The yellow flag, also known as the caution ... them to give their all in pursuit of victory. The checkered flag, featuring alternating black and white squares, is the most iconic flag in NASCAR.

Everyone knows all about the green, white, yellow and checkered flags in NASCAR ... the Pocono 400 for Bubba Wallace. The flag in question is a black flag with a white ‘X.’ ...

A yellow flag is used to signal a caution period ... the white flag doesn't invoke a caution period. The iconic black-and-white checkered flag signals the end of the race. Once waved, all drivers ...