- Gross vehicle weight rating
A gross vehicle weight rating (GVWR) is the maximum allowable total
weightof a road vehicleor trailer when loaded - i.e including the weight of the vehicle itself plus fuel, passengers, cargo, and trailertongue weight.
The difference between gross weight and
curb weightis the total passenger and cargo weight capacity of the vehicle. For example, a pickup truck with a curb weight of 4500 pounds might have a cargo capacity of 2000 pounds, meaning it can have a gross weight of 6500 pounds when fully loaded.
United States, two important GVWR limitations are 6,000 pounds (2,721 kg) and 8,500 pounds (3,856 kg). Vehicles over 6,000 pounds are restricted from many cityroadways (though there is some dispute about whether this restriction is for actual curb weight or GVWR), and vehicles over 8,500 pounds do not have to display EPA estimated fuel mileage or a Monroney stickernor are they subject to state emissions testing. Another important GVWR limitation is 10,001 pounds: freight vehicles above this threshhold are required to have insurance under Section 387.303 of the Motor Carrier Act of 1980.
Most U.S. cars have a placard (sticker) with this information. It is located typically either in the driver's side door or doorframe, owners manual, or also may be present on another sticker immediately under the hood near the radiator, although that sticker more typically contains information about the size of the motor, various fluid capacities, etc.
Most U.S. commercial trucks (especially semi-trailer trucks and dump trucks) are required by licensing authorities to have this information printed on the outside of the vehicle and for it to be clearly visible from a specified distance. Many do so by painting these numbers in a large font on the driver's side of the truck near or on the door.
For vehicles containing no fuel or driver, the gross weight is the sum of the tare weight (the unladen vehicle weight) and the weight of the load carried. For the measuring of loads picked up at a depot or materials yard (such as gravel or rock, or other bulk goods), the weight of the driver, fuel, and existing loads are assumed to be constant between the weighing of the vehicle upon entrance (tare) and laden (gross) upon exit. Such weights are determined by a specialized scale called a weigh bridge, and such scales will usually have a computing function within the display to compute tare weight.
* [http://alternativefuels.about.com/od/glossary/g/gvwr.htm What is GVWR?] from
Gross axle weight rating(GAWR)
Gross combined weight rating(GCWR)
Gross trailer weight rating(GTWR)
Corporate Average Fuel Economy(CAFE)
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