Circuit de Monaco downhill again to a double right-hander called "Portier," named after region of Monaco, before heading into the famous tunnel, a unique feature of a Formula One circuit. (Until 2009 only one other circuit, Detroit in 1982–88, featured a tunnel, but the F1 series now includes racing at the Yas Marina Circuit in Abu Dhabi, which presents a shorter tunnel at the exit of the pit lane.) As well as the change of light making visibility poor, a car can lose 20–30% of its downforce due to the unique aerodynamic properties of the tunnel. The tunnel also presents a unique problem
Shah Alam Circuit Shah Alam Circuit Shah Alam Circuit or Batu Tiga Speedway Circuit was a racing circuit in Malaysia. The circuit was located in the capital of Selangor in Shah Alam, between the Shah Alam Stadium and Federal Highway. The circuit layout was designed by Dutchman John Hugenholtz. The circuit was opened in 1968 with the first Grand Prix won by Indonesian Hengkie Iriawan. It became a venue for the Malaysian Grand Prix from 1968 until 1982, whereby the starting field consisted alternately of vehicles from the Formula Atlantic, Formula Pacific or Formula 2. The last Malaysian Grand Prix race held in