On most of scenario, I will right close to the right as possible and let cars pass by, and move to proper lane for proper direction(left/right/straight) by shoulder checking and letting driver behind know with signals.
However, if I feel like I need to be protective (ex. Really narrow 2 lane road[one each direction] or road filled with dangerous objects like broken glasses) i will take the lane until the safe point.
For lane split, I just do not bother them for safety reason, and i will always slow down in stop sign until i have full awareness of condition.

Best thing to do is just be aware of not only the car, but the driver as well. If other driver's head isn't looking on the road, be prepared to get yourself out of the road as fast as possible.