Division 2.6.4.1 M1 vehicles United Kingdom Original text. Later amendments are not shown. 2.6.4.1.1Division 2.6.4.1.1 2.6.4.1.2As regards motor caravans the minimum pay-mass (PM) shall meet the following requirement: ← Division 2.6.4 Division 2.6.4.1 Division 2.6.4.1.1 →