Signifies the end of the practice session, qualification attempt or race. The race leader is declared the winner. A lapping car is attempting to pass.
Driver is instructed to give lapping driver consideration.
Directs a driver to proceed to the pits on the next lap and follow the instructions of the officials. Officials have ceased scoring the car until further notice. During practice or a race, drivers must reduce speed immediately, maintain position and yield to track safety vehicles until the green flag is displayed. During a qualification session, a qualification attempt is halted.