In North American auto racing, a green–white–checker finish (GWC) is a racing restart procedure one in which the race is restarted from a caution period with 2 laps remaining. When the race distance is extended to accommodate such a finish, it is also sometimes known as an overtime finish. The name alludes to three racing flags: * green flag: shown to start or restart the race. * white flag: shown at the start of the last lap * checkered flag: shown at the finish of the race The prescribed number of final laps is usually two. If a caution flag is shown within the specified number of laps of the scheduled finish, then the number of remaining laps will not be decremented until the green flag is shown again. The exact provisions vary between organizations. For some years after 2007, NASCAR on Fox referred to the extra laps after the scheduled number as Overdrive, an allusion to the term overtime used in many other sports. NASCAR officially adopted the term "NASCAR overtime" in 2016. (en)
La green-white-checkered finish è una regola adottata nei campionati automobilistici NASCAR a partire dal 2004. Essa prevede che, qualora ci sia la possibilità che una corsa possa finire sotto pace car, essa venga allungata per permettere la sua conclusione in regime di gara libera. (it)