It is all speculation. It is a left turn from one big road to
another, it is definitely not a sharp turn.
Also if there are trees on the turn, of course they can prune
the trees. They did it for Henderson Road just to ply 3 DDs on 176
first and then 3 DDs were introduced on 145.
Likewise they did tree pruning in many areas.
851 for them is just not priority and hence they have not done
anything and we are just speculating, it is the left turn.
From what I see from Google Map, it is the tree that is
obstructing it.. Svc 132 & 145 is turning right from Tiong
Bahru Road to Henderson Road have no issue as the tree isn't at its
way but as for Svc 851, the tree is quite near hence I believe it
is the root cause.
However, if Svc 851 wants to hv DDs, like mentioned, they can
prune the tree...