Final answer:
The transportation code defines a motor vehicle used to draw an implement of husbandry as a tractor, a critical tool in modern farming.
Step-by-step explanation:
According to the Transportation Code, a motor vehicle designed and used primarily as a farm implement to draw an implement of husbandry is the definition of a tractor. This type of vehicle is essential for modern farming operations, which may include transporting crops to market and engaging in extensive agriculture that demands mechanized assistance. Mechanization has played a pivotal role in the development of agriculture, allowing farmers to efficiently manage larger plots of land, reducing the reliance on manual labor, and aiding in the implementation of agricultural innovations like the 3-field rotation system.