What do u mean by perm stix
Perm stix is usually a white sticker with the service number on
it.
Sticker formats (new):
SV xxx - SV 168 for
example
SPARE - Spare
bus
Sticker formats (old):
xxx - 168 for example
SP - Spare bus
Depending on bus type/depot, the sticker can be anywhere, they
can either be spotted at the front near the door (especially on
BNDEP SDs), dashboard, coinbox, driver window area or upper deck
front (some BNDEP DDs).
Note that sometimes the perm stix can be subsituted by cut out
service guides (especially HGDEP buses), tape or sticker with the
perm service number written on it, or just simply a number written
on the front or dashboard (mostly on older buses).