I got a way to solve the WAB sticker fuss
Put destos slot for WAB destos, when the bus is not on a WAB
swevice, the destos could not be put into the slot and taken off,
then there is not a need for redeployments as an excuse
That's what I suggested.
I guess for the wheelchair-accessible service deployment
problem, SBS Transit should consider putting a mini-placard (desto)
holder in front of accessible buses to hold an easily-removable
wheelchair-accessible logo, rather than using a sticker to display
it. When the bus is on an accessible route, the bus must display
the logo there; when deployed on a non-accessible route, the logo
must be removed to avoid any potential confusion.
This method should allow for more flexibility, and shouldn't
cost much to implement.
use EDS lah..
I briefly considered the possibility of that, until I realised
it's going to be a hassle to reprogram the LED displays - you got
to reprogram all the LED displays on all Scania K230UB buses, and
then do it all over again when a new accessible route comes
out.
And what about the Volvo B9TL buses that don't use LED display?
Junk existing plastic boards and print new ones when a route
becomes accesible?
VO3x/LO3x two LOW steps not good enough! 
I'm positive I have seen Volvo B9TL buses on route 99
before...
