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

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.