‘Sec. 1. 29-A MRSA §2081, sub-§3-A, as amended by PL 2005, c. 12, Pt. AAA, §3, is further amended to read:
3-A. Other passengers 18 years of age and older; operators. When a person 18 years of age or older is a passenger in a vehicle that is required by the United States Department of Transportation to be equipped with seat belts, the passenger must be properly secured in a seat belt. Each such passenger is responsible for wearing a seat belt as required by this subsection, and a passenger that fails to wear a seat belt as required by this subsection is subject to the enforcement provisions of subsection 4. The operator of a vehicle that is required by the United States Department of Transportation to be equipped with seat belts must be secured in the operator's seat belt. Violation of this subsection is a traffic infraction for which a fine of $50 for the first offense, $125 for the 2nd offense and $250 for the 3rd and subsequent offenses must be imposed. A fine imposed under this subsection may not be suspended by the court. A vehicle, the contents of a vehicle, the driver of or a passenger in a vehicle may not be inspected or searched solely because of a violation of this subsection.’