TOareaFan
Superstar
They should not tap off at Union. The card emulates how tickets work. You buy a ticket to the final destination, not interim transfer points.
GO has a minimum fare per trip. If you tap off and then on again at Union it will charge the minimum fare again. You are not supposed to be charged this just for transferring.
Now you can get into trouble if all this takes longer than the 2 hour trip window (I think it's actually 2 hours 15 minutes now).
You have to tap off before the trip window ends or the card locks out. If they get to Union and just miss a train, then wait an hour for the next one, they might not get to the EX in time. Also make sure they don't tap on until a few minutes before the train comes. You don't want to use up the trip time before you even get on the train.
Thanks...that makes sense...although, as you point out, it is a bit tight .....but doable.....I was thinking they would get the 9:20 from Bramlea (arriving at Union at 9:58) then the next train to the Ex (10:41) ....if everything works that arrives at 10:43...so about 37 minutes to spare...problem is that if they miss that 10:41..the next train is at 11:41 so a delayed Bramalea train or a confused teenagers could easily blow that!
Good to know, though, that the system has been designed to allow the free transfer to the Ex.