TransMilenio in Bogotá: Case-study of PPP in BRT August 1, 2011 | Features Bogotá, the capital of Colombia, is served by the bus rapid transit (BRT) system, TransMilenio. Operationalised in December 2000, the system currently comprises 9 lines spanning over 84 km. The succes... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password