H2 – Cars of which the latest major component is of a specification valid between 1 Jan 1972 and 31 Dec 1976. Period Defined Vehicles( Rally). A Vehicle will be dated by the specification presented and not necessarily by the date of build or registration.
Historic Category 1 – Cars of a specification valid before 1 Jan 1968 that comply with Chapter 13 App. 15 Art. 9.2. a or Chapter 13 App. 17 Art. 2.3. a. i.
Historic Category 2 – Cars of a specification valid between 1 Jan 1968 and 31 Dec 1974 that comply with Chapter 13 App. 15 Art. 9.2. b or Chapter 13 App. 17 Art. 2.3. a. ii.
Historic Category 3 – Cars homologated in Groups 1, 2, 3 or 4 between 1 Jan 1975 and 31 Dec 1981 that comply with Chapter 13 App. 15 Art. 9.2. c or Chapter 13 App. 17 Art. 2.3. a. iii.
Historic Category 4a – Cars homologated in Groups A, N and B between 1 Jan 1982 and 31 Dec 1985 excluding any cars that were regulated out by the FIA that comply with Ch. 13 App. 15 Art. 9.2. d or Ch. 13 App. 17 Art. 2.3. a. iv and v.
Historic Category 4b – Cars homologated in Groups A, N and B between 1 Jan 1986 and 31 Dec 1990 excluding any cars that were regulated out of Competition by the FIA that comply with Ch. 13 App. 15 Art. 9.2. d or Ch13 App. 17 Art. 2.3. a. v.
Historic Category 5 – Cars homologated between 1 January 1991 and 31 December 1999 that comply with Ch. 13 App. 17 Art. 2.3. a. vi.
Permit. Within these Regulations a Permit is a form of written permission from the ASN( and where applicable to any International Event then by FIA or another ASN) and includes variously Permit, Event Permit, ASN Permit, Organising Permit, Promoters Permit, Championship Permit, Attempt Permit and Exemption of Permit.
Permitted Event. A Competition authorised by the ASN or by FIA or the ASN of another jurisdiction by the issue of a Permit whether with or without conditions attached to the issue of the Permit.
Permitted Fuel. Commercially available Motor Fuels- See Ch. 8 App. 1 Art. 1.7
Persons. All and any, but not limited to, participants, coaches, volunteers, teams, employees, any person howsoever connected to an Entry or Entrant at a Permitted Event and anyone involved in motor sport, whether or not they are ASN Licence Holders or otherwise.
Pit Lane. That part of the Track that provides Competition Vehicles with access to and from the Pits.
Pits. An area that may be provided by the Organisers for Competitors and their authorised Persons for the purpose of servicing Vehicles, in accordance with the Official Documents and that has direct access to the Pit Lane.
Ports( Inlet / Exhaust). Openings and passages in components forming or housing the combustion chamber and / or cylinders through which inlet and exhaust gases pass.
Practice including Qualifying Practice. That part of an Event intended to enable a Competitor to familiarise themselves with the Course or Track and which may be used by the Organisers to determine starting order or position. Practice is subject to all the Regulations and Official Documents governing the Event.
Practising / Training Event. An Event organised for the purpose of enabling Drivers to gain experience of their Vehicles. To qualify as a Practising / Training Event there must be no element of Competition, no awards, times may be recorded but not published and Vehicles may not be started simultaneously. There may be no revenue other than from Entry Fees.
Production Car Autotest. An Autotest Event restricted to strictly Production Cars as defined in the Specific Regulations, intended to encourage newcomers to the sport.
Production Kit Car. A minimum of ten identical cars must have been constructed within a twelve consecutive month period. The following items must be identical on all ten cars: wheelbase, track, engine type and specification, weight at front and rear wheels, body shape and material, wheel diameter, wheel rim width.( dimensions are subject to normal manufacturers’ [ i. e. homologation ] tolerances).
Programme. A document prepared by the Organisers of an Event for the purpose of informing the participants and spectators about the Event.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 1 Appendix 1- Definitions and Nomenclature 31