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Medellin, Antioquia, Colombia - SISTRAC SA / cable systems and rail transport airborne (Handout presentation) -5 April 2010: ... A Colombian company intends to major cities a new transport system: a network of systems aéreosuspendidos lighter, efficient and economical ... When you think of great solutions to big problems of pollution and traffic congestion in major cities, Metro chooses systems since they have high capacity for mobilization of passengers (from 40,000 users per hour) and costs vary between 50 and 350 million dollars per kilometer, depending on complexity ... But, according to experts Antioquia, analyzing the "fine print" we find the following problems: The Mets, for their high capacity, do not have the most potential passengers near their stations. hard to give users the bus that goes through your door or your private car to walk more than two hundred yards from su sitio de origen para abordar los trenes en las estaciones del Metro , o desde estas hasta su destino final. Por eso, tienen que implementarse, adicionalmente, al sistema Metro , otros sistemas de recolección o acopio para la mayoría de los usuarios que no están cerca de las estaciones, los que tienen que ser llevados a ellas para abordar el metro subterráneo y luego ser transportados desde su estación de destino hasta el sitio de su destino final. Estos procesos de acopio y reparto deben realizarse por medio de otros sistemas de transporte secundarios, los Sistemas Integrados o alimentadores. Lo anterior, quiere decir, que un sistema Metro de alta capacidad is not functional alone, because you have to tansport users with other systems. As a result, the Meters really cost much more than what is invested in them, because we must also take into account how high the cost, environmental, construction, acquisition, installation, operation, maintenance, accident and replacement of feeder systems.