If a race is unable to be resumed, 'the results will be taken at the end of the penultimate lap before the lap during which the signal to suspend the race was given'. Previously, the race was restarted in race order from the penultimate lap before the red flag was shown. From 2005, a ten-minute warning is given before the race is resumed behind the safety car, which leads the field for a lap before it returns to the pit lane. Following a red flag being shown, the exit of the pit lane is closed and cars must proceed to the pit lane slowly without overtaking, lining up at the pit exit. It involves a display of flag signals in the driver's cockpit, which alerts them to the crash. A Global Positioning System (GPS) marshalling system was introduced in 2007. The flags are displayed by the marshals at various points around the circuit. Ī red flag is shown when there has been a crash or the track conditions are poor enough to warrant the race being stopped.

The results of each race are combined to determine two annual championships, one for drivers and one for constructors. The Formula One World Championship season consists of a series of races, known as Grands Prix, usually held on purpose-built circuits, and in a few cases on closed city streets. The 'formula' in the name refers to a set of rules to which all participants and vehicles must conform. Formula One, abbreviated to F1, is the highest class of open-wheeled auto racing defined by the Fédération Internationale de l'Automobile (FIA), motorsport's world governing body.

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