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» Advice on cabs in Rome: a taxi from inside the Aurelian walls to Ciampino Airport for max 4 people with baggage costs exactly 30 euro,  whereas to Fiumicino Leonardo Da Vinci Airport the price is 48 euro.
Roman taxi drivers are infamous, and even when they're not trying to rob tourists, they're very very expensive! Taxis from Ciampino Airport into the centre cost a fixed price of 30 Euro, by law. Taxis from Fiumicino Airport cost a fixed price of 48 Euro, by law. If using cabs in the city, it's cheaper to hail on in the street than to call one, as call outs start the meter running when they receive the call. If dropping people off, make sure the driver doesn't keep restarting the meter as if it were a new fare. There's also a cartel in Rome that stops new drivers getting licences, thus keeping the existing taxi drivers in full and profitable employment.