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.
Cart Cart A cart is a vehicle designed for transport, using two wheels and normally pulled by one or a pair of draught animals. A "handcart" is pulled or pushed by one or more people. It is different from a dray or wagon, which is a heavy transport vehicle with "four" wheels and typically two or more horses, or a carriage, which is used exclusively for transporting humans. Over time, the term "cart" has come to mean nearly any small conveyance, from shopping carts to golf carts or UTVs, without regard to number of wheels, load carried, or means of propulsion.