Freight bicycles, carrier cycles, freight tricycles, cargo bikes, box bikes, or cycletrucks are human powered vehicles designed and constructed specifically for transporting loads. Vehicle designs include a cargo area consisting of an open or enclosed box, a flat platform, or a wire basket, usually mounted over one or both wheels, low behind the front wheel, or between parallel wheels at either the front or rear of the vehicle. The frame and drivetrain must be constructed to handle loads larger than those on an ordinary bicycle.
The first freight bicycles were used by tradesmen to deliver mail, bread and milk amongst other things. Early freight bicycles were heavy-duty standard bicycles, with heavy carriers at front or rear, sometimes with a smaller front wheel to accommodate a large front carrier. During the early part of the 20th century these were commonly used by tradesmen for local deliveries. In the UK this style is still sometimes known as a butcher's bike or delibike, although the Post Office have by far the largest fleet.
With the domination of the internal combustion engine in the industrialized countries after World War II, freight bikes became less popular. In the rest of the world, however, they continued to be manufactured and heavily used. In the 1980s in Europe, and the 1990s in the US, ecologically-minded designers and small-scale manufacturers initiated a revival of the freight bike manufacturing sector.
Freight bikes are used in a variety of settings:
Freight bicycles have a number of advantages over motorised vehicles:
A limitation of any human-powered vehicle is the relative weakness of human power compared to many motors, leaving a narrow scope for balancing tare weight, payload, geographical and topographical range against each other. These limitations might in some cases dissuade some people from using cargo bikes, whereas others still find them useful, and have been in increasing numbers.