Driverless technology has been emerging in the last five years.
Would driverless buses be on Singapore's roads in a decade's time?
Would all buses be electric to reduce emissions?
Currently, driverless electric vehicles are already being tested
in Singapore as a proof of concept:
http://www.straitstimes.com/news/singapore/transport/story/look-mum-no-hands-singapore-looks-driverless-vehicles-20140827
They are also being used in Italy, although the vehicle is
currently smaller than a normal citybus:
http://www.businessinsider.com/the-future-of-driverless-buses-2014-12
LTA is also studying them as a possible long-term plan (Smart
Mobility 2030 master plan):
http://transport.asiaone.com/news/general/story/lta-studying-driverless-vehicles-viable-mode-transport
http://www.todayonline.com/singapore/driverless-buses-talking-cars-smart-transport-master-plan
Wireless charging technology for electric buses would also aid
in making the process fully autonomous, akin to how driverless
trains operate now:
http://www.bbc.com/news/technology-23603751
In the United Kingdom, operators are also exploring the prospect
of operating them:
http://www.telegraph.co.uk/news/uknews/road-and-rail-transport/11180429/Driverless-buses-on-the-way.html
Would that help solve the shortage of drivers, by doing away
with them altogether?
I'd say the government thought of another rather different
approach to replace large use of buses here in sg and that is the
construction of the various automated medium capacity rail
lines.
The circle line, downtown line, and thomson-marine parade line
replaces or will replace some of the corridors that have rather
heavy bus usage, by providing stops that are within walking
distance and with stable frequency unlike buses.
Doing so helps to stablise the frequency/headways as well as
removing some traffic off the roads, and hopefully in turn
providing a smoother and faster journey for the remaining bus
services which can help to reduce route-fleet sizes.
The only downsides are the cost.