Depending on what part of the world you are in, a lowboy trailer, also known as a double drop, low loader, low-bed, or a float trailer, is a semi-trailer with a drop deck. A lowboy trailer is commonly used to haul heavy equipment and machinery, such as excavators, bulldozers, and other large construction equipment. The lowboy trailer is perfect for hauling large equipment like this because they are usually tall and wide and would exceed standard legal height and weight restrictions. Disclaimer Our content is not in any way legal advice or binding. The information provided by might not be the official legal or full definition. Also when pursuing a specific transaction you are encouraged to conduct your own due diligence and to consult legal counsel as appropriate.