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By Ben Tavener, Senior Contributing Reporter

RIO DE JANEIRO, BRAZIL – The construction cost for Rio’s new Metro (Subway) Line 4, will amount to R$8.5 billion (US$4 billion), seventy percent more than the R$5 billion (US$2.4 billion) first estimated, it has been announced. The Line 4 connecting Ipanema to Barra da Tijuca will now cost more than the four new BRT (Rapid Bus Transit) lines, which cost . . .

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