Device, system and method for assisting the taxiing of an aircraft

In an aircraft including a cockpit, a unit for monitoring the situation of the aircraft and a radio communication unit, the device for aiding the ground rolling is configured to: acquire, from the monitoring unit, information the situation of the aircraft and determine predicted positions of the aircraft for a set of future instants, and for each vehicle of a set of other vehicles situated on the surface of the airport: acquire, from the radio communication unit, information regarding the situation of the vehicle, which information is transmitted by this vehicle, determine predicted positions of the vehicle and calculate a distance between the predicted position of the aircraft and the predicted position of the vehicle for each instant of the set of future instants and compare this distance with a predetermined distance threshold and, emit an alert in the cockpit if this distance is less than this distance threshold.