The project is the first public-private partnership in Brazil to be fully implemented, and the concession was awarded to the ViaQuatro consortium which will operate and maintain the line for 30 years. CCR Group, Brazil is the majority shareholder in ViaQuattro and holds a 58% stake. Other shareholders include Montgomery Holdings, Mitsui, RATP Development and Benito Roggio Transport. Construction began in March 2007 on the 12.8km line between Luz and Vila Sônia, which is entirely underground and has 11 stations. Six stations will be opened this year and the line is initially expected to carry around 750,000 passengers per day. Ridership is expected to reach 900,000 passengers per day when the remaining five stations open in 2014. Hyundai Rotem, Korea, is supplying a fleet of 14 six-car trains, while Siemens provided the automatic train control system, which is based on Trainguard MT communications-based train control (CBTC) technology. Siemens' contract included the line's control centre, automatic traffic supervision system, and electronic interlockings as well as passenger information, CCTV and train radio systems.
