Where does “polisi khusus kereta api” come from?

polisi khusus kereta api (Indonesian) comes from Indonesian polisi, from Dutch politie, from Middle Dutch policie, from Middle French policie, from Late Latin politia, from Latin polītīa, from Ancient Greek πολιτεία, from Ancient Greek πολῑ́της — Creates verbal adjectives from verb stems.

polisi khusus kereta api (Indonesian): railroad police, railway police (people responsible for protecting railroad (or railway) properties, facilities, revenue, equipment (train cars and locomotives), and personnel, as well as carrying passengers and cargo)