Most motorists turning right are aware of me and wait for me. I always give them a friendly wave. Be sure to practice your wave. When I first started this practice I think my wave was too much of a "quick jerk" and looked more like I was shaking my fist...
I rode 66 miles on Saturday, all urban and mostly in the West Hills. Only one inattentive or rude driver all day, someone backing out of their driveway. She looked both ways, but not closely enough to see me. Regardless, I consider that pretty damn good out of about 1000 potential vehicle interactions over the course of the ride, and in hearty SUV territory at that.