systems and methods for providing the crew of a vehicle with a potential collision alert . the alert is based on presumed flight - crew action and reaction times , ownship speed , and required distance to safely stop the ownship before intersection with traffic . an exemplary system located aboard an ownship includes a communication device that receives information from a ground traffic ; a memory device that stores ownship information and predefined constants ; and a processing device that determines a distance to the traffic when the traffic passes the ownship after the ownship stops at a estimated full - stop location , based on the received ownship information and the predefined constants , determines distance to the ground traffic vehicle , based on the determined point in time , and generates a potential collision alert if the determined distance is less than a predefined safe distance value . an exterior lighting device outputs a visual illumination after the potential collision alert is generated .