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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.〔(【引用サイトリンク】title=About FIA )〕 The "formula" in the name refers to a set of rules to which all participants and vehicles must conform. The F1 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 results of each race are combined to determine two annual championships, one for drivers and one for constructors. A red flag is shown when there has been an accident or the track conditions are poor enough to warrant the race being stopped. The flags are displayed by the marshals at various points around the circuit.〔(【引用サイトリンク】title=Flags )〕 A Global Positioning System (GPS) marshalling system was introduced in 2007. It involves a display of flag signals in the driver's cockpit, which alerts them to the accident. Following a red flag being shown, the exit of the pit lane is closed and cars must proceed to the starting grid slowly, without overtaking. 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. Previously, the race was restarted in race order from the penultimate lap before the red flag was shown. 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".〔(【引用サイトリンク】title=Suspending and resuming a race )〕 If 75 per cent of the race distance has not been completed and the race cannot be resumed, half points are awarded. No points are awarded if the race cannot be restarted and less than two laps have been completed.〔(【引用サイトリンク】title=Points )〕 Since the first World Championship Grand Prix in 1950, red flags have been shown in sixty-six races. Twenty-six were restarted on the first lap. Thirteen races were not restarted, nine because of rain and four due to accidents involving drivers. Five races were stopped due to incidents that resulted in fatalities: The 1975 Spanish Grand Prix was stopped on lap twenty-nine and not restarted after Rolf Stommelen's car crashed into a spectator area, killing five people. The 1978 Italian Grand Prix was red-flagged after a massive crash that ulitmately contributed to the death of Ronnie Peterson. The 1982 Canadian Grand Prix was halted on the first lap after Riccardo Paletti was killed when his car collided with the back of Didier Pironi's Ferrari. The 1994 San Marino Grand Prix was red-flagged on lap five following the fatal accident of Ayrton Senna, in which his car crashed into a wall at the Tamburello curve. The 2014 Japanese Grand Prix was red-flagged for a second time following a serious collision between Jules Bianchi and a recovery vehicle which would ultimately prove to be fatal. ==Red-flagged races== * The "Lap" column identifies the lap on which the race was stopped. * The "R" column indicates whether or not the race was restarted: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of red-flagged Formula One races」の詳細全文を読む スポンサード リンク
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