The land speed record (LSR) or absolute land speed record is the highest speed achieved by a person using a vehicle on land. By a 1964 agreement between the Fédération Internationale de l'Automobile (FIA) and Fédération Internationale de Motocyclisme (FIM), respective governing bodies for racing in automobiles and motorcycles (two or three wheels), both bodies recognise as the absolute LSR whatever is the highest speed record achieved across any of their various categories.[1] While the three-wheeled Spirit of America set an FIM-validated LSR in 1963, all subsequent LSRs are by vehicles in FIA Category C ("Special Vehicles") in either class JE (jet engine) or class RT (rocket powered).[2][3]
FIA LSRs are officiated and validated by its regional or national affiliate organizations.[4] Speed measurement is standardized over a course measuring either 1 kilometre (0.62 mi) or 1 mile (1.6 km), averaged over two runs with flying start (commonly called "passes")[5] going in opposite directions within one hour. A new record mark must exceed the previous one by at least one percent to be validated.[6]
- ^ Cite error: The named reference
times19641212was invoked but never defined (see the help page). - ^ "List Of FIA Absolute World Records" (PDF). FIA. Retrieved April 9, 2023.
- ^ "Official List Of World Speed Records Homologated By The FIA In Category C" (PDF). FIA. Retrieved April 9, 2023.
- ^ "FIA land speed records". FIA. Archived from the original on October 11, 2008. Retrieved October 16, 2008.
- ^ Regulations for Record Attempts – CHAPTER 2 Archived November 23, 2010, at the Wayback Machine – FIA
- ^ "§105. Conditions for the recognition of international or world records". Sporting Code: Chapter 7: Records. FIA. Archived from the original on December 21, 2008. Retrieved October 16, 2008.