This European Standard, to be used together with EN ISO 4254-1, specifies the safety requirements and their verification for the design and construction of semi-mounted, trailed and self-propelled slurry tankers, including their spreading or injecting devices, intended for spreading or injecting slurry which are operated by either pneumatic or mechanical power. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. When requirements of this European Standard are different from those which are stated in EN ISO 4254-1, the requirements of this European Standard take precedence over the requirements of EN ISO 4254-1 for machines that have been designed and built according the provisions of this European Standard. This European Standard, taken together with EN ISO 4254-1, deals with all the significant hazards, hazardous situations and events relevant to slurry tankers, when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Table A.1), excepting the hazards related to road safety (e.g. steering, braking). Environmental aspects have not been considered in this European Standard. This European Standard is not applicable to slurry tankers which are manufactured before the date of its publication as EN.