However, those routes were set up for one bus operation each at that time (only a one-way bus to Uchizato Minami for 73A) to maintain their operator's license until obtaining the route license for the Uchizato - Nishi Iwata section.
但しこの時点では両方とも1本ずつ（73Aは片道の内里南行きのみ）であった為内里～西岩田間の路線免許取得の為の免許維持路線としての開設であった。