The main contributions of this paper are:
• data mining algorithms to find the average waiting time,
arrival rate, departure rate and queue length of taxis
waiting at any given terminal,
• a first study on quantifying the imbalance of taxi supply
at terminals of airports,
• a queuing model and an automated planning system that
can be used to send taxis to an airport terminal when
demand is high, and
• lastly, a direct comparison between simulated taxi and
passenger waiting times in the current system versus
one that uses ChangiNOW