Inova Corporation has been selected to furnish the Metropolitan Atlanta Rapid Transit Authority with an audio passenger information system to all 23 stations on the North/South rail line. The complete system provides passengers with automatic real-time train arrival and departure information. In addition to the interface to the train control and public address systems, Inova will provide a custom touch screen at each station, enabling operators to send ad-hoc messages as needed. All public address messages can be sent to single stations, groups of stations, or all 23 stations combined.