JR and its predecessor the Japanese National Railways had a rule in that when a new station was built and the place name of the new station was going to overlap with the existing place name, a name of an old provincial name to be prefixed to the name of the station that came later.
JRとその前身である日本国有鉄道は、同じ地名が重複しそうな時には、後から置かれた駅名に旧国名を頭に付けることを原則とする。