The person with management or control of a tractor ensures it is not used unless securely fitted with a roll-over protective structure, which may be lowered or removed only while working in a place too low for it and with other roll-over controls in place; tractors fixed in position, under 560 kg or 15,000 kg and over, or used for historical purposes are excluded.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.