Abstract: A warning system provides for notification of the approach of a track guided train to a user work area perimeter. The system includes at least one sensor, preferably a plurality of sensors, for sensing the approach of a train. Data is collected and analyzed, with the analysis including the status of preprogrammed system criteria. Signals are transmitted to a remote receiving member. The remote receiving member can be part of an annunciator. An analysis member receiving and analyzes the signals and determines whether it is necessary to transmit a warning signal. At least one indicator provides a warning notification to a user. The data collection device at least periodically transmits signals to the programmable data analysis member and the analysis member determines the absence or proximity of a train.