Categories such as Formula Three and GP2 are described as feeder formulæ, which refers to their position below Formula One on the career ladder of single seater motor racing. There are two primary forms of racing formula: the open formula that allows a choice of chassis and/or engines; and the control or "spec" formula that relies on a single supplier for chassis and engines. Formula Three is an example of an open formula, while Formula BMW is a control formula. There are also some exceptions on these two forms like Formula Fordwhere there is an open chassis formula but a restricted single brand engine formula.
Formula One
Main article: History of Formula One
In the process of reviving Grand Prix racing after the end of World War II, the Fédération Internationale de l 'Automobile 's Commission Sportive Internationale was responsible for defining the standardised regulations of Formula One in 1946. The first race to be run to the early Formula One regulations was a non-championship Grand prix at Turin in September 1946. The first officially recognised Drivers ' World Championshipwas held in 1947 and the Formula One World Championship was inaugurated in 1950. This was the first example of formula racing.
A typical F3 chassis from the late 1960s
[edit]Formula Two
The Formula Two regulations were first defined in 1947 as a form of B-class below Formula One.[1]It was not unusual for some Formula One events to include a number of F2 entries in the same field and