This definition appears very rarely
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Samples in periodicals archive:
They say that 80% of buses in West Yorkshire will have Smartcard enabled Enhanced Traffic Management systems fitted within the next 18 months.
7M, 5 year contract from the Volpe National Transportation Systems Center to provide weather data and products to the FAA's Enhanced Traffic Management System (ETMS).
With roughly 8,000 airplanes in the air at any given time, the successful execution of the FAA's mission largely depends on the highly complex Traffic Flow Management (TFM) infrastructure and its real-time Enhanced Traffic Management System (ETMS).