Forbidden Techniques that DESTROY Downtown traffic!

[@TheCoconutness]

I would love to see more cursed but efficient intersections. This is peak cities skylines content.

[@deephorizon1365]

I agree.

[@ayoub4180]

same

[@govcorpwatch]

the turns could leverage height deltas (bridges) to avoid crossing. Only half the height would go down into the ground, and half the height could be a bridge.

[@Blox117]

the most efficient one is to ban 4 wheelers

[@PureMatteo]

how do you print as markings the results of the lane connection toolrs ? widening an intersection so the turns don't meet each other wase eye opener for me. and i'd love to create beautiful markings too :)

[@BiffaPlaysCitiesSkylines]

That last one was just ❤

[@YUMBL]

My favorite name so far is “Divergeabout” 🤪

[@MarkFitzgibbon]

I was patiently waiting for Biffa's response to that divergabout. Marvelous.

[@cm24624]

@@YUMBL Diverging Donut? lol

[@rileywhetstone1755]

@@cm24624 hhhmmm Donut! lol

[@carstenzimmermann4435]

@@YUMBL since 'diverging diamond' sounds precious I'd call this gem 'diverging pearl' for it's circular shape

[@rikschaaf]

Your "Roundabout" solution is basically just your intersection solution, but with the lane crossing points spaced out more. If you didn't have the traffic lights in your intersection version, the roundabout solution would definitely make it safer in real life, because you don't have to look both ways when crossing. You look one way when crossing the first, drive 20m and then look the other way at the second crossing. To prevent congestion on the "Roundabout" itself, I'd say give right of way for cars that exit the roundabout and make the ones entering the roundabout yield. That also nicely follows the rules of yielding to cars from your right.

[@alleycatlordoflunes9689]

Agreed, Can really imagine quite a few real life downtown locations that would've had traffic travel a lot more effeciently with a solution like this. Thanks Yumbl, and Rik for the extra right of way suggestions.

[@YUMBL]

The entering traffic is meant to yield, yes. Then they make their left and leave.

[@YUMBL]

You don’t need to bash the US about it though. Not really called for. The rest was nice though :)

[@DarthPoyner]

@@gi0nbecell Show us on the monitor where the highway system touched you. I am sure your Road building company is the greatest of all time and you have figured out all of life's intersection issues. Take some time to chill and realize that nobody cares what you think.

[@jcc5018]

@@gi0nbecell Sounds like you need a therapist man, you appear to have some issues you need to get out. And our war for independence has nothing to do with roads. We didn't fight to get rid of our traffic woes. (man , that would be a stupid thing to have a war over)

[@KidWiz3]

I'm gonna go with a divergeabout. Sorta reminds me of the concept of diverging diamond intersections, where the left happens separate from the straight through traffic, but that's the best I got. Love the idea, I can see myself using it, especially for the cool aesthetic it provides

[@dduncane]

yeah, it looks a lot like a diverging diamond, in spirit if not in shape :)

[@CarsandChris]

Divergeabout is the best name for this

[@rtpedroplus]

Couldn't agree more!

[@stuchly1]

I would love to see more "cursed but functional" constructions! Even if they were only feasible in-game and not in real life. Unnecessarily overbuilt things even, just because you can. This was great fun to watch!

[@ChaoticNeutralMatt]

Agreed!

[@dinamosflams]

I think this construction could even work in real life and be safer than a lot of intersections!

[@xKiLLzZx1]

@@dinamosflams It could work but I think it wouldn't be the most cost efficient.

[@dinamosflams]

@@xKiLLzZx1 neither is the existence of houston or florida

[@Sebastian-oz1lj]

@@dinamosflams this thing exist in real life

[@luizfelipefranco5381]

Well, as simple as the name is, I think I would probably call it a “Contraflow turbo-roundabout”. It’s simple enough to sell and explains quite well the usability of it. Nice design bow. Never tried using VOP with tunnels before. Might give it a shot someday

[@YUMBL]

The tunnels are much harder to work with, but an extra bypass is beautiful :)

[@stamptest3957]

It kinda looks like a braided roundabout

[@AkhierDragonheart]

@@stamptest3957 Since the intersecting roads meet perpendicular it can be referred to as being woven together. That means you could call this a weaveabout which I just think is delightful. So yeah, Contraflow turbo-weaveabout

[@karlrovey]

It's more a hybrid roundabout/diverging diamond than anything.

[@muziqbox]

I like Karl Rovey's idea. It's a diverging roundabout.

[@fossar_]

Omg literally last night I was trying to think of compact, 3-level intersections for some city-centre motorway junctions in the new city plan I shared in your discord. These designs are near exactly what I came up with. I didn't work out the last iteration you came too though, really nice to have confirmation that what I was picturing has a chance of working when I get to building it in-game!

[@YUMBL]

Use it’s power!

[@popquizzz]

Your last item is called a directed access half-round about, because in all instances the maximum procedural completion of a trip through this intersection is at a maximum one-half the circle of the round-about, be that clockwise or counter clockwise

[@ahmedkaif5063]

I LOVE this Monstrosity..... for a long time I've looking for ways to make roundabouts work in areas with heavy traffic (such as traffic from industrial area exiting into an arterial), and generally the solution was to make a number of bypasses and a complete mess (or timed traffic lights which work great but maybe out of place on a free flowing arterial). This MONSTROSITY is just what we needed!!! I will suggest names such as "Monster-about" "Bi-Directionabout" "Utter-Mayhem about" "Carnage-about".. Okay I got carried...

[@YUMBL]

Love it 😂

[@anthonystahl8996]

Bro ,I was working on a spot today, running buses galore, island city, and fun road networks work, try em, I'm on islands, so every place is different with different interchanges and junction's it's so cool

[@jayayerson8819]

How about, 'doubly diverging compact circle interchange' or DDCCI?

[@inyobill]

Monstrosity in terminology only, elegant in design and function.

[@CapnSlipp]

The “monstrosity” not-roundabout intersection bears some resemblance to a diverging diamond intersection, which works pretty well IRL (there’s a few in Minnesota, especially near the MSP airport / Mall of America area in the Twin Cities). So maybe you could call it a “straight-bypassed diverging diamond roundabout”?

[@mr.boomguy]

Long name, but describes the intercection 😁

[@nomadMik]

I saw a diverging diamond in this solution, too, but with an extra underpass. (DDs are actually quite common in Utah as well. I don't remember seeing one in Minnesota, but I just took the I-90 across it, with a detour for the twine ball.)

[@michaelchamberlain9649]

Diverging Donut?

[@johnwheeler5354]

@@michaelchamberlain9649 Diverging donut decribes it perfectly.

[@knoodle6848]

Only 4 possible contact points for that last intersection? I dont think I have ever seen one like that. I wonder if its already implemented irl. Seems to work great.

[@davidroddini1512]

I don’t know if it is used irl; but if it isn’t, it needs to be!

[@YUMBL]

It works better than it deserves to.

[@armadillito]

@@davidroddini1512 it may have slightly fewer conflict points than a roundabout but, at least as shown, they’re perpendicular rather than merging. That makes visibility poorer and collisions much more dangerous.

[@YUMBL]

Visibility is better.

[@armadillito]

@@YUMBL maybe it's a marginal thing. As I visualise it, the point you cross the yield line you need to look almost over your shoulder to be sure it's clear of fast moving cars, whereas a roundabout can be joined looking forward. And I think the potential for perpendicular collisions is more concerning! It's a clever idea, either way, I'm just not sure it's a roundabout-killer.

[@jameshg1900]

I use your bypass roundabout and bypass intersection so much in my cities - great work.

[@davidmcarthur2776]

i want that circular network asset in my city now lol.... that looks awesome and works very well it seems

[@KB-ke3fi]

no money in it....been done before.

[@DrBIeed]

I had always imagined an intersection where cars drove over or under the intersecting traffic maintaining its general dimensions but I could never envision how that would work. Thanks for sharing!

[@connoryoung4589]

The classic "bypassed-turbo-magic roundabout"! It's not entirely unlike the magic roundabout of Swindon, except it is 4-way and bypassed, so ingress and outgress is reduced from a roundabout at each corner to a single yielded crossing with dedicated purpose lanes in the roundabout structure itself

[@poruatokin]

Swindon was the first thing that came to my mind when I saw this.

[@jayayerson8819]

Swindon has more points of conflict, takes up far more space, and being substantially less vertical, probably cost a lot less to build. It also solves for a more difficult set, being 5 roads, for which 'throw bridges at it' doesn't work, and doesn't have to deal with the same volume of traffic. So while I say it has more points of conflict, it's not proportionally *much* more, and I guess I can see where you got the comparison, but it wasn't obvious.. For future reference, you may wish to consider the word 'egress', as although it's irregular, it is still the formal word in English for 'outgress'. 'When you ingress into congress, if you transgress you will egress.' Consider that sentence *pun*ishment.

[@MrCLaPlant]

The "Roundsection" is beautiful! It appears to massively cut down the yield delay and speed change of vehicles. And I'm always interested in seeing a signaless interchange. It makes me think of a interchange stack but concentrated and flattened.

[@OnTheNerdySide]

That Diverging Traffic Circle is the major league pro version of the spaghetti interchanges we all made when we first started playing the game. Bravo!

[@martho13]

these intersection roundabout basically all your vidoes referring to trafficsolutions and interfering are all just so satisfying to watch 👍

[@Warren_L.]

Wow! That's a lot of very specific, very detailed work, but the end result is amazing! Kudos to the Vanilla Overpass Project, and thank you for the very helpful tutorial. How about a "split roundabout"?

[@gamersocke2372]

Loved the livin‘ on the prayer joke at 3:23 :)

[@YUMBL]

What? I never joke about music. It’s all the same. Only the names have changed!

[@V1489Cygni]

My pitch: a roundabout where each over/underpass connects not to the road directly in front but to the road imeadiately to it's left, since in a roundabout, turning left means staying in it the longest. Basically, you put the middle segment, split the roads into two one way roads, one goes into a bridge, the other into a tunnel, tweak it with node controller and network multitool and connect to the other bypasses. That way you'd remove the longest routes of the intersection. A dedicated lane would remove right turning traffic from the roundabout so you'd have even less conflict

[@YUMBL]

Nailed it.

[@John-gv9iz]

@@YUMBL How about a round about where each lane is dedicated to its "on lane" and spiroles inward to one center lane connected to separate off-ramps (tunnels) to their respective destinations. This might be called the "Flush-About." Every turn would be a left-hand turn.

[@RARDingo]

Dude! Best tutorial for VOP I've seen! Thank you so much. Now I understand why I was having so much trouble with the nodes with the VOP pieces & can get them looking good.

[@austinquigley1992]

Wow that Urban Turbo Roundabout Exchange at the end seems chaotic yet useful.

[@mr.boomguy]

I do like how everyone are talking about the tecknical stuff, and even tries to come up with names you asked. But can I just say how calming the video background music is, and just calming and well ecplained in general!

[@mr.boomguy]

Ecsplaine = explained* My comment has recieved a heart (wich I apreciate), so I'm not editing it!

[@roevskagg]

I'd say your last creation has a lot from the "diverging diamond" intersection structure, which appears to be - and in fact are - very safe. How about "DCTS" for Diverging Circulatory Traffic System?

[@charlesyin]

That last junction is pretty much a "magic roundabout" but without being able to go straight. It's probably easier for drivers in the real world, but you cannot have an odd number of roads hooked up to the junction. Also 16:45 "a roundabout of only left turns is never going to be the ideal scenario" - tell that to British motorway engineers, who love putting roundabouts in inappropriate places, then adding traffic lights when junctions inevitably get overloaded with traffic.

[@ImperadorLucius]

imagine RL with this well design intersections, and all marked like that, would be gorgeous.

[@JdeBP]

Real life would, in stark contrast, take into account the truly terrible (highly unsafe, badly positioned) pedestrian crossings, totally ignored here; cycle paths; existing utility infrastructure; minor road access for businesses/residences at the intersection (presumably the reason that it cannot be expanded in size, after all); drainage and sewer problems, highly impacted by the big concrete walls and the tunnel; and the higher visibility provided by using a bridge, that was here called "ugly". And in real life any lane closure caused by an accident or a utility company needing to do work would totally disable traffic flow in one or more directions with this intersection, because there would be no way to adjust to a temporary alternative layout. Do not confuse this game with how real life works. The game is a vast oversimplification here that _ignores everything_ except motor vehicles, and doesn't yield "well designed" real life stuff.

[@agsystems8220]

@@JdeBP To be fair, one of the best 'traffic fixes' available is better pedestrian access, except in industrial areas. Everything else is spot on though.

[@Anonymous-sb9rr]

@@JdeBP I think this looks pretty good for pedestrians, cross 2 lanes, stand on a large island and cross another 2 lanes. If you wanted the same traffic flow on a regulair intersection you would probably need 10 or 12 lanes.

[@grumpy_cat1337]

IRL it would be a real nightmare to navigate.

[@brianstark1527]

This is fantastic!! You’re quickly becoming one of the leading C:S channels on KZbin. Keep up the great work!!

[@johncoup8054]

The roundabout at the end of the video is gonna be a "DRI" Diverging Roundabout Interchange

[@courageouschronicler8657]

Exactly like a roundabout, but completely different!

[@YUMBL]

The “roundness” is incidental and decorative at this point.

[@frojoe2004]

@@YUMBL I was thinking it should be a diamond shape!

[@jefffinkbonner9551]

It's a 'DRIVE" Diverging Roundabout Interchange: Very Exotic edition

[@trevorp-j]

Well done Yumbl. The Yumbl Notabout was a nice surprise. Keep up the great content. All of your intersection tutorials are brilliant.

[@JimEstep12071]

The overpass, every time I see this, I am taken back to FT Myers Fla, where I was amazed at the complexity and yet the simplicity of the design. Of course, this was Florida, so traffic did what they wanted, and was always a mess. There was no sunken roads either ( I wonder why). You solve the problems with your ideas. Thank you. Thankfully, I no longer live in Fla

[@ScottMStolz]

Most of Florida is swamp or near the coast. They probably avoid sunken underpasses as a general rule to avoid flooding.

[@JimEstep12071]

@@ScottMStolz you missed my sarcasm, lived there for 25 years

[@ScottMStolz]

@@JimEstep12071 LOL. Yeah I did. :D Sorry. :) I wish they wouldn't build so many sunken underpasses in Houston though. They flood every time there is a hurricane or major storm.

[@gnexjeff]

Beyond all the normal levels of inspiration generated by these videos, I'm all too grateful for the tips (or reminders) about the shortcuts, such as the "home button to surface level" shortcut. I either never really look into them or always forget their usefulness.

[@YUMBL]

Glad to help :)

[@johnterpack3940]

Looks like a "double helix" interchange to me. The lane markings give it a kind of DNA vibe. And since each road does essentially cross itself in two spots you could consider each road to be a helical path. Hence, "double helix". Maybe not the most compact or aesthetic option, but it has its appeal. As for the main topic, I really like that kit. That's a brilliant solution that creates a very authentic intersection. I just wish they had a version with American markings. I have come to prefer proper American markings on my maps. I also wonder if you couldn't duplicate the effect with regular roads and node controller. Just like you used node controller to blow out the center node on the SPUI, blow out the outer nodes on this so you could have the center bypass parallel between a pair of 1-way roads all connected to the 6-lane road. It probably wouldn't look as tidy. But it would allow you to use whatever roads you wanted rather than being locked into the vanilla look. The actual intersection might be horrifically complicated with eight streets connected to one node though.

[@YUMBL]

Interesting idea! I’ll try to wrap my head around it

[@bena8121]

The rest of the world doesn't need yellow American road markings, because Europeans and Japanese etc understand context and don't need information spoon fed to them like Americans.

[@YUMBL]

Really thoughtful stuff Ben…

[@vulduv]

11:20 you don't need to set up a timed traffic light for this. Just use the junction rules tool to enable "turn on red" for all directions. And leave it with the vanilla traffic lights. Less complicated, and the traffic lights will visually function as intended, rather than just showing green constantly.

[@StefanInOz]

My jaw literally dropped to the floor when i saw your ring or circular interchange. Your creativity and ability to think outside the box is amazing! You've outdone yourself with this one! Excellent work, Yumbl, and thanks for sharing this asset on the workshop 👍

[@CharliMorganMusic]

I had conceived of such a design many years ago, but no mod existed which made it both beautiful and practical. Now, I have unlimited power [to increase traffic flow in downtown areas].

[@Algoody421]

That last intersection is absolutely INCREDIBLE. Imagine THAT as a CENTERPIECE for a major downtown leisure/commerce area... You could make it a "4 square" concept, boxing it off with a highway around the whole thing. One section is the metropolitan zoo, ones central park, ones casinos, and ones tourist attractions like maybe the amusement park. Or even without anything special like that, you just layer in the office buildings and the dense commercial, with a couple premium dense residential strategically peppered in(so mixed zoning overall). Like I could see that in a Los Angeles, Phoenix, or even Chicago New York, definitely in Toronto or Europe somewhere. No matter how ridiculous it seems functionally, its just a great design... Like I would want that to be in my town, its visually stunning and it just works...

[@birdrocket]

It would absolutely destroy a city’s downtown. Major traffic like this should be diverted away from city center, putting it in the middle of the city would just cut the city off from itself. Not to mention all the pollution everyone would be breathing in and the constant droning noise and you’d have nobody wanting to go anywhere near there.

[@YUMBL]

You heard it here first: a roundabout would destroy downtown. Oh the urbanity.

[@_ch1pset]

omg that monstrosity is amazing. It's like a normal intersection, but all turning paths are separated into a quadrant of the circle

[@hanzheng8247]

Very cool idea! It could be called "Displaced Left-turn Roundabout" because the idea of displacing left-turn movement to left-hand side of opposite direction of flow is similar to Displace Left-turn intersection, which is an official name given by FHWA. Completely unrelated, but from professional aspect, this configuration is not actually safer than a normal roundabout in real world. The idea of roundabout is to reduce speed (which this configuration does as well) and mitigate head-on or angle crashes because theoretically these two types of crashes lead to the worst crash severity. In traditional roundabout, as long as drivers don't run into the center island (which is unlikely if roundabout is properly signed), most of the crashes are sideswipe, which usually leads to property damage only. This configuration still has a lot of high-angled conflicts, so it doesn't really mitigate angle crash, but it does provide a better guideway of left-turn compared with traditional intersection. But again, game is game, please disregard the above paragraph...

[@XavierBetoN]

I haven't played the game, but coming from SC4, I've never seen SC4 traffic and transit management better than myself but here I have a similiar spirit in other game, keep up the good work, comrade!

[@Poptartsicles]

I've been using this mod ever since you showed it in your last video, and wow, it's SO good! It's as efficient as a timed traffic light, but it does in 2 phases what a typical timed traffic light does in 4! It's a life saver! :D

[@menguardingtheirownwallets6791]

0:13 = They have intersections like that in the Philippines, and they work great.

[@astromec6303]

This is actually a great idea! I’m pretty sure it’s also pretty easy and cheap to implement this in real life when converting a junction. As for safety, I think it’s alright as the left turning traffic has a 45° view on each other.

[@tch1005]

Yeah, there are only like, 8 conflict points, 2 per left, but, the lines of sight make for high visibility, along with reduced speeds, should make it very safe for cars.N̶e̶e̶d̶ t̶o̶ l̶o̶o̶k̶ a̶t̶ i̶t̶ a̶g̶a̶i̶n̶ f̶o̶r̶ f̶o̶r̶ p̶e̶d̶e̶s̶t̶r̶i̶a̶n̶s̶　single lanes, and a lot of islands. Antastic for pedestrians

[@YUMBL]

Agreed!

[@RobiBue]

These “right of way” crossings on the “Divergeabout” are brilliant as I only see those 4 crossings as the only points of conflict which, as already mentioned elsewhere, have a high visibility safety point. Building this irl would be, although very efficient for traffic flow, very expensive due to the nature of the “tunnel and overpass” costs even though they could be built as a big dig and then covered as the construction advances. Having said that, if the “big dig” is taken into consideration, then adding pedestrian underpasses (with ramps and stairs) into the center would open the whole center area as a possible green zone. Of course safety measures would have to be implemented for “runaway cars” or cars falling off the side of the overpass - one never knows why, but it happens. Also, by adding pedestrian underpasses, exit routes for eventual accidents in the tunnel could be implemented, and also could be used for maintenance access. The only thing is, some form of drainage would have to be developed if a torrent (be it downpours or other flooding) occurs, but since lighting for the tunnel and underpasses would be essential, power for pumps and air ventilation should be available. Heck, it could open a whole business area for pedestrians… thinking about the way exits from some train stations in Europe are built where you can exit the station under ground and have shops and other facilities down there… I think I got somewhat carried away 🤪

[@Britany406]

@3:25 😂😂😂 I do enjoy your subtle humor

[@sloppypancake6656]

Love listening to these videos when designing my cities. Interesting and informative, and great narration

[@ihatearial]

Loved the "Anti-Roundabout". The Idea is in almost the same approach that I've already took on a diamond interchange without signals.

[@danielartok3886]

The harderst thing I ever tried in the game, those nodless roads can be trouble when you are not used to them. Anyway great forbidden technique for hardcore planners.

[@Magickyaaron1987]

As a British person, seeing that 'roundabout', I had to spit out my tea and crank up 'God Save The Queen' to max for a good half hour Great vid

[@Dinkfod_Q_Oglethorpe]

Double diverging diamond with a straight bypass. So sweet to see.

[@booksteer7057]

We could call it the triple-D 😃

[@approachingcalamity9403]

Ah yes, you did my over-under idea! I love it! So exciting!

[@hamstap85]

The last one, which I personally name the "split diamond" or "diamond express", feels to me like it could be the safest for pedestrians IRL. Have each side of each leg off the circle cross the circle parallel-ish to the diameter, with a pedestrian plus in the middle, as well as walking on the inside and outside of the circle. You'd be crossing one lane at a time, maximum of 4 lanes crossed. Vehicles at the crossing points would be slowed due to turning and yielding to each other anyway.

[@lukasmax6984]

That's a lot of cool stuff. I'm still amazed and have been watching this several times in the last 12 days.

[@unleet-e1r]

Bypassed contraflow roundabout with dedicated right-turn lanes. Doesn't exactly roll off the tongue, but I think it's accurate

[@jefffinkbonner9551]

3:22 "So half way there. Livin on a prayer." That was delivered in such a perfect monotone that I *almost* missed it. But you can't slip [lane] past me that easily!

[@YUMBL]

;)

[@Admiral45-10]

18:46 Formal name for this is _turbine crossing_ - the situation in which every direction has one specific lane on crossing.

[@s6boystu]

I like this. Thinking outside the box and very efficient. Well done, Sir.

[@DJarr216]

the "cursed" roundabout is just a streched crossroad without lights. and instead of 1 smooth turn you're basically snaking around the corner. So i will call it circular danger noodle. The 1st roundabout basically only had 1 lane because the outer lanes you had set up as right turn slip lanes. I'm guessing the backing up occured because all left turn traffic had to share the inner ring of the roundabout. The "fix" there is to increase traffic AI so they better know how to merge i think. and maybe an extra roundabout lane for left turn traffic.

[@YUMBL]

The yields in the circle worked excellently though

[@sewi2go]

I think the issue is cars going straight are also using the roundeabout. maybe increasing speed in the tunnel-bridge and managing roundabout better would help

[@YUMBL]

The tunnel and bridge are already 40, which is the speed pf the main road. Reducing the roundabout is the sensible solution, but it becomes too slow to keep up regardless.

[@sewi2go]

@@YUMBL I meant to do that to make them prefer the overpass rathern than choosing roundabout to go straght. Redusing speed on the roundabout is probably not a Good idea you're right there

[@player1537]

I don't play Cities: Skyline but I watch all of your videos about traffic management because I find it fascinating. May I suggest "Criss-cross Roundabout Sauce"?

[@YUMBL]

Love it! Thanks a lot :)

[@anson1269]

Once again accomplished the unimaginable! This series is becoming more and more like Mr. Incredible canny meme LMAO

[@tristanjohnson822]

This is cool to see. Where I live, in Ethiopia, we have many intersections like this in my city, sadly we still have bad traffic here. But I'm glad to see this tutorial, now I can make my builds feel a little more like home

[@BurnedBaconGaming]

Looks like a single point magic roundabout or something similar. Maybe bidirectional traffic circle. Either way it is indeed cursed. Edit: Forced flow magic roundabout?

[@OrangeC7]

Anyone who casually quotes "Livin' on a Prayer" everytime they say "We're halfway there" deserves a win in my book

[@YUMBL]

It’s got me where I am today!

[@TheLaughingDove]

As a huge biology nerd, I commend you city skylines people for making me finally understand that some folks actually do find roads beautiful and even being able to see it myself. (I'm still hoping for ways to make a fantastically well funded, wildlife-movement-focused city that privileges migration and dispersal routes and lets pockets of reserve be connected into continuous habitat....we all dream of different highly specific things 😂)

[@YUMBL]

I’m glad to hear it :)

[@PLATONU]

as a biology nerd.. you could see it like an theorical exercise... you know, streets as veins and cars as cells... then you can figurate that the heart is a roundabout with 4 lights for 2 different circuits

[@Voxination]

For new "round"about name I would go for "Over/Under splitabout", that said, I've tried to pull off a 3 way intersection version of this in one of my cities but that venture failed horribly every single time, this time it'll probably work out because you've shown me the step by step of it, for that, I thank you.

[@YUMBL]

Good luck!

[@Voxination]

It was a bit of a hassle to build but it worked wonderfully, replaced two of my main problem crossings twice, you brilliant man, you've saved my city a considerable restructuring of the road network!

[@YUMBL]

Glad to help :)

[@buckrodgers1162]

I'd call that last one an 'Efficient mess'. It looks "stupid" yes, and it's a mess again yes, but one can't help but to notice how efficiently it moves high density traffic through.

[@YUMBL]

That much is undeniable.

[@carstenzimmermann4435]

So many hours Info the game, yet still frequently builds nobody has built before. What a Game - thanks for making the community great

[@martylawson1638]

Liking the "roundabout" interchange more and more. Add a pedestrian plaza in the center and some lights to allow pedestrians into and out of the center safely and you may have found a way to pack a high capacity interchange into a city that will also be pleasant to walk across.

[@TheCrappyCompletionist]

absolutely incredible. Looks great and quite realistic imo. Vanilla overpass project really has helped me quite a bit

[@cheat200]

If you look closely at the first roundabout, you can actually see that a lot of the cars weren't using the over/underpasses. They for some reason decided that the roundabout was faster to go through. Giving some encouragement to the over/underpasses might actually fix the traffic quite a bit. While it might not be the best solution, one solution I usually employ is slightly bumping up the speed limit on the over/underpasses.

[@Theigor747]

Man, i found your channel today, and I loved it! Keep going, i'm gonna watch all of them lol

[@d1p]

The basket weave roundabout. In my fantasy world where the lefts could be grade separated instead of the straights (leaving the straight and right to work through a turbo roundabout,) I think the title would still work. But I don't know how you could have grade separated lefts in this footprint, even with this mod. They would need individual one lane ramps. You could do it in real life, if you had the money and will, but I think it would fry City Skyline's brains.

[@Pystro]

Well, it's just 4 more meshes to make if the asset pack's creator wants to allow that: single-lane tunnel entrance (right half of road only) - going down; single-lane tunnel exit (right half of road only) - going up; single-lane elevated road-on-wall (right half of road only) - for ramping up and down; single-lane bridge (on pillars) (right half of road only) - for curving over the intersection. Would be super tight though, with the additional concrete barrier between the up and down rams needing to fit into the width between the flat outer lanes.

[@StarHorder]

thats what i was thinking, yeah.

[@banlammarpnas9555]

Has anyone done this?

[@Chris_Cross]

Yumbl: **makes this cursed roundabout** Biffa: *"Whomst has awakened the almighty one?"*

[@CrabbyGameGuy]

Man, this is just brilliant. I have to try this. Thank you!

[@theslenderfox]

Immediately made me think of the diverging diamond, love it!

[@A_Lesser_Man]

i found the last under/overpass exchange thingy most satisfying.

[@Blade-hf9po]

Thank you for that last roundabout. It works great. Mind you i dont have your skills with node controller, but it works anyway.

[@WolfyLuna]

Thank you so much for this tutorial. Even the simple home key thing was totally new for me despite playing the game for a long long time now :)

[@Minerguy341]

Honestly, that roundabout correction looks beautiful, would love to see this in reality.

[@LudicrousxArts]

I feel like the last iteration is the equivalent of a double diamond interchange. It looks stupid but once you see how it works, it just works. Well done. I'll have to download those mods when I get a chance. Didn't know they existed

[@diamdante]

this has gotta be one of my favourite intersection experiments so far. I'll be using the first in my own city for sure, and the second one too just for the "tourist" factor lmao

[@YUMBL]

It would be quite a sight! 😂

[@watchthe1369]

Diverging Donut! beautiful.

[@AA-PYT]

This is a whole different section of youtube. Love it!!

[@AA-PYT]

Thank you so much for liking the comment, I wanted to ask, this intersection in steam is different from video, over there when you subscribe it, you get another lane, the innermost lane, it is not working for me, the cars donot go around it. (I hope you can understand the lane im trying to point at)

[@YUMBL]

I’m not sure what you mean

[@AA-PYT]

@@YUMBL the innermost lane which serves as a roundabout (in ur asset, diverging weaveabout) TMPE, MOVEIT are not detecting it. One way is to please check that all lanes of that intersection is working or not.

[@AA-PYT]

How do i show you the issue? Please guide.

[@YUMBL]

Maybe upgrade the road w upgrade road tool and see if it fixes

[@TurboPepsi]

This is not cursed - it is genius level traffic management. Bravo!

[@randomsandwichian]

I came up with the same pattern for the roundabout design on a whim, without the flyover. Funny seeing this pop up again unexpectedly.

[@DoomieGruntVentures]

Reminds me of how Charlottesville VA managed to unscrew US-29. One of the busy intersections got overhauled into a compact SPUI. It was actually pretty effective despite naysayers panning the construction as more destructive to surrounding businesses.

[@TransportSimulatorNationTSN]

This should have been some sort of DLC, but they gave us this hilarious airport DLC.

[@wookie-zh7go]

A "contraflow about" is the only way I can describe that. Dam that thing is elegant though. Would like to see the first one with a delayed left hand turn. Nice job

[@Drakonpirata]

that last one looks like you combined a normal 4way, a round a bout, and a diverging diamond, looks awesome but also looks like a nightmare to drive

[@Kleavers]

Wow that's a cute diverging roundabout.

[@stevengalloway8052]

😳 This...is...INSANE! 😆 I think I'd prefer the roundabout one... 😏

[@jasonjtg21]

I actually wanted the round about version to work. I will own this, the times traffic lights are still intimidating to me. However I think it looks. Leaner to do that version. Thank you for showing this and I am going to implement it this weekend. Thank you for the play by play to make set up easy.

[@e2mastermind]

Imagine driving in a new city you have never been too and then all of the sudden come to this twistabout that you have never seen before. OMG would be crazy and so much fun at the same time !!

[@YUMBL]

You would only see a yield if you wanted to go left. Its like an interchange, you don’t see it from above while you’re driving it.

[@Vicar_Tineamica]

12:30 Pedestrians have to wait an eternity for their light to turn green. 12:40 Perhaps you should disable those pedestrian crossings.

[@YUMBL]

They would get their own cycle.

[@DoomieGruntVentures]

I also believe the word you're looking for for that over/underpass diverging roundabout is "Blursed". Its cursed because it breaks a lot of rules IRL, but it also soaks traffic like a sponge & disperses effectively. Its oddly satisfying while also looking terrifying. Hence the term Blursed.

[@LeonCoretz]

I was born and lived in Seattle until age five, and I remember day dreaming of someone very close to your stacked intersection. Now I wish I had drawn it! Totally forget about it until now.l; I'm so glad someone rendered it so beautifully 😍 Building from other ideas, I'd call your final creation a "hi-flow triple-stack contraflow (or diverging) roundachange".

[@LeonCoretz]

something* not someone

[@aarontrupiano9328]

the diverging weaveabout is absolutely perfect for the kinds of cities i tend to make. without it everything turns into a log jam within a couple of minutes if vehicle despawning is turned off.

[@reverendbrown]

You madlad. Saw you post this to reddit and I had to see it in action.

[@YUMBL]

;)

[@TAiiNE]

And now to wait to see this on the workshop :P (and for future readers, this was made before it was, if it ever will be :P) Love your ideas!

[@YUMBL]

Soon ;)

[@rayopeongo]

I didn't know this program existed, but I like it. One suggestion I would make, would be to double the through lanes to 2 each direction. That would widen your bridge and tunnel to 4 lanes instead of two. You would also have to combine your left and right turn lanes into one as they pass by the beginning of the ramps, but could be split back again into dedicated left and right turn lanes once they are past the ramps and could move under the bridge/over the tunnel. This design assumes that there are equal volumes of traffic going in all three directions: straight through; turning left; and turning right. I'm not sure what percentage of intersections have that distribution of traffic.

[@YUMBL]

There is vastly more thru traffic on this map.

[@rayopeongo]

@@YUMBL Ok, I'll accept that. My mistake was assuming that just because there was 1 lane in each direction for each option: straight, left and right, that one third of the volume uses each lane. However, there might be a bit of a problem up-stream as all of the through traffic has to move to the far left to get through the intersection.

[@YUMBL]

It passes more thru traffic easily because its free flowing. No conflict. Space would need to be left for lane changes before and after for turns at other intersections

[@natep6729]

I live in Southern Malaysia and this intersection is very common in my city, especially around the city centre. Very efficient and easy to navigate.