I don't think 123 will be able to use DD south of Sentosa, even
though if they use DD, might as well terminate at Resorts World
Sentosa Terminus only ma. The rule is simple, the streetcar bridge
is 4.3 metres in height. Our double decker is 4.4 metres in
height.
Same as JB Checkpoint/Woodlands Checkpoint.
Might as well say, have a special service called 123A (Bukit
Merah - Resorts World Sentosa via Orchard Rd) for double deckers.
Like Joo Koon/Tuas Link case scenario.
Stuck doesnt mean height restrictions but more to traffic
jams