Mass. Gen. Laws ch. 90, § 7CC: Transporting of special needs children

Section 7CC. Every person or company contracting to transport by motor vehicle one or more special needs children who are enrolled in a public or private school shall conspicuously display, in lettering, not less than four inches square, on such motor vehicle the name and address of the owner thereof. Whoever violates the provisions of this section shall be punished by a fine of one hundred dollars.