The Enrique Peñalosa was elected mayor he cancelled the project and oversaw the construction of the initial TransMilenio system at a fraction of the cost.
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Inspired by Curitiba's Rede Integrada de Transporte (Integrated Transportation Network), TransMilenio consists of several interconnecting BRT lines, each composed of numerous elevated stations in the center of a main avenue, or "troncal".
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Cards use a contactless smart card (MIFARE) system, and multiple trips may be purchased for one card.