1.13. Other than the Starter’ s Flag the minimum Signal size is:
a. for any flag 750mm x 600mm( N. B International Regulations require the Red flag to be 800mm x 1000mm minimum)
b. Light panels FIA Homologated Grade 3 and above.
1.14. Once the Black and White chequered Signal has been displayed the Competition is over and may not be restarted.
1.15. If during any Race no Vehicle crosses the control line under its own power during a period of five minutes the end of Race Signal shall be displayed and the results announced on the relative positions of Vehicles at the time they last crossed the control line under their own power.
1.16. SIGNAL COLOURS
2. Operation of Safety Car
2.1. The Safety Car will be brought into operation to neutralise a Race upon the sole decision of the Clerk of the Course. The Safety Car will be driven by an experienced circuit Driver and will carry an observer capable of recognising all competing Vehicles and who is in permanent radio contact with Race Control Ch. 5 PART A App. 5 Art. 1.3. r
2.2. The Safety Car, yellow / amber lights illuminated, will normally join and exit the Circuit from the pit lane and the Safety Car boards will be shown initially from the Start / Finish line. If these locations are to be varied specific written instructions and verbal briefings will be issued detailing the exact locations to be used.
2.3. On the order from the Clerk of the Course, the Safety Car will join the Circuit with its flashing lights on, regardless of where the Race leader is.
2.4. At venues where light panels are operational then these signals will be simultaneously broadcast by Race Control to all marshals’ posts and may be supplemented with flags. When the order is given to deploy the Safety Car a‘ waved’ yellow Signal and“ SC” board will be displayed at the Start / Finish line. The‘ waved’ yellow Signals and“ SC” boards will be displayed simultaneously by Race Control where light panels are
Motorsport UK 2025 National Competition Rules Version 11
Chapter 12- Appendix 8- Signals by Flags and Light Panels 416