(1) operating a vehicle on a two-way roadway having four or more lanes for moving traffic & driving to the left of the center line

(2) allowed to drive to the left of the center line under the following:

(a) when authorized by a traffic control device designating certain lanes to the left of the center for use by traffic.

(b) when an obstruction/condition exists making it necessary to drive to the left of the center, provided the right of way is yielded to all vehicles traveling in the proper direction on the unobstructed portion of the roadway within a distance constituting an immediate hazard.

(c) when making a left turn at an intersection, alley or private road or driveway.