thanks users 42P 585L and 3163D!!
In any event, I should express my opinion that while over the
last 2 years, some of the buses from SMRT not spotted on service
are checked against records to be discovered laid up; it seems to
me that with the transfer of bus assets to LTA, SMRT may no longer
be able to apply for lay up since they were no longer the owners of
the buses that are not spotted on service. Therefore, it may be
harder to determine the whereabouts of the missing buses in more
cases than before. Correct me if I am wrong.