On 31 October 2012, LTA announced that by 2016, Sengkang and Punggol LRT systems will be upgraded to a two-car system for 16 of the 41 existing train cars, allowing double the number of passengers to board at any one time. Each train car can take up to 105 passengers. 16 more train-cars will also be procured. This will bring the total fleet size to 57 train-cars. Hence, there is also the need to modify the signalling and communication system.