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.
Un-sprung cart Un-sprung cart The un-sprung cart was a simple, sturdy, one-horse, two-wheeled vehicle used by roadmen, farmers and the like for small loads of relatively dense material like road metal or dung. In Australia and New Zealand, it is frequently called a dray. Elsewhere, that is a name occasionally used. The name dray is also used for a wagon. A sprung cart, by contrast was a light, one-horse (or often, pony), two-wheeled vehicle with road springs, for the carriage of passengers on informal occasions. It was a class of vehicles with the name varying according to the body mounted on it.