Although public transit options are available, the main
method by which travelers get to and from the airport is by
taxi. However, like any mobility on demand system, there
are times where there are too many taxis and no passengers
and vice versa. When too many taxis wait at the airport,
it reduces the number of taxis available to service the rest
of the city and reduces the income of taxi drivers waiting in
queue because they could be more productively finding fares
elsewhere. When too few taxis are available, this results in
travelers having to wait in line for long periods of time.
Changi Airport has tried to address this problem by putting
up roadside electronic signboards just outside the airport
that show the number of flights arriving at each terminal