A quick-thinking passenger turned the tables on the driver, however, by capturing his antics on film.
.The driver had been "suspended pending disciplinary proceedings" by Italian bus firm Cotral, quoting regional transport chief, Francesco Lollobrigida.
Using even one mobile phone while driving is illegal in Italy.
Lazio governor Renata Polverini condemned the driver's actions as "unacceptable and reckless".
"People who are responsible for the safety of others must not behave like that," she told reporters, amid calls to have him sacked (FIRED).