Formula One World Drivers' Championship was not formalised until 1947. The first world championship race was held at Silverstone, United Kingdom in 1950. A championship for constructors followed in 1958. National championships existed in South Africa and the UK in the 1960s and 1970s. Non-championship Formula One events were held for many years, but due to the increasing cost of competition, the last of these occurred in 1983. On 26 November 2017, Formula One unveiled its new logo, following the 2017 season finale in Abu Dhabi during the Abu Dhabi Grand Prix at Yas Marina Circuit. The new logo replaced F1's iconic
Circuit of the Americas of Silverstone's Maggotts-Becketts-Chapel sequence, Hockenheim's arena bends, and a replica of Istanbul's Turn Eight. Other corners were loosely inspired by the Senna 'S' at Interlagos and the Österreichring's Sebring-Auspuffkurve. A feature of the circuit is a deliberate widening of corners, to encourage drivers to follow multiple racing lines. A similar feature was used at the Buddh International Circuit in India, where the circuit widens on the approach to certain corners. The circuit was one of only a handful on the Formula One 2012 calendar to be run counter-clockwise, the others being Marina Bay, the Korea International Circuit, Yas Marina, and