Prior to the Industrial Revolution, the horse and buggy represented the primary mode of public and private transportation. So, it is no surprise that driving has established itself as one of the oldest and most popular disciplines within competitive equestrian sport. Carriage pleasure driving classes pay tribute to this heritage, and the vehicles used in competition are either actual antique or replica carriages of the day. Classes may be divided by type of hitch: single, pair, tandem, unicorn, or four-in-hand, and can be further categorized by the criteria with which they are judged.