What am I doing wrong? Roundabouts

[Skyd]

Ok so I've spent I bet at least 3 hours on this roundabout and I'll get it so I think it's working well but then look and it's actually not. If I set it up "standard" like it is in the screen shot below, the roads coming from the west and south seem to never clear up, the traffic just waits WAY to long to enter the roundabout. I'm using shift+ctrl+click to setup the roundabout.

I can get them to pull out if I micromanage the lanes and use some "Hugo there" but it forces them to go places they don't want to and they're going down the road and turning around or finding alternate routes.

When I look at this roundabout I think it should be able to handle a decent amount of traffic, and it's just not at all. I've watched dozens of videos, alot of them Biffa and I see much much heavier traffic working just as I have mine setup. I think.

Lastly - I have tried my simulation accuracy at low, medium, and high. It doesn't appear to make any difference. I've also messed with my Lane dynamics and tried anywhere from 50%-100%. None of that seems to help either.

I'm convinced I'm making some bonehead mistake and causing my own problems.

https://steamcommunity.com/sharedfiles/filedetails/?id=2847246399

[MaxFX]

Your roundabout looks fine. You've got the right amount of lanes on them. Can you make an additional screenshot with the lane connections visible? Best to keep 'Dynamic Lane Selection' set at 50%.

If you want to know how to apply the right lane connections, priority signs etc. Try my Roundabout Pack. All roundabouts in it allready have the right amount of lanes, and TM:PE settings applied to them.

Hope you've got the necessary DLC's for it though.
https://steamcommunity.com/sharedfiles/filedetails/?id=2735787947&searchtext=roundabout+pack
Know that roundabouts, just like intersections, have their maximum capacity. If the roads still get congested, you need to build alternative routes.

[Skyd]

I don't have those DLC's yet but I plan to get them so for now I've favorited that :-)

I'll go take some screenshots. I don't feel like there's enough traffic coming in at this point to make things hang up. They're just not pulling out into the roundabout.

I'm not currently making any lane connections with TMPE, when I do everyone seems to exit at the first right hand turn they come to and not switch lanes. Be back soon with some more screenshots

[Skyd]

Ok here we go. The first one shows my yield signs for traffic entering the roundabout. The second one shows my junction settings. I didn't bother taking one for lane connections because I'm not using any at the moment, although I have tried doing that for the incoming lanes and it seems to just force everyone to enter and immediately exit at the next off ramp.

https://steamcommunity.com/sharedfiles/filedetails/?id=2847280499

https://steamcommunity.com/sharedfiles/filedetails/?id=2847280514

[MaxFX]

Trick with roundabouts in this game is to make sure traffic is using both (or more) lanes when approaching the roundabout. This makes sure that at least two vehicles will enter the roundabout at the same time when that's possible. To achieve this I apply lane connections.

Here are two screenshots with how I would apply the lane connections. One is for a rounadabout with four road connections, the other is for the one like yours which has three road connections:

https://steamcommunity.com/sharedfiles/filedetails/?id=2847289372
https://steamcommunity.com/sharedfiles/filedetails/?id=2847289298
If you follow the lines you'll see how traffic will move around on the roundabout. Specific lanes for specific destinations, and the possibility for traffic to make a U-turn.

If you have any nodes in the middle of the roundabout (in between two road connections) make sure the lanes are connected to each other one on one. (i.e. the right lane connected to the right lane, the middle lane connected to the middle lane, and the left lane connected to the left lane.)

[Skyd]

Hmm ok, so I've done parts of it that way like in your 3 road example but not completely so I'll give that a try. No nodes between road connections, I removed the extras so that's fine. It's just odd how the game puts such a delay on vehicles pulling into traffic, I'm guessing it's the pathfinding algorithm taking into to consideration the lane changes of other vehicles. Thanks for the help let me give that a try and see what I get.

I mean I could just turn traffic despawning on, but what fun is that.

[MaxFX]

Originally posted by Skyd:

I mean I could just turn traffic despawning on, but what fun is that.

I agree. Getting rid of a problem isn't the same as fixing it.

Taking another look at the second screenshot of comment #4, I see you've got the option 'switch lanes' or 'lane changing' applied to the roads approaching the roundabout. This makes both lanes of the approaching roads act/function the same, as traffic can choose any lane on the roundabout from either lane on the approaching road. This in turn ensures that all traffic approaching the roundabout is doing so in one and the same lane. So if you prefer not to use lane connections, I'd disable that option on these nodes. Make sure you have 'Dynamic Lane Selection' enabled though.

[Skyd]

That makes sense, I was kinda messing around with this and really wasn't sure how to leave them.

[MessengerOfRage]

Originally posted by Skyd:

... the traffic just waits WAY to long to enter the roundabout.

strange, your roundabout looks good, as do your priority signs and junction restrictons.
Max did a great job of explaining the connectors.
this roundabout should work.
maybe the problem is outside of TMPE.
the base game comes with an option to set stop signs at junctions, it's easy to forget with all the options TMPE has.
maybe somehow these base games stop signs got placed there?
you can check for them in the Traffic Routes info view if you switch to the 2nd tab "junctions".
https://steamcommunity.com/sharedfiles/filedetails/?id=2847322566