Laws vary widely of course, but for example, in my state, cyclists have a right to all roads except limited access highways. They are meant to keep as far to t

Laws vary widely of course, but for example, in my state, cyclists have a right to all roads except limited access highways. They are meant to keep as far to the right as is safe, so for example, to execute a left turn you enter the middle of the lane and follow the same path a car would. Or another example, if there is a parked car blocking the right side of the street, the cyclist can take the center of the lane to go around the parked car.