Mass. Gen. Laws ch. 92 § 95A
The commission may grant permits, upon such terms and conditions and for such considerations or rentals as the commission may deem proper, for the projection of signs, marquees, awnings and other devices over its property or over property under its care and control, and for that purpose may adopt, reasonable rules and regulations and assess penalties for violations thereof. Before the issue of a permit hereunder, the applicant shall file with the commission a bond running to the commission, in such penal sum as the commission shall determine, to indemnify and save harmless the commission and its agents and employees from all claims, loss, damage and expense in any way relating to or connected with such permit. This section shall not apply to signs or other structures projecting into or over the way a distance of less than six inches, nor to poles, wires, conduits and appurtenances of railroad, railway, telegraph and telephone, water, gas, electric light, heat and power companies.
Mass. Gen. Laws ch. 92, § 95A