Earlier quoted context omitted.
I took a bike safety class that was supposedly taught by professionals and supposedly based on local vehicle legislation (in California) and they taught us to make vehicular left turns, by positioning ourselves in the rightmost traffic lane which is allowed to turn left, and indicating our intentions to make a left turn with our hands. I've subsequently done this several hundred times in various kinds of traffic. Did…
> Did they make a mistake? For California, I don't know. For western European: Oh my god YES! By all mean signal which way you're going to turn, but in intersection, especially those with multiple lanes, you never make a left turn. Drivers will not expect you in the middle of the intersection.
You are over generalising. I don't know where you are but where I am in western europe cyclist absolutely cross intersections like a vehicle.
The trick is to take control of the lane. If you are sticking to the side cars won't see you. If you take up space in front of them they will see you and include you in their calculations.
And before you or someone else jumps here to spread some fud: No i am not advocating jumping in front of cars with zero warning. Or whatever silly idea you have based on what I just wrote. I see this done all the time, and I do it fairly regularly.
You have to be seen. You have to be predictable. You have to know where you are heading.