National Toll System InteroperabilityWere getting close A progress report on national toll system interoperability ..Whats next? National toll interoperability will be the cornerstone of any future user-based fees. By leveraging their collective expertise to shape federal policy, U.S. toll agencies could play a lead role in collecting vehicle miles traveled tax fees, should Congress decide to go that route in creating a new, sustainable funding source. If that happens, toll agencies could ensure their coexistence in a new world of revenue collection. https://www.hntb.com/wp-content/uploads/2019/10/2019_KevinHoeflich_TollingInteroperability.pdf -It means great growth potential for ETC, sustainable earnings etc..