It was also a part of Ekitei-Shi's responsibility to reform the transportation system, which was caused by the abolition of Sukego system (tax system imposed to villages based on their amount of crop, and paid in labor; villages designated as Sukego had to provide laborers, horses and sometimes sailors to help their neighboring post-station town) in the shogunate system.
なお、幕藩体制の助郷制度の廃止による交通制度の改革も駅逓司の所管であった。