Harness racing use a standing start. The sulky (informally known as a "bike") is a light, two-wheeled cart equipped with bicycle wheels. The driver (not a "jockey", as in thoroughbred racing) carries a light whip chiefly used to signal the horse by tapping and to make noise by striking the sulky shaft. There are strict rules as to how and how much the whip may be used; in some jurisdictions (like Norway), whips are forbidden. For exercising or training, the drivers use what is known as a "jog cart," which is a sulky that is heavier and bulkier than a racing unit.
History of the horse in Britain 5,500 BC. Pre-domestication wild horse bones have been found in Neolithic tombs of the Severn-Cotswold type, dating from around 3500 BC. Domesticated horses were present in Bronze Age Britain from around 2000 BC. Bronze Age horse trappings including snaffle bits have been found which were used in harnessing horses to vehicles; Bronze Age cart wheels have been found at Flag Fen and Blair Drummond, the latter dating from around 1255–815 BC, though these may have belonged to vehicles pulled by oxen. Early Bronze Age evidence for horses being ridden is lacking, though bareback riding may have involved materials which have