This part of ISO 12003 specifies procedures for both the static and dynamic testing of roll-over protective
structures (ROPS) rear-mounted on narrow-track wheeled agricultural and forestry tractors. It defines the
clearance zone and acceptance conditions for rigid or tiltable, rear, two-post roll bar, frame and cab ROPS, and
is applicable to tractors so equipped having the following characteristics.
- A ground clearance of not more than 600 mm beneath the lowest points of the front- and rear-axle housings
(not considering lower points on the axle differential).
- A fixed or adjustable minimum track width of one of the two axles of less than 1 150 mm when fitted with
the widest specified tyres, and with the overall width of the other axle being less than that of the first axle.
- A mass greater than 600 kg but less than 3 000 kg, unladen, including the ROPS and tyres of the largest
size recommended by the manufacturer.