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xkcd #2932: Driving PSA
(imgs.xkcd.com)
Alt text:
This PSA brought to you by several would-be assassins who tried to wave me in front of speeding cars in the last month and who will have to try harder next time.
There are so many like this in the US. I don't understand who thought they were a good idea or why they keep getting made
I'm absolutely calling BS. I've never seen such a thing and wagering that you are just confused about what lanes can do what (or you're just making shit up). There are several roundabouts near me where an inside lane can turn out or go straight, but in all of those cases all lanes further out are required to turn out. The people that design traffic patterns aren't idiots, but there's no shortage of idiot drivers that can't follow even the simplest patterns.
If you want to insist, all you need to do is link to such an intersection in google maps so I can look at the aerial view. I'm honestly curious how they would paint the traffic lanes to indicate what you're describing.
I’ve got some near to me that both lanes can exit, but you must be in the inside lane to keep going round. They’re very strangely designed.
Even on that, a driver in the right lane must exit. If they want to continue to the left, they are required to make a lane change, in which case all lane change rules would apply.