Outline of public transport
The following outline is provided as an overview of and topical guide to public transport: Public transport – transport of passengers by group travel systems available for use by the general public, typically managed on a schedule, operated on established routes, and that charge a posted fee for each trip. Public transport modes include city buses, trolleybuses, trams (or light rail) and passenger trains, rapid transit (metro/subway/underground, etc.) and ferries.
Source: Wikipedia — Outline of public transport (CC BY-SA 4.0)