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.
Sprung cart Sprung cart A sprung cart was a light, one-horse (or more usually pony), two-wheeled vehicle with road springs, for the carriage of passengers on informal occasions. Its name varied according to the body mounted on it. Examples were the "ralli car", "jaunting car", "governess cart", "tax cart" (or "taxed cart") and "Whitechapel cart". Some light domestic delivery vans were also of this pattern. An Australian spring cart was a simple cart designed for carrying goods and did not have seating for driver or passengers. The driver usually sat on the sacks or goods carried. The shafts were wider than usual