Electronic toll collection system (ETC) is an automated charging method, and electronic toll collection application is the most comprehensive intelligent transportation system (ITS) applications. With the installation of the growing popularity of eTag vehicle users, the application for highway traffic management has demonstrated great efficiency. And the technology architecture of eTag which used in vehicle identification and charging platform, can also be applied to the work of other traffic management and transportation services. Therefore, the study use strategy map to analyze financial perspective, customer perspective, internal perspective and learning and growth perspective, proposing the technology of eTag to make possible application as the future transport policy and technology development of reference and enhance the integrity degree of intelligent transportation system.