noun
railway police officer (pre-1987)
Historical term for a railway police officer in Japan before the 1987 privatization of Japanese National Railways. Now replaced by terms like 鉄道警察官.
See also: 鉄道公安官
鉄道公安職員は国鉄時代に駅や列車内の治安を守っていた。
Railway police officers maintained security in stations and on trains during the JNR era.
Compound of 鉄道 (railway) + 公安 (public safety) + 職員 (staff member). The term became historical after the dissolution of Japanese National Railways in 1987.