Mass. Gen. Laws ch. 90, § 7R: Vehicle identification number; display in certain motor vehicles

Section 7R. All motor vehicles, and all trailer and semi-trailers manufactured for the model year nineteen hundred and seventy-nine and thereafter and registered under the provisions of sections two to five, inclusive, shall be equipped with and display a vehicle identification number, in accordance with such minimum requirements and design as the registrar may prescribe under rules and regulations made by him.