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tw

Defined in 1 place of the United States Code.

Test weight.—The term "test weight" and the abbreviation "tw" mean the vehicle curb weight added to the gross vehicle weight rating (gvwr) and divided by 2.

Source

The term “test weight” and the abbreviation “tw” mean the vehicle curb weight added to the gross vehicle weight rating (gvwr) and divided by 2.

Source