Auto Racing

What does the red flag mean in NASCAR?

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In 1998 who won NASCAR Rookie of the Year honors?
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Which driver was ranked #1 on Forbes.com's list of Most Influential Athletes for 2011 and 2012?
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What Sirius Satellite Radio station covers NASCAR?
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What country is driver Daniel Abt from?
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What month is the Daytona 500 held annually at Daytona International Speedway?
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What does a black flag signal in NASCAR?
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