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 Paul Ricard circuit in 1983, 1988, 1989 and 1990. The circuit hosted the Formula One French Grand Prix on many occasions, the first of which was the 1971 French Grand Prix. The circuit was also extensively used for testing, especially in Formula One. In 1986, Brabham Formula One driver Elio de Angelis was killed in a testing accident at the fast first turn after the rear wing of his Brabham BT55 had broken off. Although the circuit was not the cause of the crash, it was modified in order to make it safer. The length of the Mistral Straight was reduced from