linguistic:voice_change
Flags

Flags specifications and usage are prescribed by Appendix H of the FIA 's International Sporting Code.

The format of the race has changed little through Formula One's history. The main changes have revolved around what is allowed at pit stops. In the early days of Grand Prix racing, a driver would be allowed to continue a race in their teammate's car should theirs develop a problem – in the modern era, cars are so carefully fitted to drivers that this has become impossible. In recent years, the emphasis has been on changing refuelling and tyre change regulations.

Since the 2010 season, refuelling – which was reintroduced in 1994 – has not been allowed, to encourage less tactical racing following safety concerns. The rule requiring both compounds of tyre to be used during the race was introduced in 2007, again to encourage racing on the track. The safety car is another relatively recent innovation that reduced the need to deploy the red flag, allowing races to be completed on time for a growing international live television audience.