This European Standard is applicable to concrete sleepers or bearers with Under Sleeper Pads (USP) physically bonded to concrete used in ballast track and defines the test procedures and their acceptance criteria. This standard provides particular information in the following areas: tests methods, tests arrangements and acceptance criteria of Under Sleeper Pads, tests methods, tests arrangements and acceptance criteria of concrete sleepers and bearers with Under Sleeper Pads, data supplied by the purchaser and by the supplier, definition of general process of qualification, definition of routine tests. This standard defines the specific test procedures for Under Sleeper Pad with or without concrete sleepers and bearers: Fatigue tests, Tests of capability for stacked stocking of concrete sleepers or bearers fitted with USP, Pull-out test, Severe environmental condition test In addition to specifying the basic testing of relevant properties of USP, this standard also sets out procedures for testing fitness for purpose and provides information on quality monitoring as part of quality assurance procedures. This standard does not, however, contain requirements pertaining to the properties of Under Sleeper Pads. It is the responsibility of the purchaser to define these requirements.