http://www.mynewsdesk.com/sg/smrt/pressreleases/smrt-double-deckers-to-begin-service-on-13-july-2014-1016455

"In the next 3 months, more Double Deckers will be progressively
introduced to 9 other bus services, following a series of road tests,
tree pruning and personnel training. These
are essential
services plying longer, heavily used routes, namely Bus Services
106, 188, 190, 850E,
951E, 960, 963, 966 and 969."
SBST has been running ADDs for 21 years.
And SMRT makes it seem like some huge-huge event.
Sure, I appreciate SMRT's move to take onboard DDs.
But there is really nothing to celebrate about being late by 2
decades if we look from this perspective.