I guess it's for safety reasons.
actually, since SBS Transit has so many Double Decker buses, why
not deploy one Double Decker on the premium services? Anyway, only
run around two times a day only... so, why not?
It is call premium bus because, u pay extra to guarantee
seatings... also part of regulation from LTA as well. the perm bus
is 2611 which is deregistering tomorrow (and guess it broke down)
and there isnt any more spare MK4 available in BRBP/AMDEP.. so they
have no choice but to use a replacement KUB.. and since it is a
replacement bus, the OCC should allow the passengers to stand if
the passengers agreed..
Most likely today a DD will be deployed and some inspectors will
follow the bus to apologize and give complimentary ticket.