4.2. The paddock area, spectator walkways, car parks, offices etc., shall all to be lit to ensure safety.
4.3. The Track itself shall be identified by reflectors placed at both Track edges at intervals of 5m from the 60m point before all corners until 60m past the end of the corner.
4.4. Corner warning boards shall carry reflecting markings.
4.5. All Ambulances, break-down vehicles and Official cars shall be identified with a reflective strip at the rear and a blue or yellow flashing beacon.
4.6. All Flag Marshals shall have two yellow Signal lights( one as standby) incorporating a control giving steady or interrupted lighting.
4.7. The Clerk of the Course shall have a red Signal light available. 4.8. Each Observer shall have two hand lamps, unless at a point with permanent lighting. 4.9. Scrutineers and Timekeepers shall have sufficient lighting to carry out their duties.
4.10. Competing Vehicles shall have front and rear lighting, brake lights, and direction indicator lights in working order.
4.11. Reflective identification numbers must be displayed in three places: on the forward and each side of the Vehicles. The side numbers must be adequately illuminated and displayed on a flat vertical surface. Practice / Qualifying Practice
4.12. Should the Event include a period at night each Driver must be required to Practice both in respect of the daylight period and the night-time period of Practice. In addition to daylight Practice at least one half-hour of Practice must be at night.
4.13.‘ Night’ is deemed to have occurred 30 minutes after sunset.
5. Bad Weather Racing
5.1. Rain: No specific requirement is specified regarding Track drainage, but when a Track is resurfaced whether wholly or partially sufficient camber should be incorporated to provide for water to run off.
5.2. Any significant accumulation of or standing water on the Track surface will make the cancellation of racing probable.
5.3. Fog: When visibility is obscured between any two adjacent Flag Marshal Posts, Racing or Practice must be stopped and abandoned if there is no reasonable prospect of conditions improving within two hours.
5.4. Snow and Ice: The following areas must be free of all snow and ice before racing can commence:
a. The Track including verges either up to the safety bank or for a width of 3m whichever is the lesser. b. The Paddock, the Pits and communication roads. 5.5. Where Course verges are cleared any snow must not be piled into banks.
5.6. When a Track is snow or icebound an inspection must be made 24 hours before the start of official Practice to decide whether the Event will be cancelled or postponed.
5.7. If an adverse decision is taken the ASN and the ASN Steward and the Competitors and the media must be notified.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 10 Appendix 6- Regulations for Endurance and Night and Bad Weather Racing
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