ĭifferent clubs had different standards and did not always recognize the same world records until 1924, when the Association Internationale des Automobile Clubs Reconnus (AIACR) introduced new regulations: two passes in opposite directions (to negate the effects of wind) averaged with a maximum of 30 minutes (later more) between runs, average gradient of the racing surface not more than 1 percent, timing gear accurate within 0.01sec, and cars must be wheel-driven. Until 1903, trains held the land speed record for fastest vehicles in which people could travel. Ralph DePalma in his Packard '905' Special at Daytona Beach in 1919 The first regulator was the Automobile Club de France, which proclaimed itself arbiter of the record in about 1902. History įurther information: Railway speed record A new record mark must exceed the previous one by at least one percent to be validated.

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') going in opposite directions within one hour. įIA LSRs are officiated and validated by its regional or national affiliate organizations. 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). 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. The land speed record ( LSR) or absolute land speed record is the highest speed achieved by a person using a vehicle on land. ThrustSSC, driven by Royal Air Force pilot Andy Green, holds the current land speed record at 1,220 km/h (760 mph) set October 15, 1997. For records by rail vehicles, see railway speed record. For the sport of setting land speed records, see land speed racing. For the album by the band Hüsker Dü, see Land Speed Record (album).

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