I haven't been to Singapore in a couple of years now but I'd guess
that any bike share plan would not be an amazing spectacular for a
couple of reasons. The locals that use bikes for local transportation
will, of course, all have their own bike and the MRT (subway) stations
in the outlying areas, were the bulk of the housing is, already have
bike parking facilities. At one, the Lavender Street Station, there
will be easily 100+ bikes parked there during business hours.
For tourists the public transportation system, buses and subways are
generally all that is required and if a place is just a little out of
the way there are a lot of taxies and are not, in European or U.S.
terms, expensive.
They have a bike sharing scheme in Bangkok but I have never seen
anyone use it.
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Cheers,
John B.