This Technical Specification 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 Technical
Specification specifies the provision of location and heading information and security means to protect from
the manipulation of the OBE with false road-side equipment (RSE).
The localisation augmentation communication takes place between an OBE in a vehicle and fixed road-side
equipment. This Technical Specification is applicable to OBE in an autonomous mode of operation.
This Technical Specification defines attributes and functions for the purpose of localisation augmentation, by
making use of the 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 defined on the level of ADUs (Application Data Units, see Figure 1).