F&C is probably the most visible specialty, partially because it is also usually the largest in size and also because the F&C staff is much more out in the open than the other specialties. Stationed strategically around the course, the white-clad Flaggers communicate with the drivers through the use of brightly colored flags and hand signals. They also communicate with the Operating Stewards via radio. F&C personnel are the first responders to any on-track incident and recommend the appropriate assistance to safely resolve the situation.
Without a doubt, Flaggers have the best overall view of the race and are located in areas where, if things do go wrong, they can respond quickly to provide a push or assist a driver to move to a safer position.