The evolution of machinery is outpacing the development of ROPS standards. This is a world-wide situation but the associated problems require solutions at both the international and national levels, with appropriate levels of integration. From the manufacturers' point of view, it would be desirable to design and test for only one set of roll-over protection criteria, independent of sector, but should not to lose sight of why the different standards have evolved. Key definitions associated with ROPS testing were given to avoid ambiguities. Information from the major stakeholders, gathered through personal contacts, a confidential questionnaire survey and a dedicated web site, was analysed using relational database and interpreted to provide clear, unbiased statements on the subject area from its evolution through to future trends. The survey responses and contacts identified 51 standards directly associated with ROPS testing and more than 40 machines that lacked defined approaches to the fitment of ROPS.
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