São Paulo Railway Is on Track with Series 4000
São Paulo Railway Is on Track with Series 4000
2 PagesTransporT aTion radio Communications Case study New Communication Center Reduces Costs and Improves Efficiency São Paulo Railway Is on Track with Series 4000 In 2005, the railway company, Companhia Paulista de Trens Metropolitanos (CPTM), in the state of São Paulo, Brazil, decided it was time to update and improve the dispatching system they were using to control their rail lines. Their existing system comprised three separate dispatch cente
