Signs regulating on-premises traffic, parking or other functional areas, such as lavatory facilities, telephone, signs denoting other sections of a building such as lubrication, office, etc., when less than five square feet in area and bearing no commercial advertising whatsoever. Such signs shall be limited to the words "entrance," "in," "exit," "out," "parking," and may also have arrows or other appropriate directional indicators.
(1) For high-type mountings, such sign shall be not less than eight feet or more than 10 feet from the ground.
(2) The total height of the sign shall not be more than three feet from ground grade for a low-type mounting when required for sight distance situations.