The bill amends sections 31-1-3 and 31-1-4 of the General Laws in Chapter 31-1, which pertain to definitions and general provisions related to vehicles. It allows for trucks with a gross vehicle weight of eight thousand pounds (8,000 lbs.) or less to be registered as automobiles and issued passenger registration license plates. The bill clarifies that trucks are primarily designed for transporting property, but those meeting the specified weight criteria can be registered as automobiles. The act is set to take effect upon passage, enabling the new registration provisions for qualifying trucks to be implemented immediately.