Rules
Chapter 06 - Flagging & Starting Protocols - 1 - 2 - 3 - 4 - 5

Red Flag - con't: If a red flag is thrown and less than half of the race laps have been completed by the leader, the race will be restarted and the REMAINING laps will be run. The restart grid positions will be determined by the race position order at the time the red flag was thrown.

Black Flag: Informs a racer of a safety violation. The flagged racer must immediately pull off the track if the racer has a mechanical problem or to pit lane if it is feasible without causing a hazardous condition for other racers. The racer must wait trackside or in the pits until the racer director is able to address the situation.
Chapter 06