This European Standard specifies the safety requirements for truck mixers. This document also covers the interfaces on the mixing unit side with the truck or trailer (but not the truck or trailer itself). NOTE 1 Truck or trailer constructed primarily for the carriage of goods as classified according to directive 2007/46/EC@ category N3 or O4. This European Standard does not cover: a) additional equipment (conveyor belt@ mortar pump@ concrete pump@ concrete-placing boom); b) requirements for operation in tunnels; c) truck mixers equipped with self-loading systems; d) front-discharge mixers; e) mixing units with articulated steering; f) external cleaning systems; g) hybrid driving systems. This European Standard does not deal with carrier vehicles@ e.g. trucks@ tractors@ construction machinery and mobile industrial handling equipment or other self-propelled vehicles. NOTE 2 These requirements are covered in directives related to the construction of vehicles. This European Standard does not include requirements which are covered in directives related to the construction of vehicles or national road regulations. The use in public road traffic is governed by the national regulations. This document deals with all significant hazards@ hazardous situations and events relevant to truck mixers when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards during transportation@ assembly@ dismantling@ disabling@ scrapping@ operation and maintenance of the truck mixer. This document is not applicable to machines which are manufactured before the date of publication of this document by CEN.