A self propelled modular transporter (SPMT) is a heavy-duty trailer with a large number of wheels. Self propelled modular transporters are often used to transport huge objects, such as large bridge profiles, oil refining equipment, cranes, motors, spacecraft, or objects that cannot be transported by other tools.
Self propelled modular transporter is widely used in many industries, such as the construction industry, the petroleum industry, the shipbuilding industry, the marine industry, and the road transportation industry. Although they are very versatile nowadays, their development process is actually very short. In only a short period of about 50 years, the self-propelled modular transporter completed the whole process from birth to promotion in nearly half a century.
The first self-propelled modular transporter for sale was born in the 1970s. In the early 1980s, a well-known heavy-duty transportation company standardized this concept and set the preliminary basic parameters of this type of transportation vehicle. They set the width of the self-propelled modular transporter to 2.44 meters, adding the function of 360-degree steering.
In 1983, two heavy-duty transport vehicle companies in the United States delivered two new self-propelled modular transporters, a 4-axle self-propelled modular transporter, and a 6-axle self-propelled modular transporter. These two self-propelled modular transporters redefine the industry standard. Over the years, more advanced self propelled modular transporters with have been put into use to better meet the needs of all walks of life.