The Bratislava CARD is the integrated transport system (IDS BK) ticket allowing unlimited travel in all zones (city & region) on trams, trolleybuses and buses (lines 1 – 799), night buses N21 to N99 and on the trains (lines S). The ticekt is non-transferable and valid for 24, 48 or 72 hours from the indicated date and time. In case of a ticket inspection please show the card along with your ID.