
Quoting
That Guy
What do you mean "double left hand turn"?
That should answer all your questions but I'll provide you with more reasoning as to why one if not both your violations were valid.
While you were stopped at the light, look up at the white sign with black arrows and letters and tell me what you see?
You see TWO mandatory turn arrows. Meaning the two left most lanes are dedicated left turn arrows i.e. this intersection is as you described it, is a "double left-hand turn intersection"... And since you were in the second lane from the left, that placed you in a mandatory left turn lane. And yet you went straight.