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.
Bactria–Margiana Archaeological Complex basin at Mundigak in western Afghanistan and Shahr-e Sukhteh in eastern Iran, or at Harappa and Mohenjo-daro in the Indus Valley. Models of two-wheeled carts from c. 3000 BC found at Altyn-Depe are the earliest complete evidence of wheeled transport in Central Asia, though model wheels have come from contexts possibly somewhat earlier. Judging by the type of harness, carts were initially pulled by oxen, or a bull. However camels were domesticated within the BMAC. A model of a cart drawn by a camel of c. 2200 BC was found at Altyn-Depe. Sarianidi regards Gonur as the "capital" of the