Roundabout?

[Sinname]

Hi everyone!

There will be roundabouts in Cities: Skyline?
I think it's a good idea, realistic, beautiful and very handy.

If so... Will the gamers be able to customize roundabouts?
Something like this (Ex):

 

[TWarrior]

there will be oneway roads and a curved roads tool. so basically you can do your own roundabouts in any size! also i think there will be a park menue, so you can design your own roundabout filler.

 

[charlesnew]

Yeah, I think they said that there's a roundabout option in the decorations tab. You can probably make roundabouts form curved roads anyway. Basically that TWarrior said.

 

[Sinname]

I hope so It sounds GOOD!

 

[Darkath]

A round about designed with the curved road tool would look like something like that :

[video=youtube;S_9WR_1lqK0]https://www.youtube.com/watch?v=S_9WR_1lqK0#t=95[/video]

Rather than a glorious Arc de Triomphe.

 

[Sinname]

I'm sorry but I don't really like it, traffic lights on the highway are so strange. I want normal roundabouts

 

[TriGlav_2000]

Tomačevo roundabout The traffic lights on the above roundabout were installed for safety reasons, because car accidents happened almost daily. It was just a normal 3 lane roundabout before it was made ''turbo''.

 

[Darkath]

I'm sorry but I don't really like it, traffic lights on the highway are so strange. I want normal roundabouts

Exactly

The issue with a roundabout designed with the road tool is that the traffic would flow as if it was a road with a lot of intersection, and designing normal roundabouts like the Arc de triomphe shown above, or smaller average european roundabouts, would be impossible.

no signals, no complicated markings on the ground, just a simple roundabout.

 

[Ne0Que]

the problem with the game is that every other connection to an existing road will result in an intersection. So Creating a roundabout is not possible because when connecting roads to it will result in a intersection maddness ON the roundabout. You don't want intersections ON the roundabout.

The red circles show critical intersection points. You don't want the cars to wait ON the roundabout.


And this result is really bad. This problem also occurs on connecting on/off-ramps to highways. You will get ugly, unrealistic totally insane intersections in the middle of a highway. When they developed the tool they forgot a couple of things: Roads are pairs of lanes. Roads are not just roads.. The problem will also affect traffic flow along the way. An intersection on a highway is terrible! The road tool needs to be rewritten. And so, that a road is existing about a pair of lanes. The lanes are important. Currently you draw a line and the game constructs a road and the road consists out of path(s). These paths are used by traffic. It should be the other way around.

When you draw a line, or maybe a pair of lines (depending on the settings) you are in fact drawing paths (or lanes if you will). From a configuration of paths a 'road segment' should be generated. It depends on the situation and wishes what kind of road segments will be drawn. Now the game can procedurally generate the most beautiful segments. Merging lane segments, normal intersections, roundabout intersections, bus lanes .. you name it. To take it even further, one could extend on the lanes approach to create railroad, pipelines and power lines.

Even though it looks quite okayish in simple neighborhoods.. i'm not really impressed at the current road tool at all. The fundamentals are just wrong.

In short: the user should draw 'lanes' not 'roads'. Roads are generated from lanes. Next step: The user should be able to draw pre-defined pairs of lanes: In-game this would be seen of course as one-way roads and normal roads or three lanes or four lane roads. But the underlying algorithm is much better. In the end a user should still be able to draw a single lane from a 2 way road (which are a set of 2 lanes going opposite direction of each-other). The transition should be handled by the game: generate a transition segment. Very simple.

 

[Rangerzero]

Roundabout cannot be done with the current tools we know. We'd need a roundabout tool. I hope there will be one.

 

[charlesnew]

Well, I did hear there was going to be a roundabout tool anyway.

 

[Sinname]

I hope devs hear us and take it into account.

 

[Person012345]

From what I understand, roundabouts will be in the game. Whatever form that takes, I think I've heard them say that roundabouts will be a thing.

 

[WilfriedWebber]

the problem with the game is that every other connection to an existing road will result in an intersection. So Creating a roundabout is not possible because when connecting roads to it will result in a intersection maddness ON the roundabout. You don't want intersections ON the roundabout.

Well, that's how roundabouts technically work: they are a piece of circular one-way road, and every adjacent road forms an intersection with it.

 

[Rangerzero]

Well, that's how roundabouts technically work: they are a piece of circular one-way road, and every adjacent road forms an intersection with it.

But you don't stop IN the roundabout. That's what he means.

 

[WilfriedWebber]

That depends on local rules and signage. On some roundabouts, you have to yield to entering traffic, while on others, you have to yield to traffic in the roundabout before entering.

 

[Sotrax]

Roundabouts are made to let the traffic flow a lot better, then a traffic light and an intersection could ever do. But within a certain size and traffic amount the roundabout gets overfilled and the accident risk increases drastically, so that almost all big roundabouts I know are ruled with traffic lights and road markings, so that they just look like a roundabout, but they are no longer roundabouts in legal traffic sense.
So what we could build with one way streets are no roundabouts in legal traffic sense, but similarly roundabouts which worked well in CiM2, and I think it will work well here too.

 

[wakko2k]

I hope we'll see proper roundabouts where cars dont stop inside it

 

[Person012345]

That depends on local rules and signage. On some roundabouts, you have to yield to entering traffic, while on others, you have to yield to traffic in the roundabout before entering.

The former is not common and they're called traffic circles. They're pretty much obsolete nowadays, true roundabouts are superior. The only reason to even include traffic circles is in case someone wanted to recreate a famous one like the arc de triomphe.

However, traffic-lighted roundabouts are common enough in Britain at least and cars do have to stop on them.

 

[KR153]

In the last few years they have rebuilt some crossings here in my town as roundabouts. The difference is tremendous. Traffic wise they are as simple as they are effective. In CXL we had ploppable roundabouts where you had plugs to connect the streets on. On the one side you had perfect circles, on the other you had only roundabouts that had 4 plugs. That is not very flexible, since sometimes you may use only 3 streets or 5 to connect.
To have realistic roundabouts you would need a street system that gives one street priority over another. All of that was brought up before and has yet to be clarified by CO. As usual, I am sceptic about that.