An apparatus comprising a transceiver module and a processor. The transceiver may be configured to send/receive data messages to/from a plurality of vehicles. The processor may be configured to (i) determine a plurality of selected vehicles from the plurality of vehicles based on a selection criteria and (ii) calculate relative coordinates of the plurality of vehicles based on the data messages from the selected vehicles. The selection criteria may comprise determining (i) a target vehicle and (ii) at least two complementary vehicles. A predicted trajectory of the target vehicle may cross paths with a predicted trajectory of the apparatus. The complementary vehicles may be selected based on (i) an arrangement of the plurality of vehicles and (ii) speeds of the plurality of vehicles.
展开▼