Italy has the best public transportation in Southern Europe. High-speed trains connect major cities in 1-3 hours. Regional trains reach small towns for €5-15. Ferries connect islands and coastal towns. City buses, trams, and metros handle urban travel. You do NOT need a car to see Italy — in fact, a car in Italian cities is a liability (ZTL fines, impossible parking, stress). The car is only essential for: Val d'Orcia, rural Puglia, inland Sicily, and the Amalfi Coast (if you're brave). Everything else: trains.
Plan my route →Frecciarossa/Frecciargento (Trenitalia) — high-speed, 300km/h. Rome→Milan 2h55, Rome→Florence 1h30, Rome→Naples 1h10, Milan→Venice 2h15. Book 60+ days ahead: €19-30. Day-before: €60-90. Book on Trainline →
Italo — private competitor to Trenitalia. Same routes, same speed, sometimes cheaper. Check both Trenitalia and Italo before booking. Trainline compares both →
Regionale — slow trains connecting every town. No reservation needed. Buy at station (validate in yellow machine!) or on Trenitalia app. €3-15 per trip. Full train guide →
FlixBus — intercity coaches, very cheap (€5-15), slower than trains, useful for routes trains don't cover. SITA — regional buses, especially Amalfi Coast and Tuscany. Marino — southern Italy specialist (Puglia, Calabria, Basilicata).
Naples hub: Ferries to Capri (€22, 50 min), Ischia (€13, 60 min), Procida (€15, 40 min). SNAV, Caremar, NLG. Sicily: Train ferry from Villa San Giovanni (included in ticket — the train boards a FERRY). Sardinia: Tirrenia/Moby from Civitavecchia, Genova, Livorno (6-12h, from €35). Cinque Terre: Boat between all 5 villages (€25 day pass).
Rome: Metro (2 lines useful for tourists: A + B), buses (useful but confusing), tram (8 line to Trastevere). €1.50/100 min or €7/day. Milan: Excellent metro (5 lines). €2.20/ride or €7.60/day. Naples: Metro Line 1 (stations are art installations — Toledo station is the most beautiful metro station in Europe). €1.30/ride. Venice: Vaporetto (water bus). €9.50/single or €25/day pass — the day pass is ALWAYS the better deal if you ride 3+ times.