Some changes to Sv 857's x-over trips.
SMB226B
(WL 857)
(WL
857/857A)
Replaces 229T's x-over trip to Sv 857A during Weekdays AM Peak.
This change has been going on for 3.5 weeks
already.
SMB227Z
(WL 857)
(WL
857/811E)
Going on for about 2 weeks
alr. 227Z reaches Yishun Int with full Sv 811E details & pax at
0720hrs+ on Weekdays AM Peak, before going to park at Sv 857's
berth and starting Sv 857 some 15+ mins later.
Wiki states current Sv 857/811E slot is done by 155Y (AM 857 side),
but I need to check again if they added 1 more 857/811E slot (for
227Z from WL 857 side), or they switched depots for the 857/811E
x-over.
My gut feeling is they added 1 more 857/811E slot, because IIRC
155Y doesn't start Sv 857 that late during AM Peak after finishing
Sv 811E.