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This part of ISO 4254 specifies the general safety requirements and their verification for the design and construction of self-propelled ride-on machines and mounted, semi-mounted or trailed machines used in agriculture. In addition, it specifies the type of information on safe working practices (including residual risks) to be provided by the manufacturer. This part of ISO 4254 deals with significant hazards (as listed in Annex A), hazardous situations and events relevant to this agricultural machinery used as intended and under the conditions foreseen by the manufacturer (see Clause 4). For compliance with European Directives, Annex C is additionally applicable. This part of ISO 4254 is not applicable to - tractors, - aircraft, - air-cushion vehicles, or - lawn and garden equipment. This part of ISO 4254 is not applicable to environmental hazards, road safety, electromagnetic compatibility, vibration or power take-off (PTO) and PTO drive shaft guarding between self-propelled machines/tractors and the first bearing of recipient machinery. It is not applicable to hazards related to maintenance or repairs to be carried out by professional service personnel.