Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 90, § 34G

If a judgment rendered against the principal on a motor vehicle liability bond or against any person responsible for the operation of the principal's motor vehicle with his express or implied consent is not satisfied within thirty days after its rendition, the judgment creditor may for his use and benefit and at his sole expense bring an action in the name of the commonwealth against the surety company executing the bond.