ANNEX IISupplementary provisions
ANNEX II SPECIFIC PROVISIONS FOR STAGE 2 OBW 1. This Annex applies exclusively to stage 2 OBW. 2. The motor vehicle and the trailers or semi-trailers of the vehicle combination featuring a trailer unit (‘TU’) shall be fitted with a C-ITS station connected to the motor vehicle unit (‘MVU’) or to the TU of the corresponding vehicle. The MVU and the TU may be integrated in their respective C-ITS stations. 3. The MVU and the TU shall transmit to the C-ITS stations to which they are connected the necessary information for the transmission of the messages in accordance with point 4.3 of this Annex. Figure 3 Example of flow of messages in a stage 2 OBW Sensor Sensor Sensor data for weight calculation Trailer or semi-trailer axle weights, security breach… Motor vehicle axle weight, total weight, security breach… C-ITS station Trailer or semi-trailer axle weight, security breach, communication error C-ITS station Sensor data for weight calculation TU MVU OBW Trailer OBW Motor vehicle 4. Exchange of information between motor vehicle and trailer or semi-trailer 4.1. The information on weight between motor vehicle and the trailers or semi-trailers being towed shall be exchanged through a wireless link set up between the C-ITS stations of the motor vehicle and those of the trailers or semi-trailers, in accordance with the standards EN 302 663-V1.1.1, with the exemption of clause 4.2.1, EN 302 636-4-1-V1.3.1, EN 302 636-5.1-V2.1.1 and with the European standard on the OBW application for C-ITS that shall be developed by ETSI. 4.2. Messages exchanged by the C-ITS stations shall be secured as laid down in point 5.1. 4.3. the following information shall be transmitted between the C-ITS stations: a) axle weight of the trailers or semi-trailers being towed; b) messages containing ‘OBW communication error’ events: a OBW communication error event shall be triggered when the C-ITS stations fail to establish a mutual secured communication in accordance with point 5.1 for more than three attempts; c) messages containing a ‘security breach attempt’ event: a security breach attempt event shall be triggered when an attempt to manipulate the OBW as set out in point 5.2 and in the Appendix has been detected by the OBW. 4.4. The format of the messages needed for the address assignment phase and for the transmission of the information referred to in point 4.3 shall be set out in the standard on the OBW application referred to in point 4.1. 5. Security provisions 5.1. Secure communication between C-ITS stations 5.1.1. The communication between C-ITS stations shall be secured in accordance with the European standard ETSI TS 103 097-V1.3.1 and with the European standard on the OBW application for C-ITS referred to in point 4.1. 5.1.2. In accordance with the Certificate Policy for Deployment and Operation of European Cooperative Intelligent Transport Systems, adopted by the Commission, the C-ITS stations shall get: a) An enrolment credential from an enrolment authority, authorising them to operate as C-ITS stations for the purpose of on-board weighing. b) A number of authorisation tickets from an authorisation authority allowing them to operate within the C-ITS environment as part of the OBW. 5.2. Protection against security breach attempts The protection of stage 2 OBW against security breach attempts shall be implemented in accordance with the Appendix to this Annex.