The winning bidder has yet to be formally selected although EMTU says CAF submitted an offer of Reais 248.7m ($US 121.7m), fending off bids from TTrans, Brazil (Reais 265.8m), Pesa, Poland (Reais 267.4m), and Alstom (Reais 269.8m).

The 15km line will cost Reais 855m to build and is due to open in 2014.

The contract is due to be signed next month, and the first vehicle will be delivered within 18 months. It would be the second largest LRV order for CAF in Brazil, following the Cuiabá contract awarded earlier this year.