I do think the suggestion that people are going to need to indicate while their wheel is at 180 degrees so unlikely, roundabouts are not that tight.
I thought that when this discussion first came up, and consciously checked hand position / wheel rotation at a number of roundabouts to see how much was required.
Mini-roundabouts are the obvious one, but the one that surprised me was a normal-small size (S rather than XS and not XXXL
). My lane split to provide two just at the entrance to the roundabout. I'm in right lane, turning right. But to get onto the roundabout I have to, first, turn left a bit. and in that instance the amount of RIGHT I then needed was 180, which surprised me
Dunno about others, but for that much wheel I'm doing hand-through-handle shuffle, rather than crossed-wrists, so my hands are still at, say, 9-and-3 - so I would have to be using other-hand-thumb for indicator buttons (as well as buttons other way up).
No idea if I would cope, 'coz I ain't tried it, but I was surprised that I used 180 wheel turn in "normal driving", rather than just car parking.
How about the different countries where the indicator and wiper stalks have switched sides? How often will you end up turning on the wipers instead of indicating before you re-learn where things are?
A long time ago I had a Japanese car which had wrong side stalks), and did indeed get used to it after a bit.
Then wife got a European car and every time we swapped we would be "Wipers-on" when making a turn ...
I would not, now, consciously buy a wrong-side stalks car unless it was the only car I was going to drive.