An Act relative to the taxation of rolling stock

This bill amends Massachusetts tax laws to explicitly include trucks, tractors, and trailers used by common carriers for interstate commerce under the definition of "rolling stock." By adding this category to specific tax chapters, the legislation ensures that the sale, storage, use, or consumption of these vehicles is subject to existing sales and use tax rules. The changes directly affect businesses that operate commercial fleets, clarifying that their heavy-duty vehicles are taxable assets rather than exempt equipment.