Taxis are required by law to have a meter -- make sure your driver turns it on. The minimum charge is 3,000 pesos, plus 50 pesos per 80 meters (260 feet). Fares increase by about a third after dark. It is always safer to call a taxi, especially in the northern parts of Bogotá, where thieves masquerading as taxi drivers have robbed passengers they picked up on the street. The taxi companies will tell you the number of the taxi, and when you are picked up the taxi driver will ask you for the last two digits of the phone number from which you called.