ISO/TS 25110:2008 defines the data transfer models between roadside equipment (RSE) and ICC, and the interface descriptions between RSE and OBE for on-board account using ICC. It also provides examples of interface definitions and transactions deployed in several countries. ISO/TS 25110:2008 covers: data transfer models between RSE and ICC which correspond to the categorized operational requirements, and the data transfer mechanism for each model; interface definition between RSE and OBE based on each data transfer model; interface definition for each model comprises functional configuration, RSE command definitions for ICC access, and data format and data element definitions of RSE commands; transaction examples for each model in Annex B.