Hot Lap Challenge. A Hot Lap Challenge is run over a number of sessions to determine the Competitor( in Class) completing the fastest lap time. Drivers are not competing against each other but against the clock and in a manner equivalent to a timed qualifying session. By display of their headlights Drivers indicate they are attempting their flying lap( hot lap).
Overtaking should only be carried out on the left. Hybrid Vehicle. A Vehicle that uses two or more distinct power sources to propel the Vehicle. IC Engine. An internal combustion engine
Identical Cars. Cars belonging to the same production Series and which have the same Bodywork( outside and inside), same mechanical components and same Chassis( even though this Chassis may be an integral part of the Bodywork in the case of a monocoque or unitary construction).
Ignition cut-off. A switch / device which stops the electrical flow to the Vehicle ignition system and stops the engine. Incident. An unintended occurrence during an Event.
Interclub Event. An Event in which the Competitors or Drivers who take part have to comply with particular conditions of eligibility for instance:
a. Membership of an Invited Club or Championship. b. A Competition confined to Vehicles of a particular make.
International Event. An Event is International when it is Permitted as such and entered on the FIA International Calendar and is run to the provisions of the Code and open to Competitors and Drivers of all ASN nationalities.
International Record. The best performance accomplished in a determined Class or group. There are International Records for Land Vehicles, Automobiles, Special Vehicles and Ground Effect Vehicles.
Judge of Fact. A person appointed by Organisers and named in Official Documents as having responsibility to determine or decide on any factual occurrence in connection with a Competition and to report to the relevant Event Official.
Junior Autocross. A restricted Autocross Class held to permit young Drivers between the ages of 14-17 years of age to compete in Autocross Events.
Kart. A small four wheel racing Vehicle with a rigid frame and no suspension of the wheels. The engine( s) drive the rear wheels only and these rear wheels must be joined by a single piece rear axle with no differential action between them. The Driver will be seated with feet to the fore.
Kart Category. A category within which Kart Classes are recognised and may include defining the age, and in some cases weight, criteria of the Competitor.
Kart Class. A recognised division within a Kart Category defined by the engine or some other means.
Kart Clubman Event. A Kart Clubman Event is a Kart Race Event run primarily as Entry level Karting. Engines may not exceed 17hp for Seniors or 10hp for Juniors, in total per Kart. Competitors must hold a Kart Clubman’ s Licence, as a minimum
Kart Super K-X Event. see Ch. 18 Art. 4.6 Kart K-X Event. see Ch. 18 Art. 4.7
Kit Cars. A Vehicle in which the Chassis frame, body panels and other major components are manufactured and / or supplied from one manufacturer to which other specified components and parts are added / assembled to produce a complete Vehicle.
Land Vehicle, Automobile, Special Vehicle, Ground Effect Vehicle.
a.
Land Vehicle. A locomotive device propelled by its own means, moving by constantly taking real support on the earth’ s surface, of which the propulsion and steering are under the Control of a Driver aboard the Vehicle.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 1 Appendix 1- Definitions and Nomenclature 27