Self-trailering
Encyclopedia
Self-trailering is an engineering
Engineering
Engineering is the discipline, art, skill and profession of acquiring and applying scientific, mathematical, economic, social, and practical knowledge, in order to design and build structures, machines, devices, systems, materials and processes that safely realize improvements to the lives of...

 design that enables a large piece of equipment to convert or transform into a trailer
Trailer (vehicle)
A trailer is generally an unpowered vehicle pulled by a powered vehicle. Commonly, the term trailer refers to such vehicles used for transport of goods and materials....

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Much agricultural equipment is manufactured in this way. It is then designed to be driven through the field in one direction, and trailered in the other direction. Examples include combine headers, crop planters, compost windrow turners, and field plowing equipment
Plough
The plough or plow is a tool used in farming for initial cultivation of soil in preparation for sowing seed or planting. It has been a basic instrument for most of recorded history, and represents one of the major advances in agriculture...

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