Now that you reminded me, Is there any chance that they are
trying to clear late starters from Toa Payoh or transferring the
ones starting from Boon Lay from BR?
If they(3227U 3228S(assuming)+ 8509Z and 8536U) are late
starters from Toa Payoh from 0620 onwards or so then I'm not
surprised because if they are starting late by the time the first
bus from Boon Lay would've arrived to lighten the load so no point
in keeping them at BR.
Another scenario is that the 4 transferred over starts at Boon
Lay starters from BR, and since travelling from BR would waste alot
of time then they might as well make the 4 go SL since it saves
time.
This is just my assumption not the real thing though.
oh. no idea though
i observe based on BC... saw 3228 on 157 just now. that BC who
drove this bus is from BR but there's one time he drove 8485, a SL
bus.
need to double confirm again on what else he drive. if he drive
other SL bus, then can confirm 3228 as SL bus
as for BRBP DD that appear quite frequent every weekends, it
started few months back. the DD that appeared was 3227 &
3228