This proposed new work item covers the standardisation of an Interoperable Compliance Checking Transaction to be used in autonomous (GNSS/CN) EFC systems as being defined in CEN ISO/TS 17575-1/4 over short range communication media. This standard will define the data structure, semantics and the communication sequence to be read by various interrogators from passing vehicles in a free flow environment. Security requirements will be taken into account.Interrogator means will include fixed equipment, mobile enforcement devices as well as hand held units. To achieve compatibility with existing systems the communication stack will support whenever reasonable da