I also kenna the first warning at sentosa, they told me,
Uncle, 2nd time $130 + 6 pts hor, and one more time, ban your
vehicle, not you.
Sentosa and JI or any Island so to speak are run by their own
management, they decide on what to do, TP will then act on their
decision and guide them accordingly, because the roads are all run
by JTC for JI and sentosa management.
If they decide to fine them, they will inform TP with the cam, I
guess your friend had in a way, speed too much, way above the 50 or
70km/hr.