§ 1126. No-passing zones. (a) When official markings are in place indicating those portions of any highway where overtaking and passing or driving to the left of such markings would be especially hazardous, no driver of a vehicle proceeding along such highway shall at any time drive on the left side of such markings.

(b) The foregoing limitations shall not apply to the driver of a vehicle turning left while entering or leaving such highway.

(c) Where a two-way left turn lane or a paved and clearly traversible dividing section separates the travel lanes for traffic proceeding in opposite directions, the foregoing limitation shall not apply to the driver of a vehicle traveling within such lane or section for such distance as is required for safety in preparing to turn left leaving such highway or in completing a left turn entering such highway.