What you are given
Every one of Berlin's 211 zones arrives with derived numbers attached: resident population from OSM land-use shares of a sourced 2020 metro series, jobs allocated from the land-use mix, and a gravity-model home-to-work matrix. These are not US Census tracts and not LODES commute pairs — the pack says so on its provenance string.
Work trips are a gravity model from those land-use shares, labelled DERIVED, not a census commuting matrix. The streets, water and operating lines are still observed: OpenStreetMap and the agency's published GTFS.
Berlin's operating rail — 173 lines, 4509 stops — is seeded into the playable network from the agency's published GTFS: the lines run, they cost money to operate, and riders board them. Local bus stays decoration.