Ontario Highway Traffic Act

Thanks.
For what it's worth, since you're on a one-way street (i.e. there's no oncoming traffic) you wouldn't be blocking traffic for people behind you tryihng to go straight.

I specifically remember in Driver's Ed that we were told to drive in the middle lane (except obvious exceptions like getting ready exit, etc), since it's the "safest", in that if there is an obstacle, you have 2 potential escape routes, as opposed to one.

Assuming we weren't speeding and not breaking any other laws other than 154b, and we somehow ...

Say you are in the middle lane of a 3 lane, one-way street, approaching a 4 lane, 2 way intersection (2 lanes in each direction).
The left lane is marked as turning lane. The middle lane (yours) has no markings or signs indicating what lanes you can or can't turn into. The far right lane has no markings either.
The intersection you are turning left ...