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.
Horses in the Middle Ages the name of their breeder. The best riding horses were known as palfreys; other riding horses were often called "hackneys", from which the modern term "hack" is derived. Women sometimes rode palfreys or small, quiet horses known as jennets. A variety of work horses were used throughout the Middle Ages. The pack horse (or "sumpter horse") carried equipment and belongings. Common riding horses, often called "hackneys", could be used as pack horses. Cart horses pulled wagons for trading and freight haulage, on farms, or as part of a military campaign. These draught horses were smaller than their modern counterparts; pictorial