(PHOTOS DO NOT BELONG TO
ME. COPYRIGHT REMAINS WITH THE ORIGINAL CREATORS OF THE PHOTOGRAPHS
AS STATED IN THE PHOTO'S WATERMARK, FULL CREDIT FOR THE PHOTOGRAPHS
BELONG TO THEM)
Seems like there are quite a few differences between SMRT's
production Citaro buses and SBS Transit's Citaro buses, besides the
few obvious ones (different LED displays, etc.).

I guess all of you have been wondering whr is the door button
located at for SBST Citaro. SMRT Door button as you can see is at
the white part just on top of the headlight area. SBST is clever
enough to hide it behind the left wing wiper arm area whr the
bottom black part of the windscreen is that made a camouflouge of
the button and moreover that its quite flat also. i just found out
when i boarded SBS 6000L on 28 just now at Toa Payoh Int whr i saw
the driver sort of like press something at the back of the left
wiper then toe door opens.