(a) Tank Truck. Any motor vehicle used for the transportation of flammable liquids and which for such purpose is provided with a tank or tanks mounted on the frame or chassis of such vehicle.
(b) Tank Trailer. Any vehicle without its own motive power but drawn by a motor vehicle, used for the transportation of flammable liquids and which for such purpose is provided with a tank or tanks mounted thereon.
(c) Tank Semitrailer. A vehicle of the tank trailer type so designed and used in conjunction with a motor vehicle that when in use a part of its own weight and load is supported by the motor vehicle.
(d) Fuel Tank. The tank designed to contain only the fuel to be used by the engine of the truck upon which it is mounted.
(Prior code § 129.1-90)