A optional feature on the #A320 is the Airborne Traffic Situational Awareness (ATSAW). 

It shows other surrounding traffic on the pilot’s display (ND) &amp; provides additional information including each aircraft’s identification, as well as the direction in which it is heading 

Thanks to ADS-B in, ATSAW provides more information, giving traffic information upto 150NM (current 40-80NM) while also providing information on the intruder’s direction of travel.

FunFact : It can display upto 90 aircraft’s at the same time. 

Traffic Selector