(a) An operator passing another vehicle:
(1) shall pass to the left of the other vehicle at a safe distance; and
(2) may not move back to the right side of the roadway until safely clear of the passed vehicle.
(b) An operator being passed by another vehicle:
(1) shall, on audible signal, move or remain to the right in favor of the passing vehicle; and
(2) may not accelerate until completely passed by the passing vehicle.
(c) Subsection (b) does not apply when passing to the right is permitted.