I have an odd one, and i wonder if it is related to the Traffic Mod.
I built an office park just north of this road. I noticed that in the mornings, this office park would attract a lot of traffic coming from the highway (just north of the roundabout) and then take the left turn into the office park. I used the Traffic Mod to change the intersection in the screenshot as described there, with 2 lanes as left turn lanes, along with a road upgrade to provide 3 total lanes instead of the original 2, with the third lane acting as the sole straight lane.
This all worked swimmingly. Lots of traffic appears in morning all going to work, but due to the left turn lane, the traffic passes through pretty smoothly and causes no problems.
A little later on (hours after I upgraded this intersection) I started work on this area again, and wanted to add additional commercial and residential space to the south, as well as a tramline, and I wanted to upgrade the roundabout intersection with bigger roads, slip lanes, and other improvements..... but noticed that I could not upgrade. Besides not being able to upgrade, I cannot bulldoze any of the roads going to the roundabout, including the incoming highway itself. I could also not delete the roundabout itself at all.
But what happened? I can't edit anything on the roundabout with this mod because it shows a red box.....not able to edit.
So, In decided to "disable" (but not remove) the Traffic Mod..... and that worked. Well, at least, I could delete all the roads in that area, and start again......
Screenshot:
Hi. I have encountered the same issue as maarten_714. As of today, I was suddenly unable to delete any segments or even buildings in a large area near a roundabout and was only able to fix it by resetting all custom lane connections.View attachment 1128054
Just released an update with fix, it should improve validation in certain places, make sure you use the latest version (v0.1.7.2), can be checked in mod options, About section
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