| abstract
| - The Lucky dog, also known as the Free Pass, is a NASCAR beneficiary rule. The rule allows the driver of the next lapped car or truck behind the leader to gain back a lap during a caution. The driver is called to move to the end of the longest line of the cars at the end of that caution period. This rule was instituted to prevent drivers from racing back to the start/finish line when a caution was called. The rule applies regardless of the number of laps a car is behind the leader. Furthermore, a driver may not receive a beneficiary rule lap in certain situations:
* The driver is involved in the caution situation.
* The driver is penalized one (or more) laps for a racing-related violation (aggressive driving). This rule may be waived if the driver passes the leader and regains his lap back, and then is passed back.
* The driver commits certain pit violations.
* The driver may only make one fuel stop during the caution, and that is when the lap-down cars are on pitting. The driver with the beneficiary lap must pit with these cars.
* The driver pits with the lead lap cars, unless officials declare this a quick caution, when all cars may pit. In 2006, NASCAR began to use this rule at road course races, despite previous years where it was not used at road course events.
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