A flatbed truck is a type of commercial vehicle with an open cargo bed without sides or a roof. It features a flat, level surface that allows for easy loading and unloading of various types of cargo, especially oversized or irregularly shaped items that might not fit within the confines of an enclosed truck or trailer. Flatbed trucks are commonly used for transporting construction materials, heavy equipment, machinery, vehicles, and other large or bulky items.

The dimensions of flatbed trucks can vary based on the specific model, manufacturer, and regulations, but in the USA, the general dimensions for flatbed trucks are as follows:

Length: Flatbed trucks come in various lengths, ranging from approximately 20 feet (6.10 meters) for smaller models to over 48 feet (14.63 meters) for longer versions.
Width: The width of a flatbed truck is typically around 8 to 8.5 feet (2.44 to 2.59 meters), which is consistent with the standard width of most commercial vehicles.
Height: Since flatbed trucks do not have sides or roofs, the height of the cargo being transported is not limited by the truck itself. However, cargo must still adhere to height restrictions and regulations set by road authorities.

Flatbed trucks can be categorized based on their weight ratings and capacities. Common classes for flatbed trucks include Class 5 (GVWR between 16,001 and 19,500 pounds), Class 6 (GVWR between 19,501 and 26,000 pounds), and Class 7 (GVWR between 26,001 and 33,000 pounds), among others.

There are several variations of flatbed trucks, including standard flatbeds, drop-deck flatbeds (also known as step-deck or lowboy flatbeds), and extendable flatbeds, each designed to accommodate different types of cargo and loading requirements.

Flatbed trucks are valued for their versatility, as they can handle a wide range of loads that might be too large, heavy, or awkwardly shaped for enclosed trailers. They are commonly seen on construction sites, industrial yards, and highways, transporting goods that cannot be easily accommodated by other types of trucks.

As with any commercial vehicle, flatbed truck operators need to be aware of regulations related to weight limits, secure loading practices, and any special permits that might be required for oversized loads. It's important to comply with safety regulations to ensure the safe transportation of cargo and the wellbeing of all road users.