Barrie drivers

When I was learning to drive we were taught that if you miss your turn or if you are not on the correct position to make the turn then you carry on to the next road or driveway and turn around. Since when is it ok to stop in a live lane of traffic inconveniencing everyone behind you while you sit stopped waiting to change to the left hand turn lane!! It happened to me today on Big Bay Point Rd. A car in the curb lane decided it needed to make a left turn and came to a full stop they put on their left signal and waited for two lanes of traffic to clear so she could turn left. Unreal!