who said he was a big fan of this type of interchange. I go through one of these every day and it's generally referred to as "the war zone" by the locals. In 2017, the DOT should be finished retrofitting it into a 4-level stack. We're spending 1B dollars on it's construction and there's a lot of opposition (many people here just want to keep the left exits and simply add through lanes, but that's too dangerous!

I frequently see idiots getting into the entrance lane to pass... and a pile of debris where the entrance lane merges with the through lanes.

@pacifist: Did I say that? I did mention that I liked the aestetics of full diamonds, and that they fuction quite well in-game since there is no safety aspect to consider in-game, but in real life... Yeah, it's not really some sort of revelation that inner exits are horrible in every aspect. They're really rare here in Sweden, but I've heard my fair share of horror stories about American and Belgian ones to understand how they can ruin capacity, and most importantly, ruin traffic safety.

How could you be a fan of full diamond interchanges... There's still 2 of them in my state, and they're responsible for thousands of deaths. The left exits are a nuisance. Trucks either sit in the left lane for miles, or get in the left lane at the last minute.

The real issue though... Left entrances are extremely dangerous!

It's a good asset for historical reasons, but to be a fan of these death interchanges is a bit insane.

No offense, but while I'm personally a fan of full diamond interchanges, I've already designed ones that are even more compact than this. (They're even smaller than the default cloverleaf interchanges that the game provides you with.) My secret: having one pair of straightways (such as north/south) weave over the other pair (such as east/west), as opposed to you having each straightway fly under and over at least one other straightway. I also have half of my merge points suspended.

Can you not replace the ugly grey default icons with an image of the intersection? Currently I haven't bothered using any of the interchanges because I can't be bothered to click every single identical intersection icon to choose one to use.

I think it shouldn't be too difficult to make a more compact, though less symmetric, version of this junction, by removing the level changes in the centre so it's just a regular crossing. Thereby you could bring the parallel highways closer together and bring the ramps much closer to the centre. I would like to see your take on that.

good

Nice.

I like the symmetry in this one, although I'm generally not fond of intersections that require diverging the highway in advance of it. It makes it hard to align the intersection properly. And it seems to me that the left turn ramps take up more space than necessary, but the curve on the right turns to reduce the footprint is great.

Huh. I came up with this similar design and didn’t know what it would be called in real‐life. In searching for more information about “full diamond” interchanges, I discovered that mine is a gothic cross. They’re rare, but they do exist. So thanks for that.

@Tapper: Thank you! I'm glad you like them! :D

Doesn't bother me at all :) I love the design of your interchanges.

@Tapper: Trust me, this is not the first time people find "references" to a certain german political group from the 1940's in my stuff. I can remove it if it bothers you that much, but I personally don't see it. I see an outlined plus-symbol ;)

Please tell me the tree pattern was by accident. I can't not see it.

@Pale-Blue-Dot @spudcosmic: Wow... just wow. I wish I could respond with an equally heart-warming comment, but I lack the right words. Pale-Blue-Dot, spudcosmic, everyone... You people are amazing! Thank you so much! :D

I agree with Spudcosmic, you certainly seem to know what you are talking about. Your junctions are brilliant. I've had a lot of fun interchanging them in my industrial complex to get the best results.

I actually found a use for the pentagon junction. I had an awkward gap in my city and I just just thought why the hell not and ploped down your pentagon on a slightly curved section of motorway. I then connected the remaining three motorway 'stems', if thats what you could call them, to a ring road. It formed a more interersting grid system inside the gaps and allowed me to use more of your 4-way junctions.

Thank You Timboah, the world of Cities: Skylines would have far uglier and clogged up junctions if it weren't for you!

Wow that thing is huge! It's even bigger then the colossal diverging windmill . It's absolutely enormous by the time the highways are brought back together. It has nice loooong ramps though.

I just wanted to thank you for making these and giving them amazingly informative descriptions. I've learned a lot about how highways work just by reading and looking at your collection of interchanges, thanks!