After my repeated tests, I confirmed the problem.

1. As soon as you use a two-way road to connect the edges, crazy U-turns will occur;
2. If you use a one-way road to connect the edge, there will be no large number of U-turn vehicles, even if you use a two-way road to connect the one-way road at the edge;
3. Enabling/disabling mods does not change this situation, so mods should no longer work.

Note: I can't guarantee that your situation is the same as mine. If there are any differences,welcome to discuss together. @rv

@rv Oddly enough, the crazy U-turn disappeared when I re-subscribed to the mod, so at the moment I'm not quite sure if there really are some issues with it, so I'd advise people who'd better subscribe to it to test it out for themselves.
One thing I can say for sure is that this mod will not cause errors in the game.

are you sure this doesnt work
@CW_1250

@Delta 5-1 In the latest version (1.81.1-f3) it does not work, and vehicles passing through the city will still make a U-turn at the nearest location of the two-way road and one-way road connection.

I've tested this mod quite a bit, as I was looking to fix the same issue (then I found someone has already done it). Works perfectly with the latest version of the game, and a must for anyone playing with two-way roads as outside connections.

Im having a problem (not related to the mod) where tourists only visit the city to use the public transport to leave the city. They clog up the the parking spots. Up to 1,000 cims do this.

Is a Cities: Skylines 1.16.0-f3 update coming for this mod?

After the last update, the mod stop to function. The tourists simply get off the attracions and drive around the block again to the same attraction. After some minutes, there's a traffic jam around the block of the attraction

i have a problem my tourist start to walk in the water and fly i dont know this can help me. if someone know whta can i help m pleas let me know Thankks.

Thanks for this, it still works like a charm.

i tried it out and so far worked great. no more campervans turning back to where they came from on the shortest route. and its not like it deleted campervans, i can still see a few of them but they are actually going somewhere. thank you very much

it does not work for me:
https://user-images.githubusercontent.com/26344691/174490351-33c323df-bfe8-4965-aa5a-db938f96e5d4.png

Seems to work great, except for industrial traffic which is still turning around on my city's intersections.

do you mind if we bring this to TMPE?

does this still work?

@andypuk
That is how the game played. That why the game only allow us to build on 9 tiles only as weird stuff happen at the border. You can rename a plane and see that same plane parked at your Airport. If you are using mod that remove the Border limited view and follow it. You will see more weird stuff happening.
I don't think this is a bug. It's just how the game worked. And how can this mod fix something that already in the core?

I don't believe this has fixed the problem for me. I still get citizens walk on map, grabs a parked car, drive to edge of map, cars despawns and citizen starts all over again grabbing another parked car.

seems something that bloodypenguin should implement in his "any outside connection"-mod.