When I saw that photo, the first, last, and only number that
came to my mind was:
858
And it was no surprise that it was. SMRT is renowned for extreme
corner cutting so that they can get more money for their big fat
pockets 
.
Personally, whenever I want to wait for a route 858 bus at Changi
Airport, countless route 24, 27, 34, 36, and 53 buses could have
came and went. Sometimes, I actually take 27 or 34 to
Tampines/Sengkang/Punggol to switch to another bus to the north,
and the wait is usually, if not always shorter. The only one time
when I waited for a long time for an SBS Transit bus route there
was for route 36, and even then, it was affected by the National
Day Parade (if I remember correctly).
