Cotton manufacture, dyeing, printing, bleaching, brewing, type-founding, and the manufacture of tram and railway carriages are among the more important of its industries.
The water-supply is drawn from the Magdalena, and the city is provided with telephone, electric light and tram services.
Existing streets could not accommodate tram lines along with other traffic over any great distance consecutively, and in point of fact there are few, beyond the embankment line from Blackfriars Bridge to Westminster Bridge, which connects with the southern system.
The use of several decks is necessary in old pits of small section, where only a single tram can be carried on each.
Ravenna has railway communication with Bologna (via Castel Bolognese), Ferrara and Rimini, and by steam tram with Forli.
An electric tram connects the Saalburg with Homburg (distance 4 m.).