two animals) must be fixed rigidly to the vehicle's body. Four-wheeled vehicles remain level on their own, and so the shafts or pole are hinged vertically, allowing them to rise and fall with the movement of the animals. A four-wheeled vehicle is also steered by the shafts or pole, which are attached to the front axle; this swivels on a turntable or "fifth wheel" beneath the vehicle. From the 15th century drivers of carts were known as carmen, and in London were represented by the Worshipful Company of Carmen. In 1890 there were 13,800 companies in the United States in the business of building carriages pulled by horses. By 1920, only 90 such companies remained. Vehicles primarily for carrying people Road Ambulance: much the same purpose as the modern sense. Details of the design varied but would be a lightly built and well-sprung, enclosed vehicle with provision for seated casualties and stretchers. Barouche: an elegant, high-slung, open carriage with a seat in the rear of the body and a raised bench at the front for the driver, a servant. Berlin: A four-wheeled covered carriage developed in the 17th century. Brake: Describes several types of vehicles. A large, four-wheeled carriage frame, circa late 19th and early 20th century. Britzka: A long, spacious carriage of four wheels, pulled by two horses. Brougham: A specific, light four-wheeled carriage, circa mid 19th century. Buckboard: A very simple four-wheeled wagon, circa early 19th century. Buggy: a light, open, four-wheeled carriage, often driven by its owner. Cabriolet: a shortening of cabriolet. Joseph Hansom based the design of his public hire vehicle on the cabriolet so the name cab stuck to vehicles for public hire. Calash or Calèshe: see barouche: A four-wheeled, shallow vehicle with two double seats inside, arranged vis-à-vis, so that the sitters on the front seat faced those on the back seat. Cape cart: A two-wheeled four-seater carriage drawn by two horses and formerly used in South Africa. Cariole: A light, small, two- or four-wheeled vehicle, open or covered, drawn by a single horse. Carriage: in the late eighteenth century, roughly equivalent to the modern word "vehicle" [Walker]. It later came to be restricted to "passenger vehicle" and even to "private, enclosed passenger vehicle" [Britannica]. This last is the sense adopted by the linked article. Carryall: A type of carriage used in the United States in the 19th century. It is a light, four-wheeled