Unwritten Rule #1

So the primary mode of transporation for us is a bus. Pretty much what you would expect in a city bus. Well not NY City bus, cause Singapore is much cleaner. Some are extra long w this crazy area in the middle where the two connect. The newer ones are double deckers! Noah loves to go upstairs to sit and see the city. Well he loves to go upstairs, I don't know about the seeing the city thing!
So the buses have two doors; very front (by the driver) and one half way back (the extra longs have a third door way in the back!) The other fact you need to know is that you can use cash to ride the bus but 95% of the people us an EZ Link card. It's the size of a credit card and you add a prepaid amount to them to pay for your rides thru town. At the doors there are readers for the cards. So you hold your card to a pad and it "reads" it and beeps to give you the ok when you enter and exit the bus.
Maybe our second day in Singapore and we are waiting for the bus. It pulls up and we happen to be at the back door. The doors open and we enter and try to get the pad to read our cards but they don't seen to want to work and then we notice the bus driver shouting at us and pointing to the front readers.
Unwritten Rule #1 - You must enter the bus at the driver and exit the bus at the rear. Can not simply enter or exit at whichever door is your convenience!
Ignorant Americans!