TIB661A has been a 961 perm until the Mercedes-Benz buses from
960 and 969 came to 961.
TIB968R is now perm 961.
TIB959S, I consider that bus a SP.
SMRT Buses deployment is VERY volatile. So don't
be surprised if anything changes and it takes time to know.
960 - only 522T,573X,576M went over (in that move which
saw 566S,568L,571B out.)
969 - 967T and 971E (Effectively saw 661A out, and one
extra bus in.)
From what I observe though, from Woodlands side it is always 960
and 961 that likes to have their deployments changed every quarter
or 2 though, But I can't guarantee how often AM/KJ do change their
deployments though.
The OCs has already replaced the scanias on 961 the day it came
to WLDEP.
By the way, 661A may be going to 178 though, but have to
observe.
So far, 169,963,965,966's deployment don't really have much
changes though, but 960 and 961 likes to have their deployments
done every 2 to 3 Q though