I would say 172 could take in more bendies. For 172 loading,
most of the crowds at peak hours come from the SCDF/Tengah
Airbase/Keat Hong Camp. All these people usually carry very big
bags and I doubt they will go up. And the people that board earlier
on in the route, they are more likely to stay dowstairs since there
is space. Also, between CCK int and CCK Ave 1, the travel time is
very short and people boarding 172 in these areas will not go up.
It would be better to let 180 take in DDs and the Bendies go over
to 172.
Overall SMRT Trunk services that should definitely use DD (IMO):
106, 180, 188, 190, 700, 857, 960, 963, 965, 966, 969, 972, 985
SMRT Trunks that could use Bendies: 67, 172, 176, 187, 189, 851,
854, 856, 962, 964
Agreed..
180 should get DDs..most of their pax alights only at
BPJ.
Prob. 855 can try having BSEP DDs..