STAA doubles or double pups are a type of
long combination vehicle
A road train, also known as a land train or long combination vehicle (LCV) is a semi-trailer used to move road freight more efficiently than single-trailer semi-trailers. It consists of one semi-trailer or more connected together with or wit ...
in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. They are named for the
Surface Transportation Assistance Act (STAA) of 1982.
Each trailer is long and wide. The doubles are connected via a
dolly. This long combination vehicle is the only combination of trailers allowed nationwide in the United States. The axle weight allowed is per single axle. STAA double make up less than 3% of the freight trailer fleet in the United States.
See also
*
Federal Bridge Gross Weight Formula
The Federal Bridge Gross Weight Formula, also known as Bridge Formula B or the Federal Bridge Formula, is a mathematical formula in use in the United States by truck drivers and Department of Transportation (DOT) officials to determine the ap ...
*
Road train
A road train, also known as a land train or long combination vehicle (LCV) is a semi-trailer used to move road freight more efficiently than single-trailer semi-trailers. It consists of one semi-trailer or more connected together with or wit ...
References
{{Truck-stub
Trucks
Articulated vehicles