The Straits Times' News In A Minute: Dec 30, 2015

In today's The Straits Times News in A Minute, we look at:

* The supply of Build-To-Order flats will increase to 18,000 units next year, 3,000 more than this year's. 

* A track fault near Jurong East MRT station caused a delay on the East-West Line for the second consecutive morning during rush hour. 

* Changi Airport has a new tracking system to ensure that there are always enough baggage trolleys for passengers.