The Texas Department of Transportation has entered into bilateral reciprocity agreements with several states and is also a member of the International Registration Plan. For enforcement purposes, the Department of Public Safety defines the term apportionable vehicle to mean a vehicle that:
  (1) is a power unit having two axles and a gross weight or registered gross vehicle weight in excess of 26,000 pounds or 11,794 kilograms; or
  (2) is a power unit having three or more axles, regardless of weight; or
  (3) is used in combination, when the weight of such combination exceeds 26,000 pounds or 11,794 kilograms gross vehicle weight.

Source Note: The provisions of this §4.34 adopted to be effective March 9, 2004, 29 TexReg 2376