GT Challenge Rule Book GT Challenge Rule Book - Page 17

9.5 - Blue Flag (blue with diagonal yellow stripe). Indicates faster cars are approaching. This flag is informational only. In all cases, it is the responsibility of the faster car to safely overtake the slower car. It is the responsibility of the slower car to maintain a consistent line. It is strongly recommended that a slower car being lapped makes every reasonable effort to facilitate a safe pass.

9.6 - Black Flag. When displayed furled, indicates a warning from Race Control and may require action, such as slowing on course, to avoid an in-session penalty. Black flags will be given out by iRacing and by Stewards. Failure to abide by the black flag will result in removal from the server.

9.7 - Yellow Flag. When displayed locally, it indicates a hazard ahead, possibly a car spun or stopped on or off the racing surface. Drivers should use care and be extra vigilant until the local yellow is gone.

9.7.A - Full Course Caution. A full course caution may be deployed by the Stewards in the event of a significant incident obstructing the track or impacting a significant number of cars. We use a “virtual pace car” process, not the iRacing full-course yellow process. The Race Steward will announce “Full Course Yellow” to start the process. No further passing is allowed once “Full Course Yellow” is announced. The overall race leader will be used as the “virtual pace car” and that driver should safely and gradually slow to pace car speed as directed by the Race Steward. All other drivers should follow the Race Steward’s instructions upon the deployment of a full course caution. Please avoid excessive radio chatter during full course cautions so the Stewards can concentrate on sorting and issuing instructions. All drivers except the race leader should continue to drive at approximately 80% race pace to catch up to the race leader – use your F3 screen to avoid smashing into the field behind the race leader.