The driver of a vehicle intending to turn at an intersection shall do as follows:
(A) Right turns. Both the approach for a right turn and the execution of a right turn shall be made as close as practicable to the right-hand curb or edge of the roadway;
(B) Left turns on two-way roadways. At any intersection where traffic is permitted to move in both directions on each roadway entering the intersection, the approach for a left turn shall be made in that portion of the right half of the street nearest the center thereof by passing to the right of the center line where it enters the intersection. After entering the intersection, the left turn shall be made so as to leave the intersection to the right of the center of the roadway being entered. Whenever practicable, the left turn shall be made in that portion of the intersection to the left of the center of the intersection;
(C) Left turns, on other than two-way roadways. At any intersection where traffic is restricted to one direction on one or more of the roadways the driver of a vehicle intending to turn left at any such intersection shall approach the intersection in the extreme left-hand lane lawfully available to traffic moving in the direction of travel of the vehicle. After entering the intersection, the left turn shall be made so as to leave the intersection, as nearly as practicable, in the left-hand lane lawfully available to traffic moving in such direction upon roadway being entered.
(47 O.S. § 11-601) (`83 Code, § 15-905) Penalty, see § 71.999