(1) overtaken vehicle fails to move off of the main traveled portion of highway into an area sufficient for safe turnout when:

(3) statute doesn't apply when:

(a) turning left into/from alley, intersection, private road or driveway.

(b) an obstruction/condition exists necessitating driving to left of roadway center as long as driver yields to all vehicles within a distance constituting an immediate hazard & traveling in proper direction on unobstructed portion of roadway