scope:

This document establishes requirements for short-range communication for the purposes of augmenting the localisation in autonomous electronic fee collection (EFC) systems. Localisation augmentation serves to inform OBE about geographical location and the identification of a charge object. This document specifies the provision of location and heading information and security means to protect from the manipulation of the OBE with false RSE.

The localisation augmentation communication (LAC) takes place between an OBE in a vehicle and fixed RSE. This document is applicable to OBE in an autonomous mode of operation.

This document specifies attributes and functions for the purpose of localisation augmentation, by making use of the dedicated short-range communications (DSRC) communication services provided by DSRC Layer 7, and makes these LAC attributes and functions available to the LAC applications at the RSE and the OBE. Attributes and functions are specified on the level of Application Data Units (ADUs, see Figure 1).

As depicted in Figure 1, this document is applicable to:

- the application interface definition between OBE and RSE;

- the interface to the DSRC application layer, as specified in ISO 15628 and EN 12834;

- the use of the DSRC stack.

The LAC is suitable for a range of short-range communication media. This document gives specific definitions regarding the CEN-DSRC stack as specified in EN 15509, and Annexes C, D and E give the use of the Italian variant of DSRC as specified in ETSI/ES 200 674-1, ISO CALM IR, and ARIB DSRC.

This document contains a protocol implementation conformance statement (PICS) proforma in Annex B and informative transaction examples in Annex F. The informative Annex G highlights how to use this document for the European Electronic Toll Service (EETS).

Test specifications are not within the scope of this document.