You might be right that Buangkok is closer to Hougang Ave 4, but
also the truth is a lot of people take 109 from Serangoon after
alighting from CCL and NEL to Hougang Ave 4/9. I have taken a WEG
6+pm from Serangoon Interchange and while it left interchange with
50-55 pax, along Boundary Rd and YCK Link, it picked up pax that
made more than 90 pax. And I was surprised to see 60-70 pax
alighted on stops along HG Ave 9 and HG Ave 4. When the bus came to
Buangkok Green, it was left with barely 30-35 pax, some of whom who
boarded along HG Ave 9/4.
So for me this SWT makes sense, else SBST would have to
introduce more DDs during that time from Serangoon to Changi (which
could be waste of resources since beyond Buangkok loading is very
low in PM).
BA, dd77, the typical SGrean tinking doesn make much sense...
rationally speaking ine would head to a train station closest to
their home rather than get caught in sgn ctrl jam n arrival timing
of 109A.
It's obvious i noe the direction fr SGN to HG is the load, m
givin an example... morning fr 4/9 to buangkok, if evening time
shld b fr Buangkok to ave4/9