I believe that services 100, 105, 109 and 317 will go WAB once
the new Serangoon interchange opens. Currently service 109 is the
only service at Changi Village that haven't declare WAB yet.
Service 70/70M should also get WAB too. Similar to 109 at Changi
Village, 70/70M is the only YCK service yet to become WAB. I
believe that they shouldn't be an issue as majority of its routes
do have alongside with services 7, 14, 43, 76, 86 and 196 that have
already been declared WAB.
Sengkang side services 156 and 163 should also be declared WAB
too. Services 119/156/163 were the earliest services in Sengkang to
receive its K230UB perms from HGDEP and till now none of these
services had been declared WAB yet.
Next one that I will think of is service 138. Now with service
138 being upgraded to Citaro fleets, can declare WAB already.
Furthermore service 194 that goes to Jurong Birdpark has been
declared WAB, Singapore Zoological Gardens and Night Safari should
follow suit too.
73 should be the one getting too since it got full KUB fleet but
yet to declare WAB.
Cheers.