I cautiously head to the front of the line, where everyone can see me and judge how fast I am traveling as I proceed through the turn. Typically, I act as a crossing guard here, too, directing the cars to pass me, assuring them that I can see them and will not make any dangerous, unexpected moves.
I absolutely HATE when motorcyclists do this, but they are typically traveling at the same speed as automobiles, so there's no good reason.