Description:
Whilst the game is still using right angles it would make sense to implement a 2 and 4 point roundabouts as an attachment to a roadway in order to allow traffic to u turn more effectively.
Why it should be implemented:
Currently buses either u turn in the middle of the the road or go to the end of the road and then u turn, this would seem unrealistic when a 2 or 4 point roundabout would allow for u turns or larger left or right turns.