Tank Wagon 1
Tank Wagon 1 : A vehicle, including (but not limited to): (a) a tank truck or refuelling unit, that (i) has its own means of propulsion; and (ii) contains a tank; and (iii) is constructed for the primary purpose of the bulk transport of hazardous substances as a liquid or gas by road or rail; or (b) a tank semi-trailer, tank trailer, or rail wagon that (i) contains a tank; and (ii) is constructed for the primary purpose of the bulk transport of hazardous substances as a liquid or gas by rail or road