A New Approach to the Roundabout - The "Pinwheel" (Turbo Roundabout Variant) 

Here is a vanilla optimized version for use in your cities! It’s reversed from the version in the video. Safer for right hand traffic ;) steamcommunity.com/sharedfiles/filedetails/?id=2646965873

That was nice! :-)

The roundabout guidelines I have read explicitly disincentivize making the entrance and exit angles too smooth to promote more caucious driving instead of maintaining speed. Of course this is CS so if flow is all that matters, with perfect drivers this may be far better. Not to take away from the aesthetics or effort that went into creating this design, I just think it's something to consider.

Oh boy, you know you are too deep into Cities: Skylines when you get exicted about a great roundabout design! Can you upload this to the workshop? I'll try to make my own template this evening :)

The sudden satisfaction when he ever so slightly moved the 90 degree turns was unbelievable. I am definitely gonna have to use it, looks so mesmerizing.

It's so beautiful! * cries in console *

This is gorgeous. Kudos to the contributor. Thanks for passing it along to us and showing off the build process and detailing.

I feel like the roundabout itself could be a single lane here, unless it is VERY busy. In the Netherlands we have a lot of decently high throughput roundabouts with only one lane. In such a case the "Inside lane" of the roundabout is a differently paved area (usually slightly slanted or with a low curb to discourage cars from using it) to make it easier for buses and 18-wheelers to get through the roundabout.

That's one good-looking roundabout, and simple enough to make (or that might just be the way because of the way you explained it) Also, after you finished with your decorating, it looks like something out of an embroidery tutorial!

I love this! I'd love to see you putting the markings in as well :)

love the ambulance at 11:56 just yeeting itself through the right side of the intersection

We need a 10 hour video with some lofi beats with the roundabout in the background just doing its thing.

Wow this is such a great idea! It’ll probably take my local council only about 300 years to trial it.

I went from barely playing this to all of a sudden putting in 31 hours in it in a week and watching videos about intersections.

Wow this is super awesome looking, I’m gonna have to try it when I get back from thanksgiving with my family. Definitely deserves the thumbs up.

i love roundabouts because they're great ways to work windmills or watertowers into smaller towns without interrupting your city planning too much

I have to say it is a bit of a pipe dream to think humans would like to sit on a beautiful bench under beautiful trees to then look upon or be bothered by the sound of a busy and asphalt grey round about. When it comes to actual use, I would propose to keep car and human infrastructure more seperated. Still I love the aesthetics of the roundabout at the end, good work!

Very interesting roundabout, ty for posting. Personally, i utilise roundabouts a lot and have two types of collectors for my citities, one of which uses roundabouts. I developed this approach after living for 10 years in Canberra (Australia) which utilised roundabouts in a similar way, and as a result, traffic jams basically do not not exist, even in pique hour. Parliament house is on a Giant roundabout known as capital hill (I used to work right next to it). Cheers CC123.

Being brith, this sets my teeth on edge. A visually interesting as it is, in a real world scenario, it just wouldn’t work. Having people diverged and merge at the same point potentially at speed because of the smooth angles is a recipe for disaster.

Yay, another thing to explore in this awesome game, thanks for all your tutorials, I am not very inventive when it comes to intersections, so all that you share work awesome in the way I have been implementing it into my city.

This looks like a great design. I could see a pinwheel being a particularly elegant solution to a roundabout intersection where 1 or more directions has a large volume of traffic consistently turning right as a bypass without using up excessive space that some of the more traditional roundabout bypasses tend to take up. I could also see this supporting an overpass style bypass for large amounts of straight or left turning traffic traffic too, just would need a bit more engineering to pull it off but doable.

Can't wait to see Biffa try to rebuild this😛😜

Very humble! Very yumbl! :D I love the design! It's really interesting to see how traffic simulation can be optimized! Feeling inspired to make an independent sandbox with custom tools and solutions (node editing is very powerful, and customized tools like walkway bridges)

Thank you for this, not just the roundabout but the technique

Gonna have to put this in my city at some point. Very nice! :)

I really like the simple complexity of this one. This is something that I feel confident in trying out on my own as well. Thanks for the ideas!

This is super cool, I can’t wait to build one. One thing I might experiment with is making it so the traffic approaching the roundabout yields to the the traffic in the roundabout to keep things from backing up but yeah cool design, thanks.

Looks great and love the fact that the traffic taking the first turning off (from where they enter) means they never really join the roundabout to begin with, however I did notice that traffic already on the roundabout has to cross over the traffic joining the inner part of the roundabout. In traffic-lite situations this probably will not matter but if traffic builds up it could become a choke point - and the whole idea is that a roundabout keeps traffic moving.

this would look amazing to be used as a central park of a neighborhood with little traffic

"It's come full circle." I see what you did there. ;)

This is honestly a thing of beauty - I do feel however that there's a good reason we don't see this type of roundabout that often in real life. Having the double lane on the outside road is indeed a must-have. On top of that though, the left-hand lane (which is for entering the roundabout) NEEDS to have stop signs. There's insufficient visibility on to the roundabout you're entering due to the narrow angles anyway - but even more so because the people EXITING the roundabout have to cut across you to exit. This I think is the biggest issue, and is why most traditional roundabouts will have people exiting BEFORE people enter the roundabout. If you run a few seconds from 12:17 you can see the white truck coming from the north trying to enter almost collide with a car exiting - and at roughly the same time, a small truck exiting towards the south cuts across traffic entering the roundabout from the west. These situations could be deadly in real life. That being said... I honestly don't care in-game as it's amazingly beautiful, and I love it :'D

I saw a comment and I agree with it. I feel like this roundabout would be aesthetically pleasing in a gridded city. Look at the angles, the curves.

Wish you had a collection of all the cool intersections and interchanges you have made.

Nice, lots to take away from that. I won't be using it due to the poor visibility design for traffic entering, and because roundabouts are usually placed on existing roads that don't randomly offset, but I will certainly be using some of the techniques.

It would probably be ridiculously dangerous in real life with traffic able to enter at full speed and the tricky sightline over the left shoulder for traffic entering to see and yield to traffic already in the circle. But it looks cool and may still work really well in Cities: Skylines. Thanks for showing it!

Ahh you decided to make it, nice. Will have to wait a bit before watching it later today, but looking forward to it, to see how you work the in/outflow

I want to call it a "ninja" roundabout.. it's has beautiful form, and a clean style of "assassinating" the traffic problem.. 😉

I'd love to see this in real life, I'm so curious as to whether exiting traffic would be directly in the blind spot of entering traffic, I think there would be some entertaining chaos 😁

What an excellent video show casing this very neat (Pin wheel) round about design! the end result is truly satisfying to look at. Thanks for taking the time to make this video for us all to enjoy. What a great community City Skylines has produced with all the possibilities this game has to offer. Take care out there everyone.

The beauty of simplicity! Suggestion f Newmarket: hide it in a gridded area! Apply this concept to an area with a larger grid. The "Missing" roads will get close, but not connected (just walkable). It should as well work in rectangles; collectors will continue with an offset of 1 block to the left. You'd just lose some corner houses... Simplified: rectangle-a-bout (3L), straight collectors (2+2L), the 90° turns just within large nodes (NC is our BFF)

Very nice design, though I can see accidents on there, on the left lane JOINING the roundabout to go of the 2nd or 3rd exit you need to giveway / stop as it's a neck breaker looking to the left for an opening onto the roundabout. But very nice, and thanks for sharing.

Maan, this was so good i want to buy the game, install it, throw some mods and do it myself

Beautiful! 👍 It reminds me my city planning pattern I used to apply in SC4 with a 8x8 square roundabouts and 8x16 blocks adjacent to its sides.

Saw this, watched the whole thing, Launching cities right now to build it. Beautiful!

This is in use in real life I've only seen them in a town call Shrewsbury (in engalnd) it's realy effective

In real life this would be pretty unsafe because the cars that swap lanes cant see each other that well. You would have a lot of side collisions

That's a beautiful roundabout.

Definitely trying this later for sure, been messing with different ways to do a roundabout and this one just visually looks so appealing to the standard rouad meeting a roundabout straight on. sometimes I forget the versatility of having move it and node controller is haha

Restricted to vanilla console here, but love to see these advanced tools and ideas functioning for effective use. I wonder how much better cities skylines 2 will be having all the historical knowledge of what modding fans have done. Thanks for sharing.

Very cool! I'm definitely going to try to add this to my current city!

This is actually really clever, good job!

Dunno if it has been said. I don't know if it's tmpe'd, but at the end, at around 12:26, a guy comes on the bottom left lane and does not yield. He just dives into your beautiful roundabout and almost causes a crash. Cars exiting the roundabout have to break on a dime. Surely kids and groceries are flying all over that minivan. Children crying. Eggs and flour all over the dashboard because someone could not yield at a roundabout. Other than that excellent job. I'm sure Biffa aproves.

very aesthetically pleasing :D

I've applied a custom version of this to one of my notoriously clogged crossings, in combination with another roundabout. Now the monster traffic jam hitting my city center and clogging streets miles around is gone. What a relief! :)

In Kos Greece there is a round a bout just like this near our vacation condo. It so smooth and quick

Interesting, cant wait to see it in use.

Thank you for all of the time and considerable effort it took to bring this design to Cities Skyline life. It was/is a job very well done. (Bravo) In the comments, there were multiple concerns regarding entering and exiting the round-a-bout safely, and rightly so. What came to mind was multi-level entry/exit to the round-a-bout. The entry lane could go above or below the exit lane, or the exit lane could go above or below the entry lane. This would eliminate all chances of collision. Again, thank you for your time and efforts. williamj

I've got a roundabout like this just down the street from my home, right down to the walking paths in the thumbnail!

Well done. That was beautiful to watch at the end

I live next to a similar roundabout, but at this one the streets approach the center (not looking like a pinwheel, more like a star), have 5 lanes in it, marked like a snail and have traffic lights of course.

Design looks really cool, and is probably one of the fastest roundabout designs (especially with such a small footprint). Feels like a solution in search of a problem, though - usually, you want roundabouts to prioritize the people inside it over those entering, and to make merging (especially on such a short stretch of road) slow; this design kinda does the opposite. There may be a few use cases (perhaps industrial areas, where trucks don't like the sharp turns of regular roundabouts), but I wouldn't like this either in a residential area, or at a crossing of major roads.

It’s a vehicle round-a-bout within a pedestrian-a-bout! Love it!

This thing is amazing! Very very well done!

I like roundabouts that have the filter if you are taking the first exit, so you don't even enter the roundabout. It does mean you will be merging with traffic after the roundabout if it is a single-lane carriageway. I do like the solution of a similar filter to go right ( which would be the last exit on the roundabout). Really, you only enter the roundabout if you are going "straight on" or another exit that isn't the first or last exit.

4:14 I think the correct word is tangentially, because the road hits the roundabout at a tangent to it. Perpendicular would be coming away from the roundabout perpendicular to the tangent

This style of roundabout with a “Bypass Lane” is quite common in the UK particularly on larger roundabouts that connect motorways.

Very cool! I just subscribed. Love the idea of making a roundabout also be a park area.

Looks good in animation. In reality it's one of the most dangerous intersections I've ever seen. If you want to exit any time once you enter the roundabout you have to cross 2 lanes of traffic. Absolutely nuts hahaha. You have made what would be the 3rd exit into the first and easiest exit but in doing so you've made the other exits and entry points really dangerous in a real world situation. Technically it's not a roundabout as not all traffic has to enter it to utilise an exit. Looks very pretty and symmetrical though hahaha.

i'd love to have even a fast forward version of the road marking, although this did show me a lot of good tips to use!

that is a beautiful roundabout!

This looks really nice and definitely going to put one or two in my city!

How has this elegant design eluded my brain up until this point? Time to rethink my place in this universe...

You just got a new subscriber, this is crazy!

11:55 bro that car went ZOOMING

Love the design! That is going in my next city, thank you for the content!

Woooow. That is beautiful! Now I might consider using a roundabout or two. :)

YES! Build this one today. And its easy to make. And it looks much better than standard roundabout's. thanks for this YUMBLE.

That design needs giveways for the straight on traffic comming on to the roundabout. In its current form it would just be dangerous.

Definitly looks nice, it'd do wonders to break the monotony of regular designs. As far as efficiency goes though, I'm not so certain. Straight away the proximity of an incomming lane and the next outgoing one make me think cars trying to get in the roundabout will not only have to yield to those inside, but to those exiting as well, as if the intersections had driving on the opposite side to the rest of the roads

Nice! I'll have to try it, can't wait to see how it works with the traffic going the right way.

That looks amazing

3:07 "the ness is mecessary"

Am I the only one who loves watching these videos but rarely plays the game or any city building games? Its like I want to but then when I play them I am like wow this is a lot work. :D

Oooof, that's pretty. Concerned about pedestrians cross the road. I really like this. It'd make a really pretty area for the city. Could probably make it into a custom park too

I know what I'm doing this weekend, thanks Yumbl and to the contributor. Awesome.

Smooth, yet effective and one level 😁

This looks amazing

Mad cool. Thanks.

This turned out gorgeous!

12:25 You have traffic crossing over where some people want to come onto the roundabout and some want to leave. I've seen a sliproad/on-road like this where there are frequent accidents from people trying to join the road while others are trying to leave.

There are roundabouts in the uk that approached this and they were death traps. The point of roundabouts is the approaching traffic gives way or yields. In the real world people see a straight road and forget to stop. Now modern roundabouts actually do the opposite and make a twist in the wrong direction just as you approach as it scares drivers into slowing down. The safety figures are dramatically different.

Really nice roundabout :)

Where you put the yellow stripes in the finished guild, you could convert those into crosswalks - not only would the pedestrians then only need to worry about one direction of traffic at once but would also optimise traffic flow even more.

Excellent! Innovative!

Very cool. Insane game control.

beautiful result :)

That's sharp.

You don't actually need to move the nodes with Move It, you can also change the intersection sub-nodes offset with the Node Controller, just drag them back until the outside lines no longer overlap. But definitely an awesome design!

This was great. I downloaded it and gave award!!! 🥇

This design .. is satisfying. I definitely liked this video. 😁👍