Taxis are plentiful in Rio, and in most parts of the city you can easily flag one down on the street. Yellow taxis have meters that start at a set price and have two rates. The "1" rate applies to fares before 8 pm, and the "2" rate applies to fares after 8 pm, on Sunday, on holidays, throughout December, in the neighborhoods of São Conrado and Barra da Tijuca, and when climbing steep hills, such as those in Santa Teresa. Drivers are required to post a chart noting the current fares on the inside of the left rear window. CentralTaxi has a fare calculator on its website that will give you a general idea of what the fare from one destination to another might be.
Radio taxis and several companies that routinely serve hotels (and whose drivers often speak English) are also options. They charge 30% more than other taxis but are reliable and usually air-conditioned. Other cabs working with the hotels also charge more, normally a fixed fee that you should agree on before you leave. Reliable radio-cab companies include Coopacarioca and Coopatur.
Most carioca cabbies are pleasant, but there are exceptions. If flagging down a taxi on the street, check to see that an official phone number is displayed on the side and that the driver's official identity card is displayed. Remain alert and trust your instincts. Unless you've negotiated a flat fee with the driver, be sure the meter is turned on. Few cab drivers speak English, so it's a good idea to have your destination written down to show the driver, in case there's a communication gap.
CentralTaxi (Rio de Janeiro. 021/2195–1000. www.centraltaxi.com.br.)
Coopacarioca (Rio de Janeiro. 021/2518–3857 or 021/2158–1818. www.cooparioca.com.br.)
Coopatur (Rio de Janeiro. 021/3885–1000.)