This International Standard specifies the application interface in the context of electronic fee collection (EFC) systems using the dedicated short-range communication (DSRC).The EFC application interface is the EFC application process interface to the DSRC application layer, as can be seen in Figure 1 below. This International Standard comprises specifications of. EFC attributes (i.e. EFC application information) that can also be used for other applications and/orinterfaces,. the addressing procedures of EFC attributes and (hardware) components (e.g. ICC and MMI),. EFC application functions, i.e. further qualification of actions by definitions of the conce