My signalling tends to be a lot more situational and depends on communicating directly with the other vehicles.

For example, when making a left turn through a line of cars that's stopped or creeping up to a red light make a left turn signal, then point directly at the car I intend to turn in front of and make a "stop" signal at them. That always works. Generally, at intersections, if there's any ambiguity I always go into my "traffic cop" routine," signalling the cars that have the right of way to proceed, and signalling to the latecomers to stop, that I'm proceeding. Do this with a smile and plenty of broad gestures and folks usually cooperate and seem amused, happy that there was no confusion or danger.

I rarely make right-turn signals, since it's my right of way whether I'm turning or going straight. In a car, a right-turn signal usually infers that the vehicle will also be slowing down quite a bit, but bikes don't usually need to impart that information; we're already going relatively slowly.

I don't think I've ever used a stop signal in my life. If I'm stopping at a traffic stop, well, it's obbious what's happening. I've I need to stop unexpectely, I get out of the road. If I'm in a row of vehicles that is stopping unexpectedly, the brake lights of the vehicles ahead of be do the job.

RichC