CHAPTER 12 RACE Appendix 13- Competitors Vehicles Technical Regulations
This Appendix must be read in conjunction with the relevant provisions of Chapters 7 and 8 any Formulae Regulations and Official Documents.
1. All Vehicles competing in races must:
1.1. Have a bulkhead between any fuel tank and filler and the Driver / Passenger compartment sufficient to prevent the passage of flame or liquid. Where a fuel tank constitutes part of the bulkhead between the passenger and luggage compartments an additional bulkhead must be fitted. Additional fuel tank protection may be required for open or single seater cars( see Chapter 7 App. 4). Vehicles of periods A to F are exempt from this requirement.
1.2. Not have any skirts or intermediary devices bridging the gap between the underside of the chassis / body of the Vehicle and the road / Track. Ground clearance to be as per definition 40mm minimum unless stated otherwise in the Official Documents.
1.3. Have substantial towing eyes securely fixed to the main structure of the Vehicle front and rear within the confines of the body to enable the Vehicle to be moved. Vehicles of periods A to F and single seater racing Vehicles are exempt from this requirement subject to a suitable towing point being clearly identified. Towing eyes must have a minimum internal diameter of 60mm. Towing eyes / towing points should be painted a contrasting bright colour( dayglo red, orange or yellow) marked with an arrow and the word“ tow”.
1.4. The following configuration and specifications are strongly recommended:
a.
b.
c.
d.
e.
Vehicles to be equipped with two front and two rear towing eyes positioned equally either side of the longitudinal centre line.
The towing eyes to be made of steel wire rope of at least 6mm diameter with a 6x19 wire core. Each towing eye to have a breaking-strain of at least 2 tons and allow the passage of a cylinder with a diameter of 60mm.
The towing eye to be fixed to a structural part of the chassis with a minimum of M10( Grade 8.8) fixings or looped around a structural chassis part the inner part must be flexible in order for the towing eye to be retracted inside the bodywork profile.
Towing eyes should be situated 25mm forward of the adjacent bodywork with clearance of 100mm above and below to enable recovery crews to attach straps and shackles.
A“ pull-cord” to be attached to the towing eye to enable the marshals to access it. The end attached to the chassis may be either‘ thimble’ or‘ open-loop’ style.
1.5. Have substantial underbody protection covering any area of fuel tank if exposed to running damage.( Applicable mainly to tanks of plastic construction.)
2. Body( including Aerodynamics) 2.1. Have any windscreen if of glass of laminated type only.
2.2. Rear screens to be clear or may be tinted such as not to significantly affect through vision( in or out) or distort the colours of Signals, flags or lights.
2.3. If advertising is allowed on the windscreen not have the advertising obscuring the Driver’ s vision. Advertising on other transparent surfaces is prohibited unless specified in the Official Documents.
2.4. The Driver’ s name may be displayed on the rear side and / or the rear screen in letters not exceeding 100mm high.
2.5. Have any cover over the Passenger’ s compartment alongside the Driver composed of foldable material or if of a rigid material the edge adjacent to the Driver to have a minimum vertical dimension of 40mm.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 12 Appendix 13- Competitors Vehicles Technical Regulations 427