▁their ▁Pr esto ▁cards ▁there in , ▁unless ▁int ending ▁to ▁transfer ▁to ▁S TO ▁bus es . ▁ ▁Toronto ▁Trans it ▁Commission : ▁As ▁of ▁January ▁ 2 0 1 8 , ▁the ▁T TC ▁has ▁implemented ▁the ▁Pr esto ▁card ▁machines ▁at ▁all ▁ 7 5 ▁sub way ▁stations , ▁and ▁on - board ▁all ▁T TC ▁conventional ▁bus es ▁and ▁street c ars . ▁There ▁are ▁no ▁free ▁transfer ▁privileges ▁for ▁Pr esto ▁card ▁hold ers ▁when ▁transfer ring ▁to ▁or ▁from ▁other ▁neighbour ing ▁Pr esto - enabled ▁Gre ater ▁Toronto ▁Area ▁trans it ▁services , ▁meaning ▁a ▁full ▁fare ▁is ▁charged ▁when ▁transfer ring ▁between ▁these ▁ag encies ; ▁however , ▁Pr esto ▁card ▁users ▁transfer ring ▁between ▁T TC ▁and ▁GO ▁Trans it ▁or ▁Union ▁Pear son ▁Express ▁get ▁a ▁$ 1 . 5 0 ▁co - fare ▁disc ount ▁( or ▁$ 0 . 5 5 ▁for ▁sen iors / stud ents ). ▁Since ▁August ▁ 2 6 , ▁ 2 0 1 8 , ▁there ▁is ▁also ▁a ▁ 2 - hour ▁time - based ▁transfer ▁window ▁available ▁to ▁Pr esto ▁card ▁hold ers ▁who ▁pay ▁single ▁far es ▁using ▁their ▁stored ▁card ▁balance ; ▁with ▁this ▁transfer , ▁customers ▁are ▁entitled ▁to ▁un limited ▁travel ▁for ▁two ▁hours ▁across ▁the ▁T TC ▁network , ▁from ▁their ▁first ▁tap ▁of ▁the ▁Pr esto ▁card , ▁and ▁have ▁the ▁ability ▁to ▁enter ▁and ▁exit ▁any ▁T TC ▁vehicle ▁or ▁station ▁an ▁un limited ▁number ▁of ▁times