There are 4 main forms of Public Transport in Rome, namely: Bus, Metro, Tram & Train. This article tells you everything you need to know about using the bus in Rome.
You may also be interested in our complete Guide to Travel Around Rome which also deals with how to arrive into Rome.
Rome’s Bus Company – ATAC
The public transport system in Rome is run by a company called ATAC which is notorious for its regular transport strikes (sciopero), overcrowded buses, ticket inspectors that target tourists despite the fact that virtually no-one else pays, and corruption.