A wireless system and method for locating the position of a movable signal emitter located inside or adjacent to a structure includes establishing at least three base station sites at known locations around the structure. The system signals the driver’s intention to turn left, move forward or turn right by illuminating arrows within the cluster light. The first ground station is checked to determine whether the mobile platform’s public IP address is no longer present there. The adducts can be isolated via a simple and efficient process.