[MENTION=21724]cyccommute[/MENTION], thanks for the link; I have one left turn signal on my ride to work in the early a.m., and I've never been able to trip the sensor; I'll give these a try.

Also, can someone please clarify something for me? When you filter up to the first car in line, do you make an effort to get the driver's attention? It's probably just me, but even when they're aimed away from me, I don't trust drivers, and try not to assume what they're going to do.

I don't make many lighted left turns, but when I do I try to sit behind the last vehicle in line; usually the next car slides up next to me, and less often they'll wait behind me. I am slow, so I try not to take the lane in that instance; so far, so good.