Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 84, § 7A

Surveyors of highways, road commissioners, or any other person, agency, or authority responsible for road or highway repairs shall notify the Massachusetts Bay Transportation Authority not later than forty-eight hours prior to the repair, construction or reconstruction of any road or highway used by said Authority in the operation of regular route service if such repairs, construction or reconstruction shall prohibit the operation of regular route service by the Authority over such road or highway.