Formula One regulations
The 1952 French Grand Prix was a Formula Two race held on 6 July 1952 at Rouen-Les-Essarts. It was race 4 of 8 in the 1952 World Championship of Drivers, in which each Grand Prix was run to Formula Two rules rather than the Formula One regulations normally used. Unusually this race was run over a duration of 3 hours, rather than a fixed distance.