Actually, there's few times where the driver let me take without
paying since it's just 5 stops to the terminal. That's when my
EZ-Link was negative and left with a $2 note. He told me it's
alright with a smile.
There's another time, because I didn't know that concession passes
now gives double beeps when it's negative as well so I happily
boarded the bus, went to the 2nd deck. Took till 1/2 way through
the journey and it dawned upon me that my card is already negative.
So I didn't pay for that journey.