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
Autodromo Enzo e Dino Ferrari at Imola was named after the nearby state) and it also hosted the 1980 edition of the Italian Grand Prix, which usually takes place in Monza. When Formula One visits Imola, it is seen as the 'home circuit' of Ferrari and masses of "tifosi" (Ferrari supporters) come out to support the local team. Imola, as it is colloquially known, is one of the few major international circuits to run in an anti-clockwise direction. (Istanbul Park, Korea International Circuit, Marina Bay Street Circuit, Autódromo José Carlos Pace, Circuit of the Americas, and the Yas Marina Circuit are other anti-clockwise circuits used