The present invention relates to a method and apparatus for reducing the number of packets in a vehicle-to-vehicle multi-hop broadcast communication. The method determines a position data comprising a position, a velocity and a direction of a receiving vehicle (1, 2, 3, 4), receives a position data comprising position, velocity and direction from sending vehicles (1, 2, 3, 4), and calculates a relative position between the receiving vehicle (1, 2, 3, 4) and the sending vehicle (1, 2, 3, 4). Next, a density of vehicles is calculated from the calculated relative positions. The position data of the receiving vehicle (1, 2, 3, 4) is periodically sent, and the time for periodically sending the position data of the receiving vehicle (1, 2, 3, 4) is set in accordance with the calculated density of vehicles.