From his car language , he has that intention very earlier on ,
then he switched on the signal , then after a while switch it off ,
maybe when he glance back , behind too many cars to filter ,
and filther lane is coming up , has to made a quick decision .
Therefore road knowledge is important for both self and the
other driver. You can know why the other driver is edgy if you know
there is a turn ahead.
But on the signaling part. Sometime ago there was complaints
that Singapore drivers do not signal, they just drive without
signaling.
Things has improved slightly, they signal now, but signal for
themselves.
Yes, signal for themselves.
They signal to cover themselves, when asked did they
signal they can answer, looking innocently, "Yes". Signalling
after you have
begun changing lane, and only for three or four flashes is not
signalling your intention. It serves no other purpose. But this is
what I notice is the norm for car drivers nowadays.
Majority of TDs still signal their intention ahead. Those last
minute signalling and turning is usually because of a slight
emergency situation, that can understand.
The trend of Singapore drivers on signalling has developed into
the chiong and then signal. Maybe drivers can trust one
another and start to believe the other driver is not a rascal.
Beside this point, I notice there is now a slight improvement in
giving way to others.