Me. Stat. tit. 29-A § 2078
For public safety or convenience, during a fire, accident, emergency or special event, a law enforcement officer may temporarily close a way to vehicular traffic or to vehicles of a certain description, or divert pedestrian or vehicular traffic. [1993, c. 683, Pt. A, §2(NEW); 1993, c. 683, Pt. B, §5(AFF).]
An operator or pedestrian commits a Class E crime if that operator or pedestrian refuses to follow the directions for the movement of vehicles or pedestrians on request or signal of a law enforcement officer or if the operator or pedestrian knowingly refuses to follow the direction of a sign clearly posted by a law enforcement officer to temporarily close a way to vehicular traffic or to vehicles of a certain description or to divert pedestrian or vehicular traffic during a fire, accident, emergency or special event. For the purposes of this section, a posted sign must include language sufficiently describing the restriction or prohibition and must include the fact that a violation is a Class E crime. [2009, c. 251, §11(AMD).]
29-A M.R.S. § 2078