However, from the early ritsuryo system, some cases of new kokushi (local governors) using tenma as a transportation means to their new posts began to appear, leading to the exclusive use of the tenma system by new kokushi going to their new posts by the early Heian period.
しかし、律令制初期から、新任国司の赴任交通手段として伝馬を利用する事例が見られ始めると、平安時代初期までに、伝馬制は新任国司赴任のための専用制度になった。