Quote from http://www.sgforums.com/forums/1279/topics/332950?page=14
Can tell by noticing how many old Nissan UDs are being "dumped"
on a particular route. Services 178, 187, 853, 975 are among the
main victims.
Whereas some services like service 851 - always the 1st to get
new buses in Tibs/SMRT's fleet, from Merc 0405 way back in 1994 all
the way till now with Merc OC500LE fleets. Still remember the NAC
ELBO Scanias which also made the 1st appearance on service 851 in
1996, now thees ELBOs are in a very bad conditon and were so called
"dumped" to services like 187 and 852.
For OAC Nissan UDs, most of them started off with service 854.
After which Merc buses were bought in 1-2 years later, service
854's AC fleets were replaced with Mercs. All the Nissan UDs were
then assigned to those other not so profitable routes when they
were converted to PAC in the later phase in 1995, eg. service 160,
182, 925.
Anyone remembers the fleet changes that sv.854 underwent since the
OAC UDs were replaced with O405s somewhere in 1994-1995?