This document discusses various modes of public transportation. It describes buses, trains, metros/subways, trams, ferries, and airlines as common forms of public transit that can be used for travel within and between cities. High-speed rail networks are also mentioned as an emerging transportation option. Key benefits of public transportation are highlighted as being more affordable and environmentally friendly than private options, while also avoiding traffic congestion. Reliable public transit is presented as a convenient way to travel for both short and long distance trips.