I don't know anything about this field so I can't answer that unfortunately. If I were to take a guess, I'd guess it's for (real or imagined) safety reasons? Ro

I don't know anything about this field so I can't answer that unfortunately. If I were to take a guess, I'd guess it's for (real or imagined) safety reasons? Roundabouts where you can't go around again aren't that common here though.