New race flag for NASCAR segments?

Here's how [the NASCAR race segments] will work:

When approximately 25 percent of the race laps laps are complete (teams will be told in advance the exact distance), stage one will end. NASCAR is likely to signal this with a newly designed – and as yet not revealed – flag color and design. Points ranging from 10 to 1 will be awarded to the top drivers.

They then can pit. Laps between stages will count toward the total distance. Restart positions will be based on the order drivers leave the pits. The process will be repeated halfway through the race, about lap 150. The third stage will go to the finish with overall race points scored. The green-white-checker "overtime" rule still applies. Arizona Republic