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ENTERPRISE
The ENTERPRISE Program is a pooled-fund study comprised of member agencies (State Departments of Transportation) from North America and Europe.  The primary mission of the ENTERPRISE Program is to develop and carry out a joint research program to develop, evaluate, and deploy Intelligent Transportation Systems (ITS) technologies.

Smart Tag - Electronic Toll Collection Along Virginia Toll Facilities
Castle Rock performs operations of the Virginia Electronic Toll Collection (ETC) – Smart Tag.  Castle Rock operates the service centers that administer the tolls for five toll facilities throughout Virginia.  To date, over 330,000 active transponders are in vehicles along the systems, and the service center processes over 340,000 electronic toll transactions per day.