Aaagh! Never ride against traffic! Just say no!! (sorry, get a bit hyper about that)
Some bike lanes are pretty spooky, since a lot of drivers see them as a handy, large space for them to pull over into, or veer into before making a turn. But it helps if you just assume that all drivers ahead of you are about to make a turn at the next intersection, and ride correspondingly. You can also never be too visible, bright clothes, lights, whatever. And if I feel I get more attention if I ride "purposefully" - I turn my head and check behind me a lot, try to catch the drivers eye, place myself a bit closer to the line of cars than the sidewalk, and use obvious LARGE hand signals well in advance.
A friend saw me and joked that I looked like a bike cop - fine with me![]()