This part of ISO/TS 14907 describes tests that verify on-board unit (OBU) conformance of implementations of functions and data structures, as defined in the implementation conformance statement based on ISO 14906:2011, for electronic fee collection (EFC) applications. After the tests of isolated data items and functions (C.1-C.2), an example is given for testing of a complete EFC transaction (C.3).The scope of this part of ISO/TS 14907 comprises definitions of OBU conformance assessment tests of? basic dedicated short-range communication L7 functionality,? EFC application functions,? EFC attributes (i.e. EFC application information),? the addressing procedu