When driving in Austria it is mandatory for all vehicles above 3.5 tons to have an OBE, which is approved in Austria (e.g. GO-Box, EETS OBE, EasyGo+ OBE).  You can order an EasyGo+ OBE from your Service Provider.

EasyGo+ OBEs can be used in all EasyGo Toll Domains with which the Service Provider has an agreement, also outside Austria.