a.Thi s specification covers diesel and gasoline engine driven,
four-wheel, two- or four-wheel drive, and six-wheel, four- or six-wheel
drive, single or dual delivery fuel servicing and aircraft fuel servicing
tank trucks, with product capacities from 1,000 to 4,000 gallons, having
minimum gross vehicle weights(GVW) of 16,000 to 50,000 pounds for normal
operating conditions.