Maine Revised Statutes Title 29-A. Motor Vehicles § 2061. Riding in trailers

A. An employee in the necessary discharge of duties to an employer;

B. A trailer being utilized for farming or agricultural purposes;

C. A trolley trailer, as defined in section 101, subsection 87, when all passengers on the trolley trailer are seated and the towing machine does not exceed 10 miles per hour; or

D. A person with a disability, as defined in section 521, in a vehicle that requires road service when it is not practical to transport the person with a disability by any other means.