Istanbul Card: You can use Istanbul Card for all public transportations. When you transfer from one vehicle to another, its discounted. You can use 1 card for multiple person, but discount will be for just 1 person. You can find Istanbul card in our main office for 20 Lira. (14 Lira loaded inside + 6 Lira card deposit) You can recharge in the metro stations, or nearby kiosks. But do not load more than you can use, because only the 6 Lira card deposit is refundable