Automatic Car Identification (ACI) – provide design, installation and testing for 50 RF scanners at 23 locations throughout the metro system. Twenty of these locations will utilize wireless radio communications to relay data from the wayside back to OCC (operations control center). The other 3 locations will be hardwired. The collected data will be used to track vehicles along the system which ultimately result in mileage calculations to be used by maintenance and OCC.