How does IFTA define a "qualified motor vehicle"?

IFTA defines a "qualified motor vehicle" as "a motor vehicle used, designed, or maintained for transportation of persons or property."

IFTA also defines a "qualified motor vehicle" as:

• having two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 pounds or 11,797 kilograms; or
• having three or more axles regardless of weight; or
• is used in combination, when the weight of that combination exceeds 26,000 pounds or 11,797 kilograms gross vehicle or registered gross vehicle weight;
• not a recreational vehicle.