i.
If the Red Signal is displayed then the Driver must immediately cease driving at competitive speed and proceed slowly to the Pits / Paddock / Start Line as directed by Marshals and at all times be prepared to stop and must stop if the Track is blocked.
7.2. In Sprints at Race Circuits other Signals may be used provided their use is clearly defined in the Official Documents.
Motorsport UK National Competition Rules 2026 Edition 1
Chapter 14 Appendix 1- Organisers Regulations Including Scrutineering 532