Trolley (horse-drawn) milk float is more a trolley than a float, as is the brewer's 'dray' seen at horse shows. Trolley (horse-drawn) Among horse-drawn vehicles, a trolley was a goods vehicle with a platform body with four small wheels of equal size, mounted underneath it, the front two on a turntable undercarriage. The wheels were rather larger and the deck proportionately higher than those of a lorry. A large trolley is likely to have had a headboard with the driver's seat on it, as on a lorry but a smaller trolley may have had a box at the front of the deck
Horse-drawn vehicle by a pair (or by a team of several pairs) have a "pole" which attaches between the wheel pair. Other arrangements are also possible, for example, three or more abreast (a "troika"), a wheel pair with a single lead animal (a "unicorn"), or a wheel pair with three lead animals abreast (a "pickaxe"). Very heavy loads sometimes had an additional team behind to slow the vehicle down steep hills. Sometimes at a steep hill with frequent traffic, such a team would be hired to passing wagons to help them up or down the hill. Horse-drawn carriages have been in use